Document:

Exhibit 4.46

 

SERIES O PREFUNDED COMMON STOCK PURCHASE
WARRANT

 

NEURALSTEM, INC.

 

	Warrant Shares: _________	Initial Exercise Date: __________,
2019

 

THIS SERIES O PREFUNDED
COMMON STOCK PURCHASE WARRANT (the “Warrant”) certifies that, for value received, _________ or its assigns (the
“Holder”) is entitled, upon the terms and subject to the limitations on exercise and the conditions hereinafter
set forth, at any time on or after the date hereof (the “Initial Exercise Date”) and until this Warrant is exercised
in full (the “Termination Date”) but not thereafter, to subscribe for and purchase from Neuralstem, Inc., a
Delaware corporation (the “Company”), up to ______ shares (as subject to adjustment hereunder, the “Warrant
Shares”) of Common Stock. The purchase price of one share of Common Stock under this Warrant shall be equal to the Exercise
Price, as defined in Section 2(b).

 

Section 1.        Definitions.
In addition to the terms defined elsewhere in this Warrant, the following terms have the meanings indicated in this Section 1:

 

“Affiliate”
means any Person that, directly or indirectly through one or more intermediaries, controls or is controlled by or is under common
control with a Person, as such terms are used in and construed under Rule 405 under the Securities Act.

 

“Bid
Price” means, for any date, the price determined by the first of the following clauses that applies: (a) if the Common
Stock is then listed or quoted on a Trading Market, the bid price of the Common Stock for the time in question (or the nearest
preceding date) on the Trading Market on which the Common Stock is then listed or quoted as reported by Bloomberg L.P. (based on
a Trading Day from 9:30 a.m. (New York City time) to 4:02 p.m. (New York City time)), (b)  if OTCQB or OTCQX is not a Trading
Market, the volume weighted average price of the Common Stock for such date (or the nearest preceding date) on OTCQB or OTCQX as
applicable, (c) if the Common Stock is not then listed or quoted for trading on OTCQB or OTCQX and if prices for the Common Stock
are then reported in the “Pink Sheets” published by OTC Markets Group, Inc. (or a similar organization or agency succeeding
to its functions of reporting prices), the most recent bid price per share of the Common Stock so reported, or (d) in all
other cases, the fair market value of a share of Common Stock as determined by an independent appraiser selected in good faith
by the Holders of a majority in interest of the Warrants then outstanding and reasonably acceptable to the Company, the fees and
expenses of which shall be paid by the Company.

 

“Board
of Directors” means the board of directors of the Company.

 

“Business
Day” means any day except any Saturday, any Sunday, any day which is a federal legal holiday in the United States or
any day on which banking institutions in the State of New York are authorized or required by law or other governmental action to
close.

 

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“Commission”
means the United States Securities and Exchange Commission.

 

“Common
Stock” means the common stock of the Company, par value $0.01 per share, and any other class of securities into which
such securities may hereafter be reclassified or changed.

 

“Common
Stock Equivalents” means any securities of the Company or the Subsidiaries which would entitle the holder thereof to
acquire at any time Common Stock, including, without limitation, any debt, preferred stock, right, option, warrant or other instrument
that is at any time convertible into or exercisable or exchangeable for, or otherwise entitles the holder thereof to receive, Common
Stock.

 

“Exchange
Act” means the Securities Exchange Act of 1934, as amended, and the rules and regulations promulgated thereunder.

 

“Person”
means an individual or corporation, partnership, trust, incorporated or unincorporated association, joint venture, limited liability
company, joint stock company, government (or an agency or subdivision thereof) or other entity of any kind.

 

“Registration
Statement” means the Company’s registration statement on Form S-1 (File No. 333-232273).

 

“Securities
Act” means the Securities Act of 1933, as amended, and the rules and regulations promulgated thereunder.

 

“Subsidiary”
means any subsidiary of the Company and shall, where applicable, also include any direct or indirect subsidiary of the Company
formed or acquired after the date hereof.

 

“Trading
Day” means a day on which the Common Stock is traded on a Trading Market.

 

“Trading
Market” means any of the following markets or exchanges on which the Common Stock is listed or quoted for trading on
the date in question: the NYSE American, the Nasdaq Capital Market, the Nasdaq Global Market, the Nasdaq Global Select Market,
or the New York Stock Exchange (or any successors to any of the foregoing).

 

“Transfer
Agent” means American Stock Transfer & Trust Company, LLC, the current transfer agent of the Company, with a mailing
address of: Customer Service 6201 15th Avenue Brooklyn, NY 11219 and a facsimile number of 718-236-264, and any successor transfer
agent of the Company.

 

“Underwriting
Agreement” means the underwriting agreement, dated as of July __, 2019 among the Company and H.C. Wainwright & Co.,
LLC as representative of the underwriters named therein, as amended, modified or supplemented from time to time in accordance with
its terms.

 

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“VWAP”
means, for any date, the price determined by the first of the following clauses that applies: (a) if the Common Stock is then listed
or quoted on a Trading Market, the daily volume weighted average price of the Common Stock for such date (or the nearest preceding
date) on the Trading Market on which the Common Stock is then listed or quoted as reported by Bloomberg L.P. (based on a Trading
Day from 9:30 a.m. (New York City time) to 4:02 p.m. (New York City time)), (b)  if OTCQB or OTCQX is not a Trading Market,
the volume weighted average price of the Common Stock for such date (or the nearest preceding date) on OTCQB or OTCQX as applicable,
(c) if the Common Stock is not then listed or quoted for trading on OTCQB or OTCQX and if prices for the Common Stock are then
reported in the “Pink Sheets” published by OTC Markets Group, Inc. (or a similar organization or agency succeeding
to its functions of reporting prices), the most recent bid price per share of the Common Stock so reported, or (d) in all
other cases, the fair market value of a share of Common Stock as determined by an independent appraiser selected in good faith
by the holders of a majority in interest of the Warrants then outstanding and reasonably acceptable to the Company, the fees and
expenses of which shall be paid by the Company.

 

“Warrants”
means this Warrant and other Series O Prefunded Common Stock purchase warrants issued by the Company pursuant to the Registration
Statement.

 

Section 2.       Exercise.

 

a)             
Exercise of Warrant. Exercise of the purchase rights represented by this Warrant may be made, in whole or in part,
at any time or times on or after the Initial Exercise Date and on or before the Termination Date by delivery to the Company of
a duly executed facsimile copy or PDF copy submitted by e-mail (or e-mail attachment) of the Notice of Exercise in the form annexed
hereto (the “Notice of Exercise”). Within the earlier of (i) two (2) Trading Days and (ii) the number of Trading
Days comprising the Standard Settlement Period (as defined in Section 2(d)(i) herein) following the date of exercise as aforesaid,
the Holder shall deliver the aggregate Exercise Price for the shares specified in the applicable Notice of Exercise by wire transfer
or cashier’s check drawn on a United States bank unless the cashless exercise procedure specified in Section 2(c) below is
specified in the applicable Notice of Exercise. No ink-original Notice of Exercise shall be required, nor shall any medallion guarantee
(or other type of guarantee or notarization) of any Notice of Exercise be required. Notwithstanding anything herein to the contrary,
the Holder shall not be required to physically surrender this Warrant to the Company until the Holder has purchased all of the
Warrant Shares available hereunder and the Warrant has been exercised in full, in which case, the Holder shall surrender this Warrant
to the Company for cancellation within three (3) Trading Days of the date on which the final Notice of Exercise is delivered to
the Company. Partial exercises of this Warrant resulting in purchases of a portion of the total number of Warrant Shares available
hereunder shall have the effect of lowering the outstanding number of Warrant Shares purchasable hereunder in an amount equal to
the applicable number of Warrant Shares purchased. The Holder and the Company shall maintain records showing the number of Warrant
Shares purchased and the date of such purchases. The Company shall deliver any objection to any Notice of Exercise within one (1)
Business Day of receipt of such notice. The Holder and any assignee, by acceptance of this Warrant, acknowledge and agree that,
by reason of the provisions of this paragraph, following the purchase of a portion of the Warrant Shares hereunder, the number
of Warrant Shares available for purchase hereunder at any given time may be less than the amount stated on the face hereof.

 

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b)            
Exercise Price. The aggregate exercise price of this Warrant, except for a nominal exercise price of $0.0001 per
Warrant Share, was pre-funded to the Company on or prior to the Initial Exercise Date and, consequently, no additional consideration
(other than the nominal exercise price of $0.0001 per Warrant Share) shall be required to be paid by the Holder to any Person to
effect any exercise of this Warrant. The Holder shall not be entitled to the return or refund of all, or any portion, of such pre-paid
aggregate exercise price under any circumstance or for any reason whatsoever, including in the event this Warrant shall not have
been exercised prior to the Termination Date. The remaining unpaid exercise price per share of Common Stock under this Warrant
shall be $0.0001, subject to adjustment hereunder (the “Exercise Price”).

 

c)             
Cashless Exercise. This Warrant may also be exercised, in whole or in part, at such time by means of a “cashless
exercise” in which the Holder shall be entitled to receive a number of Warrant Shares equal to the quotient obtained by dividing
[(A-B) (X)] by (A), where:

 

(A) = as applicable:
(i) the VWAP on the Trading Day immediately preceding the date of the applicable Notice of Exercise if such Notice of Exercise
is (1) both executed and delivered pursuant to Section 2(a) hereof on a day that is not a Trading Day or (2) both executed and
delivered pursuant to Section 2(a) hereof on a Trading Day prior to the opening of “regular trading hours” (as defined
in Rule 600(b)(64) of Regulation NMS promulgated under the federal securities laws) on such Trading Day, (ii) at the option of
the Holder, either (y) the VWAP on the Trading Day immediately preceding the date of the applicable Notice of Exercise or (z) the
Bid Price of the Common Stock on the principal Trading Market as reported by Bloomberg L.P. as of the time of the Holder’s
execution of the applicable Notice of Exercise if such Notice of Exercise is executed during “regular trading hours”
on a Trading Day and is delivered within two (2) hours thereafter (including until two (2) hours after the close of “regular
trading hours” on a Trading Day) pursuant to Section 2(a) hereof or (iii) the VWAP on the date of the applicable Notice of
Exercise if the date of such Notice of Exercise is a Trading Day and such Notice of Exercise is both executed and delivered pursuant
to Section 2(a) hereof after the close of “regular trading hours” on such Trading Day;

 

(B) = the
Exercise Price of this Warrant, as adjusted hereunder; and

 

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(X) =
the number of Warrant Shares that would be issuable upon exercise of this Warrant in accordance with the terms of this Warrant
if such exercise were by means of a cash exercise rather than a cashless exercise.

 

If Warrant
Shares are issued in such a cashless exercise, the parties acknowledge and agree that in accordance with Section 3(a)(9) of the
Securities Act, the Warrant Shares shall take on the registered characteristics of the Warrants being exercised. The Company agrees
not to take any position contrary to this Section 2(c).

 

d)            
Mechanics of Exercise.

 

		i.	Delivery of Warrant Shares Upon Exercise. The Company shall cause the Warrant Shares purchased
hereunder to be transmitted by the Transfer Agent to the Holder by crediting the account of the Holder’s or its designee’s
balance account with The Depository Trust Company through its Deposit or Withdrawal at Custodian system (“DWAC”)
if the Company is then a participant in such system and either (A) there is an effective registration statement permitting the
issuance of the Warrant Shares to or resale of the Warrant Shares by Holder or (B) this Warrant is being exercised via cashless
exercise, and otherwise by physical delivery of a certificate, registered in the Company’s share register in the name of
the Holder or its designee, for the number of Warrant Shares to which the Holder is entitled pursuant to such exercise to the address
specified by the Holder in the Notice of Exercise by the date that is the earliest of (i) two (2) Trading Days after the delivery
to the Company of the Notice of Exercise, (ii) one (1) Trading Day after delivery of the aggregate Exercise Price to the Company
and (iii) the number of Trading Days comprising the Standard Settlement Period after the delivery to the Company of the Notice
of Exercise (such date, the “Warrant Share Delivery Date”). Upon delivery of the Notice of Exercise, the Holder
shall be deemed for all corporate purposes to have become the holder of record of the Warrant Shares with respect to which this
Warrant has been exercised, irrespective of the date of delivery of the Warrant Shares, provided that payment of the aggregate
Exercise Price (other than in the case of a cashless exercise) is received within the earlier of (i) two (2) Trading Days and (ii)
the number of Trading Days comprising the Standard Settlement Period following delivery of the Notice of Exercise. If the Company
fails for any reason to deliver to the Holder the Warrant Shares subject to a Notice of Exercise by the Warrant Share Delivery
Date, the Company shall pay to the Holder, in cash, as liquidated damages and not as a penalty, for each $1,000 of Warrant Shares
subject to such exercise (based on the VWAP of the Common Stock on the date of the applicable Notice of Exercise), $10 per Trading
Day (increasing to $20 per Trading Day on the fifth Trading Day after such liquidated damages begin to accrue) for each Trading
Day after such Warrant Share Delivery Date until such Warrant Shares are delivered or Holder rescinds such exercise. The Company
agrees to maintain a transfer agent that is a participant in the FAST program so long as this Warrant remains outstanding and exercisable.
As used herein, “Standard Settlement Period” means the standard settlement period, expressed in a number of
Trading Days, on the Company’s primary Trading Market with respect to the Common Stock as in effect on the date of delivery
of the Notice of Exercise. Notwithstanding the foregoing, with respect to any Notice(s) of Exercise delivered on or prior to 12:00
p.m. (New York City time) on the Initial Exercise Date, which may be delivered at any time after the time of execution of the Underwriting
Agreement, the Company agrees to deliver the Warrant Shares subject to such notice(s) by 4:00 p.m. (New York City time) on the
Initial Exercise Date and the Initial Exercise Date shall be the Warrant Share Delivery Date for purposes hereunder.

 

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ii.        
Delivery of New Warrants Upon Exercise. If this Warrant shall have been exercised in part, the Company shall, at
the request of a Holder and upon surrender of this Warrant certificate, at the time of delivery of the Warrant Shares, deliver
to the Holder a new Warrant evidencing the rights of the Holder to purchase the unpurchased Warrant Shares called for by this Warrant,
which new Warrant shall in all other respects be identical with this Warrant.

 

iii.        
Rescission Rights. If the Company fails to cause the Transfer Agent to transmit to the Holder the Warrant Shares
pursuant to Section 2(d)(i) by the Warrant Share Delivery Date, then the Holder will have the right to rescind such exercise.

 

iv.        
Compensation for Buy-In on Failure to Timely Deliver Warrant Shares Upon Exercise. In addition to any other rights
available to the Holder, if the Company fails to cause the Transfer Agent to transmit to the Holder the Warrant Shares in accordance
with the provisions of Section 2(d)(i) above pursuant to an exercise on or before the Warrant Share Delivery Date, and if after
such date the Holder is required by its broker to purchase (in an open market transaction or otherwise) or the Holder’s brokerage
firm otherwise purchases, shares of Common Stock to deliver in satisfaction of a sale by the Holder of the Warrant Shares which
the Holder anticipated receiving upon such exercise (a “Buy-In”), then the Company shall (A) pay in cash to
the Holder the amount, if any, by which (x) the Holder’s total purchase price (including brokerage commissions, if any) for
the shares of Common Stock so purchased exceeds (y) the amount obtained by multiplying (1) the number of Warrant Shares that the
Company was required to deliver to the Holder in connection with the exercise at issue times (2) the price at which the sell order
giving rise to such purchase obligation was executed, and (B) at the option of the Holder, either reinstate the portion of the
Warrant and equivalent number of Warrant Shares for which such exercise was not honored (in which case such exercise shall be deemed
rescinded) or deliver to the Holder the number of shares of Common Stock that would have been issued had the Company timely complied
with its exercise and delivery obligations hereunder. For example, if the Holder purchases Common Stock having a total purchase
price of $11,000 to cover a Buy-In with respect to an attempted exercise of shares of Common Stock with an aggregate sale price
giving rise to such purchase obligation of $10,000, under clause (A) of the immediately preceding sentence the Company shall be
required to pay the Holder $1,000. The Holder shall provide the Company written notice indicating the amounts payable to the Holder
in respect of the Buy-In and, upon request of the Company, evidence of the amount of such loss. Nothing herein shall limit a Holder’s
right to pursue any other remedies available to it hereunder, at law or in equity including, without limitation, a decree of specific
performance and/or injunctive relief with respect to the Company’s failure to timely deliver shares of Common Stock upon
exercise of the Warrant as required pursuant to the terms hereof.

 

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v.        
No Fractional Shares or Scrip. No fractional shares or scrip representing fractional shares shall be issued upon
the exercise of this Warrant. As to any fraction of a share which the Holder would otherwise be entitled to purchase upon such
exercise, the Company shall, at its election, either pay a cash adjustment in respect of such final fraction in an amount equal
to such fraction multiplied by the Exercise Price or round up to the next whole share.

 

vi.        
Charges, Taxes and Expenses. Issuance of Warrant Shares shall be made without charge to the Holder for any issue
or transfer tax or other incidental expense in respect of the issuance of such Warrant Shares, all of which taxes and expenses
shall be paid by the Company, and such Warrant Shares shall be issued in the name of the Holder or in such name or names as may
be directed by the Holder; provided, however, that, in the event that Warrant Shares are to be issued in a name other
than the name of the Holder, this Warrant when surrendered for exercise shall be accompanied by the Assignment Form attached hereto
duly executed by the Holder and the Company may require, as a condition thereto, the payment of a sum sufficient to reimburse it
for any transfer tax incidental thereto. The Company shall pay all Transfer Agent fees required for same-day processing of any
Notice of Exercise and all fees to the Depository Trust Company (or another established clearing corporation performing similar
functions) required for same-day electronic delivery of the Warrant Shares.

 

vii.        
Closing of Books. The Company will not close its stockholder books or records in any manner which prevents the timely
exercise of this Warrant, pursuant to the terms hereof.

 

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e)             
Holder’s Exercise Limitations. The Company shall not effect any exercise of this Warrant, and a Holder shall
not have the right to exercise any portion of this Warrant, pursuant to Section 2 or otherwise, to the extent that after giving
effect to such issuance after exercise as set forth on the applicable Notice of Exercise, the Holder (together with the Holder’s
Affiliates, and any other Persons acting as a group together with the Holder or any of the Holder’s Affiliates (such Persons,
“Attribution Parties”)), would beneficially own in excess of the Beneficial Ownership Limitation (as defined
below).  For purposes of the foregoing sentence, the number of shares of Common Stock beneficially owned by the Holder and
its Affiliates and Attribution Parties shall include the number of shares of Common Stock issuable upon exercise of this Warrant
with respect to which such determination is being made, but shall exclude the number of shares of Common Stock which would be issuable
upon (i) exercise of the remaining, nonexercised portion of this Warrant beneficially owned by the Holder or any of its Affiliates
or Attribution Parties and (ii) exercise or conversion of the unexercised or nonconverted portion of any other securities of the
Company (including, without limitation, any other Common Stock Equivalents) subject to a limitation on conversion or exercise analogous
to the limitation contained herein beneficially owned by the Holder or any of its Affiliates or Attribution Parties.  Except
as set forth in the preceding sentence, for purposes of this Section 2(e), beneficial ownership shall be calculated in accordance
with Section 13(d) of the Exchange Act and the rules and regulations promulgated thereunder, it being acknowledged by the Holder
that the Company is not representing to the Holder that such calculation is in compliance with Section 13(d) of the Exchange Act
and the Holder is solely responsible for any schedules required to be filed in accordance therewith. To the extent that the limitation
contained in this Section 2(e) applies, the determination of whether this Warrant is exercisable (in relation to other securities
owned by the Holder together with any Affiliates and Attribution Parties) and of which portion of this Warrant is exercisable shall
be in the sole discretion of the Holder, and the submission of a Notice of Exercise shall be deemed to be the Holder’s determination
of whether this Warrant is exercisable (in relation to other securities owned by the Holder together with any Affiliates and Attribution
Parties) and of which portion of this Warrant is exercisable, in each case subject to the Beneficial Ownership Limitation, and
the Company shall have no obligation to verify or confirm the accuracy of such determination. In addition, a determination as to
any group status as contemplated above shall be determined in accordance with Section 13(d) of the Exchange Act and the rules and
regulations promulgated thereunder. For purposes of this Section 2(e), in determining the number of outstanding shares of Common
Stock, a Holder may rely on the number of outstanding shares of Common Stock as reflected in (A) the Company’s most recent
periodic or annual report filed with the Commission, as the case may be, (B) a more recent public announcement by the Company or
(C) a more recent written notice by the Company or the Transfer Agent setting forth the number of shares of Common Stock outstanding. 
Upon the written or oral request of a Holder, the Company shall within one Trading Day confirm orally and in writing to the Holder
the number of shares of Common Stock then outstanding.  In any case, the number of outstanding shares of Common Stock shall
be determined after giving effect to the conversion or exercise of securities of the Company, including this Warrant, by the Holder
or its Affiliates or Attribution Parties since the date as of which such number of outstanding shares of Common Stock was reported.
The “Beneficial Ownership Limitation” shall be 4.99% (or, upon election by a Holder prior to the issuance of
any Warrants, 9.99%) of the number of shares of the Common Stock outstanding immediately after giving effect to the issuance of
shares of Common Stock issuable upon exercise of this Warrant. The Holder, upon notice to the Company, may increase or decrease
the Beneficial Ownership Limitation provisions of this Section 2(e), provided that the Beneficial Ownership Limitation in no event
exceeds 9.99% of the number of shares of the Common Stock outstanding immediately after giving effect to the issuance of shares
of Common Stock upon exercise of this Warrant held by the Holder and the provisions of this Section 2(e) shall continue to apply.
Any increase in the Beneficial Ownership Limitation will not be effective until the 61st day after such notice is delivered
to the Company. The provisions of this paragraph shall be construed and implemented in a manner otherwise than in strict conformity
with the terms of this Section 2(e) to correct this paragraph (or any portion hereof) which may be defective or inconsistent with
the intended Beneficial Ownership Limitation herein contained or to make changes or supplements necessary or desirable to properly
give effect to such limitation. The limitations contained in this paragraph shall apply to a successor holder of this Warrant.

 

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Section 3.       Certain
Adjustments.

 

a)             
Stock Dividends and Splits. If the Company, at any time while this Warrant is outstanding: (i) pays a stock dividend
or otherwise makes a distribution or distributions on shares of its Common Stock or any other equity or equity equivalent securities
payable in shares of Common Stock (which, for avoidance of doubt, shall not include any shares of Common Stock issued by the Company
upon exercise of this Warrant), (ii) subdivides outstanding shares of Common Stock into a larger number of shares, (iii) combines
(including by way of reverse stock split) outstanding shares of Common Stock into a smaller number of shares, or (iv) issues by
reclassification of shares of the Common Stock any shares of capital stock of the Company, then in each case the Exercise Price
shall be multiplied by a fraction of which the numerator shall be the number of shares of Common Stock (excluding treasury shares,
if any) outstanding immediately before such event and of which the denominator shall be the number of shares of Common Stock outstanding
immediately after such event, and the number of shares issuable upon exercise of this Warrant shall be proportionately adjusted
such that the aggregate Exercise Price of this Warrant shall remain unchanged. Any adjustment made pursuant to this Section 3(a)
shall become effective immediately after the record date for the determination of stockholders entitled to receive such dividend
or distribution and shall become effective immediately after the effective date in the case of a subdivision, combination or re-classification.

 

b)            
[RESERVED]

 

c)             
Subsequent Rights Offerings. In addition to any adjustments pursuant to Section 3(a) above, if at any time the Company
grants, issues or sells any Common Stock Equivalents or rights to purchase stock, warrants, securities or other property pro rata
to the record holders of any class of shares of Common Stock (the “Purchase Rights”), then the Holder will be
entitled to acquire, upon the terms applicable to such Purchase Rights, the aggregate Purchase Rights which the Holder could have
acquired if the Holder had held the number of shares of Common Stock acquirable upon complete exercise of this Warrant (without
regard to any limitations on exercise hereof, including without limitation, the Beneficial Ownership Limitation) immediately before
the date on which a record is taken for the grant, issuance or sale of such Purchase Rights, or, if no such record is taken, the
date as of which the record holders of shares of Common Stock are to be determined for the grant, issue or sale of such Purchase
Rights (provided, however, that, to the extent that the Holder’s right to participate in any such Purchase Right would result
in the Holder exceeding the Beneficial Ownership Limitation, then the Holder shall not be entitled to participate in such Purchase
Right to such extent (or beneficial ownership of such shares of Common Stock as a result of such Purchase Right to such extent)
and such Purchase Right to such extent shall be held in abeyance for the Holder until such time, if ever, as its right thereto
would not result in the Holder exceeding the Beneficial Ownership Limitation).

 

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d)            
Pro Rata Distributions. During such time as this Warrant is outstanding, if the Company shall declare or make any
dividend or other distribution of its assets (or rights to acquire its assets) to holders of shares of Common Stock, by way of
return of capital or otherwise (including, without limitation, any distribution of cash, stock or other securities, property or
options by way of a dividend, spin off, reclassification, corporate rearrangement, scheme of arrangement or other similar transaction)
(a “Distribution”), at any time after the issuance of this Warrant, then, in each such case, the Holder shall
be entitled to participate in such Distribution to the same extent that the Holder would have participated therein if the Holder
had held the number of shares of Common Stock acquirable upon complete exercise of this Warrant (without regard to any limitations
on exercise hereof, including without limitation, the Beneficial Ownership Limitation) immediately before the date of which a record
is taken for such Distribution, or, if no such record is taken, the date as of which the record holders of shares of Common Stock
are to be determined for the participation in such Distribution (provided, however, that, to the extent that the
Holder's right to participate in any such Distribution would result in the Holder exceeding the Beneficial Ownership Limitation,
then the Holder shall not be entitled to participate in such Distribution to such extent (or in the beneficial ownership of any
shares of Common Stock as a result of such Distribution to such extent) and the portion of such Distribution shall be held in abeyance
for the benefit of the Holder until such time, if ever, as its right thereto would not result in the Holder exceeding the Beneficial
Ownership Limitation).

 

 

 

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e)             
Fundamental Transaction. If, at any time while this Warrant is outstanding, (i) the Company, directly or indirectly,
in one or more related transactions effects any merger or consolidation of the Company with or into another Person, (ii) the Company,
directly or indirectly, effects any sale, lease, license, assignment, transfer, conveyance or other disposition of all or substantially
all of its assets in one or a series of related transactions, (iii) any, direct or indirect, purchase offer, tender offer or exchange
offer (whether by the Company or another Person) is completed pursuant to which holders of Common Stock are permitted to sell,
tender or exchange their shares for other securities, cash or property and has been accepted by the holders of 50% or more of the
outstanding Common Stock, (iv) the Company, directly or indirectly, in one or more related transactions effects any reclassification,
reorganization or recapitalization of the Common Stock or any compulsory share exchange pursuant to which the Common Stock is effectively
converted into or exchanged for other securities, cash or property, or (v) the Company, directly or indirectly, in one or more
related transactions consummates a stock or share purchase agreement or other business combination (including, without limitation,
a reorganization, recapitalization, spin-off, merger or scheme of arrangement) with another Person or group of Persons whereby
such other Person or group acquires more than 50% of the outstanding shares of Common Stock (not including any shares of Common
Stock held by the other Person or other Persons making or party to, or associated or affiliated with the other Persons making or
party to, such stock or share purchase agreement or other business combination) (each a “Fundamental Transaction”),
then, upon any subsequent exercise of this Warrant, the Holder shall have the right to receive, for each Warrant Share that would
have been issuable upon such exercise immediately prior to the occurrence of such Fundamental Transaction, at the option of the
Holder (without regard to any limitation in Section 2(e) on the exercise of this Warrant), the number of shares of Common Stock
of the successor or acquiring corporation or of the Company, if it is the surviving corporation, and any additional consideration
(the “Alternate Consideration”) receivable as a result of such Fundamental Transaction by a holder of the number
of shares of Common Stock for which this Warrant is exercisable immediately prior to such Fundamental Transaction (without regard
to any limitation in Section 2(e) on the exercise of this Warrant). For purposes of any such exercise, the determination of the
Exercise Price shall be appropriately adjusted to apply to such Alternate Consideration based on the amount of Alternate Consideration
issuable in respect of one share of Common Stock in such Fundamental Transaction, and the Company shall apportion the Exercise
Price among the Alternate Consideration in a reasonable manner reflecting the relative value of any different components of the
Alternate Consideration. If holders of Common Stock are given any choice as to the securities, cash or property to be received
in a Fundamental Transaction, then the Holder shall be given the same choice as to the Alternate Consideration it receives upon
any exercise of this Warrant following such Fundamental Transaction. The Company shall cause any successor entity in a Fundamental
Transaction in which the Company is not the survivor (the “Successor Entity”) to assume in writing all of the
obligations of the Company under this Warrant in accordance with the provisions of this Section 3(e) pursuant to written agreements
in form and substance reasonably satisfactory to the Holder and approved by the Holder (without unreasonable delay) prior to such
Fundamental Transaction and shall, at the option of the Holder, deliver to the Holder in exchange for this Warrant a security of
the Successor Entity evidenced by a written instrument substantially similar in form and substance to this Warrant which is exercisable
for a corresponding number of shares of capital stock of such Successor Entity (or its parent entity) equivalent to the shares
of Common Stock acquirable and receivable upon exercise of this Warrant (without regard to any limitations on the exercise of this
Warrant) prior to such Fundamental Transaction, and with an exercise price which applies the exercise price hereunder to such shares
of capital stock (but taking into account the relative value of the shares of Common Stock pursuant to such Fundamental Transaction
and the value of such shares of capital stock, such number of shares of capital stock and such exercise price being for the purpose
of protecting the economic value of this Warrant immediately prior to the consummation of such Fundamental Transaction), and which
is reasonably satisfactory in form and substance to the Holder. Upon the occurrence of any such Fundamental Transaction, the Successor
Entity shall succeed to, and be substituted for (so that from and after the date of such Fundamental Transaction, the provisions
of this Warrant referring to the “Company” shall refer instead to the Successor Entity), and may exercise every right
and power of the Company and shall assume all of the obligations of the Company under this Warrant with the same effect as if such
Successor Entity had been named as the Company herein.

 

    11

     

    

f)             
Calculations. All calculations under this Section 3 shall be made to the nearest cent or the nearest 1/100th of a
share, as the case may be. For purposes of this Section 3, the number of shares of Common Stock deemed to be issued and outstanding
as of a given date shall be the sum of the number of shares of Common Stock (excluding treasury shares, if any) issued and outstanding.

 

g)            
Notice to Holder.

 

i.        
Adjustment to Exercise Price. Whenever the Exercise Price is adjusted pursuant to any provision of this Section 3,
the Company shall promptly deliver to the Holder by facsimile or email a notice setting forth the Exercise Price after such adjustment
and any resulting adjustment to the number of Warrant Shares and setting forth a brief statement of the facts requiring such adjustment.

 

ii.        
Notice to Allow Exercise by Holder. If (A) the Company shall declare a dividend (or any other distribution in whatever
form) on the Common Stock, (B) the Company shall declare a special nonrecurring cash dividend on or a redemption of the Common
Stock, (C) the Company shall authorize the granting to all holders of the Common Stock rights or warrants to subscribe for or purchase
any shares of capital stock of any class or of any rights, (D) the approval of any stockholders of the Company shall be required
in connection with any reclassification of the Common Stock, any consolidation or merger to which the Company is a party, any sale
or transfer of all or substantially all of the assets of the Company, or any compulsory share exchange whereby the Common Stock
is converted into other securities, cash or property, or (E) the Company shall authorize the voluntary or involuntary dissolution,
liquidation or winding up of the affairs of the Company, then, in each case, the Company shall cause to be delivered by facsimile
or email to the Holder at its last facsimile number or email address as it shall appear upon the Warrant Register of the Company,
at least 20 calendar days prior to the applicable record or effective date hereinafter specified, a notice stating (x) the date
on which a record is to be taken for the purpose of such dividend, distribution, redemption, rights or warrants, or if a record
is not to be taken, the date as of which the holders of the Common Stock of record to be entitled to such dividend, distributions,
redemption, rights or warrants are to be determined or (y) the date on which such reclassification, consolidation, merger, sale,
transfer or share exchange is expected to become effective or close, and the date as of which it is expected that holders of the
Common Stock of record shall be entitled to exchange their shares of the Common Stock for securities, cash or other property deliverable
upon such reclassification, consolidation, merger, sale, transfer or share exchange; provided that the failure to deliver such
notice or any defect therein or in the delivery thereof shall not affect the validity of the corporate action required to be specified
in such notice. To the extent that any notice provided in this Warrant constitutes, or contains, material, non-public information
regarding the Company or any of the Subsidiaries, the Company shall simultaneously file such notice with the Commission pursuant
to a Current Report on Form 8-K. The Holder shall remain entitled to exercise this Warrant during the period commencing on the
date of such notice to the effective date of the event triggering such notice except as may otherwise be expressly set forth herein.

    12

     

    

 

Section 4.       Transfer
of Warrant.

 

a)             
Transferability. This Warrant and all rights hereunder (including, without limitation, any registration rights) are
transferable, in whole or in part, upon surrender of this Warrant at the principal office of the Company or its designated agent,
together with a written assignment of this Warrant substantially in the form attached hereto duly executed by the Holder or its
agent or attorney and funds sufficient to pay any transfer taxes payable upon the making of such transfer. Upon such surrender
and, if required, such payment, the Company shall execute and deliver a new Warrant or Warrants in the name of the assignee or
assignees, as applicable, and in the denomination or denominations specified in such instrument of assignment, and shall issue
to the assignor a new Warrant evidencing the portion of this Warrant not so assigned, and this Warrant shall promptly be cancelled.
Notwithstanding anything herein to the contrary, the Holder shall not be required to physically surrender this Warrant to the Company
unless the Holder has assigned this Warrant in full, in which case, the Holder shall surrender this Warrant to the Company within
three (3) Trading Days of the date on which the Holder delivers an assignment form to the Company assigning this Warrant in full.
The Warrant, if properly assigned in accordance herewith, may be exercised by a new holder for the purchase of Warrant Shares without
having a new Warrant issued.

 

b)            
New Warrants. This Warrant may be divided or combined with other Warrants upon presentation hereof at the aforesaid
office of the Company, together with a written notice specifying the names and denominations in which new Warrants are to be issued,
signed by the Holder or its agent or attorney. Subject to compliance with Section 4(a), as to any transfer which may be involved
in such division or combination, the Company shall execute and deliver a new Warrant or Warrants in exchange for the Warrant or
Warrants to be divided or combined in accordance with such notice. All Warrants issued on transfers or exchanges shall be dated
the initial issuance date of this Warrant and shall be identical with this Warrant except as to the number of Warrant Shares issuable
pursuant thereto.

 

c)             
Warrant Register. The Company shall register this Warrant, upon records to be maintained by the Company for that
purpose (the “Warrant Register”), in the name of the record Holder hereof from time to time. The Company may
deem and treat the registered Holder of this Warrant as the absolute owner hereof for the purpose of any exercise hereof or any
distribution to the Holder, and for all other purposes, absent actual notice to the contrary.

 

    13

     

    

Section 5.       Miscellaneous.

 

a)             
No Rights as Stockholder Until Exercise; No Settlement in Cash. This Warrant does not entitle the Holder to any voting
rights, dividends or other rights as a stockholder of the Company prior to the exercise hereof as set forth in Section 2(d)(i),
except as expressly set forth in Section 3. Without limiting any rights of a Holder to receive Warrant Shares on a “cashless
exercise” pursuant to Section 2(c) or to receive cash payments pursuant to Section 2(d)(i) and Section 2(d)(iv) herein, in
no event shall the Company be required to net cash settle an exercise of this Warrant.

 

b)            
Loss, Theft, Destruction or Mutilation of Warrant. The Company covenants that upon receipt by the Company of evidence
reasonably satisfactory to it of the loss, theft, destruction or mutilation of this Warrant or any stock certificate relating to
the Warrant Shares, and in case of loss, theft or destruction, of indemnity or security reasonably satisfactory to it (which, in
the case of the Warrant, shall not include the posting of any bond), and upon surrender and cancellation of such Warrant or stock
certificate, if mutilated, the Company will make and deliver a new Warrant or stock certificate of like tenor and dated as of such
cancellation, in lieu of such Warrant or stock certificate.

 

c)             
Saturdays, Sundays, Holidays, etc. If the last or appointed day for the taking of any action or the expiration of
any right required or granted herein shall not be a Business Day, then, such action may be taken or such right may be exercised
on the next succeeding Business Day.

 

d)            
Authorized Shares.

 

The Company covenants
that, during the period the Warrant is outstanding, it will reserve from its authorized and unissued Common Stock a sufficient
number of shares to provide for the issuance of the Warrant Shares upon the exercise of any purchase rights under this Warrant.
The Company further covenants that its issuance of this Warrant shall constitute full authority to its officers who are charged
with the duty of issuing the necessary Warrant Shares upon the exercise of the purchase rights under this Warrant. The Company
will take all such reasonable action as may be necessary to assure that such Warrant Shares may be issued as provided herein without
violation of any applicable law or regulation, or of any requirements of the Trading Market upon which the Common Stock may be
listed. The Company covenants that all Warrant Shares which may be issued upon the exercise of the purchase rights represented
by this Warrant will, upon exercise of the purchase rights represented by this Warrant and payment for such Warrant Shares in accordance
herewith, be duly authorized, validly issued, fully paid and nonassessable and free from all taxes, liens and charges created by
the Company in respect of the issue thereof (other than taxes in respect of any transfer occurring contemporaneously with such
issue).

 

    14

     

    

Except and
to the extent as waived or consented to by the Holder, the Company shall not by any action, including, without limitation, amending
its certificate of incorporation or through any reorganization, transfer of assets, consolidation, merger, dissolution, issue or
sale of securities or any other voluntary action, avoid or seek to avoid the observance or performance of any of the terms of this
Warrant, but will at all times in good faith assist in the carrying out of all such terms and in the taking of all such actions
as may be necessary or appropriate to protect the rights of Holder as set forth in this Warrant against impairment. Without limiting
the generality of the foregoing, the Company will (i) not increase the par value of any Warrant Shares above the amount payable
therefor upon such exercise immediately prior to such increase in par value, (ii) take all such action as may be necessary or appropriate
in order that the Company may validly and legally issue fully paid and nonassessable Warrant Shares upon the exercise of this Warrant
and (iii) use commercially reasonable efforts to obtain all such authorizations, exemptions or consents from any public regulatory
body having jurisdiction thereof, as may be, necessary to enable the Company to perform its obligations under this Warrant.

 

Before taking
any action which would result in an adjustment in the number of Warrant Shares for which this Warrant is exercisable or in the
Exercise Price, the Company shall obtain all such authorizations or exemptions thereof, or consents thereto, as may be necessary
from any public regulatory body or bodies having jurisdiction thereof.

 

e)             
Governing Law. All questions concerning the construction, validity, enforcement and interpretation of this Warrant
shall be governed by and construed and enforced in accordance with the internal laws of the State of New York, without regard to
the principles of conflicts of law thereof. Each party agrees that all legal proceedings concerning the interpretations, enforcement
and defense of the transactions contemplated by this Warrant (whether brought against a party hereto or their respective affiliates,
directors, officers, shareholders, partners, members, employees or agents) shall be commenced exclusively in the state and federal
courts sitting in the City of New York. Each party hereby irrevocably submits to the exclusive jurisdiction of the state and federal
courts sitting in the City of New York, Borough of Manhattan for the adjudication of any dispute hereunder or in connection herewith
or with any transaction contemplated hereby or discussed herein, and hereby irrevocably waives, and agrees not to assert in any
suit, action or proceeding, any claim that it is not personally subject to the jurisdiction of any such court, that such suit,
action or proceeding is improper or is an inconvenient venue for such proceeding. Each party hereby irrevocably waives personal
service of process and consents to process being served in any such suit, action or proceeding by mailing a copy thereof via registered
or certified mail or overnight delivery (with evidence of delivery) to such party at the address in effect for notices to it under
this Warrant and agrees that such service shall constitute good and sufficient service of process and notice thereof. Nothing contained
herein shall be deemed to limit in any way any right to serve process in any other manner permitted by law. If either party shall
commence an action, suit or proceeding to enforce any provisions of this Warrant, the prevailing party in such action, suit or
proceeding shall be reimbursed by the other party for their reasonable attorneys’ fees and other costs and expenses incurred
with the investigation, preparation and prosecution of such action or proceeding.

 

    15

     

    

f)             
Restrictions. The Holder acknowledges that the Warrant Shares acquired upon the exercise of this Warrant, if not
registered, and the Holder does not utilize cashless exercise, will have restrictions upon resale imposed by state and federal
securities laws.

 

g)            
Nonwaiver and Expenses. No course of dealing or any delay or failure to exercise any right hereunder on the part
of Holder shall operate as a waiver of such right or otherwise prejudice the Holder’s rights, powers or remedies. Without
limiting any other provision of this Warrant, if the Company willfully and knowingly fails to comply with any provision of this
Warrant, which results in any material damages to the Holder, the Company shall pay to the Holder such amounts as shall be sufficient
to cover any costs and expenses including, but not limited to, reasonable attorneys’ fees, including those of appellate proceedings,
incurred by the Holder in collecting any amounts due pursuant hereto or in otherwise enforcing any of its rights, powers or remedies
hereunder.

 

h)            
Notices. Any and all notices or other communications or deliveries to be provided by the Holders hereunder including,
without limitation, any Notice of Exercise, shall be in writing and delivered personally, by facsimile or e-mail, or sent by a
nationally recognized overnight courier service, addressed to the Company, at 20271 Goldenrod Lane, 2nd Floor, Germantown, Maryland
20876, Attention: ___________, facsimile number: _________, email address: ___________, or such other facsimile number,
email address or address as the Company may specify for such purposes by notice to the Holders. Any and all notices or other communications
or deliveries to be provided by the Company hereunder shall be in writing and delivered personally, by facsimile or e-mail, or
sent by a nationally recognized overnight courier service addressed to each Holder at the facsimile number, e-mail address or address
of such Holder appearing on the books of the Company. Any notice or other communication or deliveries hereunder shall be deemed
given and effective on the earliest of (i) the date of transmission, if such notice or communication is delivered via facsimile
at the facsimile number or via e-mail at the e-mail address set forth in this Section prior to 5:30 p.m. (New York City time) on
any date, (ii) the next Trading Day after the date of transmission, if such notice or communication is delivered via facsimile
at the facsimile number or via e-mail at the e-mail address set forth in this Section on a day that is not a Trading Day or later
than 5:30 p.m. (New York City time) on any Trading Day, (iii) the second Trading Day following the date of mailing, if sent by
U.S. nationally recognized overnight courier service, or (iv) upon actual receipt by the party to whom such notice is required
to be given. To the extent that any notice provided hereunder constitutes, or contains, material, non-public information regarding
the Company or any Subsidiaries, the Company shall simultaneously file such notice with the Commission pursuant to a Current Report
on Form 8-K.

 

i)              
Limitation of Liability. No provision hereof, in the absence of any affirmative action by the Holder to exercise
this Warrant to purchase Warrant Shares, and no enumeration herein of the rights or privileges of the Holder, shall give rise to
any liability of the Holder for the purchase price of any Common Stock or as a stockholder of the Company, whether such liability
is asserted by the Company or by creditors of the Company.

 

    16

     

    

j)              
Remedies. The Holder, in addition to being entitled to exercise all rights granted by law, including recovery of
damages, will be entitled to specific performance of its rights under this Warrant. The Company agrees that monetary damages would
not be adequate compensation for any loss incurred by reason of a breach by it of the provisions of this Warrant and hereby agrees
to waive and not to assert the defense in any action for specific performance that a remedy at law would be adequate.

 

k)            
Successors and Assigns. Subject to applicable securities laws, this Warrant and the rights and obligations evidenced
hereby shall inure to the benefit of and be binding upon the successors and permitted assigns of the Company and the successors
and permitted assigns of Holder. The provisions of this Warrant are intended to be for the benefit of any Holder from time to time
of this Warrant and shall be enforceable by the Holder or holder of Warrant Shares.

 

l)              
Amendment. This Warrant may be modified or amended or the provisions hereof waived with the written consent of the
Company, on the one hand, and the Holder, on the other hand.

 

m)           
Severability. Wherever possible, each provision of this Warrant shall be interpreted in such manner as to be effective
and valid under applicable law, but if any provision of this Warrant shall be prohibited by or invalid under applicable law, such
provision shall be ineffective to the extent of such prohibition or invalidity, without invalidating the remainder of such provisions
or the remaining provisions of this Warrant.

 

n)            
Headings. The headings used in this Warrant are for the convenience of reference only and shall not, for any purpose,
be deemed a part of this Warrant.

 

 

********************

 

(Signature Page Follows)

 

    17

     

    

 

 

IN WITNESS WHEREOF, the
Company has caused this Warrant to be executed by its officer thereunto duly authorized as of the date first above indicated.

 

 

	 	
        NEURALSTEM, INC.

         

        

	 	
        By: __________________________________________

        Name:

        Title:

         

 

 

 

    

     

    

NOTICE OF EXERCISE

 

To:       NEURALSTEM,
INC.

 

(1) 
The undersigned hereby elects to purchase ________ Warrant Shares of the Company pursuant to the terms of the attached Warrant
(only if exercised in full), and tenders herewith payment of the exercise price in full, together with all applicable transfer
taxes, if any.

 

(2) 
Payment shall take the form of (check applicable box):

 

[ ] in lawful
money of the United States; or

 

[ ] if permitted
the cancellation of such number of Warrant Shares as is necessary, in accordance with the formula set forth in subsection 2(c),
to exercise this Warrant with respect to the maximum number of Warrant Shares purchasable pursuant to the cashless exercise procedure
set forth in subsection 2(c).

 

(3) 
Please issue said Warrant Shares in the name of the undersigned or in such other name as is specified below:

 

_______________________________

 

 

The Warrant Shares shall be delivered to
the following DWAC Account Number:

 

_______________________________

 

_______________________________

 

_______________________________

 

 

[SIGNATURE
OF HOLDER]

 

Name of Investing Entity: ________________________________________________________________________

Signature of Authorized Signatory of
Investing Entity: _________________________________________________

Name of Authorized Signatory: ___________________________________________________________________

Title of Authorized Signatory: ____________________________________________________________________

Date: ________________________________________________________________________________________

 

 

 

 

  

    

     

    

ASSIGNMENT FORM

 

(To assign the
foregoing Warrant, execute this form and supply required information. Do not use this form to purchase shares.)

 

FOR VALUE RECEIVED,
the foregoing Warrant and all rights evidenced thereby are hereby assigned to

 

	 	Name:	                                                                                       	 
	 	 	(Please Print)	 
	 	Address:	                                                                                       	 
	 	
         

         

        Phone Number:

         

        Email Address:

         
	
        (Please Print)

         

                                                                                               

         

                                                                                               

         
	 
	 	Dated: _______________ __, ______	 	 
	 	Holder’s Signature:                                                                                         	 	 
	 	Holder’s Address:EX-4.13

 Exhibit 4.13 
  

 
  

TAMPA ELECTRIC COMPANY 
 and 

THE BANK OF NEW YORK MELLON, 
 As
Trustee 
  
  

FIFTEENTH SUPPLEMENTAL INDENTURE 

dated as of July 24, 2019 

Supplementing the Indenture 
 dated
as of July 1, 1998 
  
  

3.625% Notes Due 2050 
  

 
  

 Table of Contents 

 

							
	 	  	Page	 
	 ARTICLE ONE DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION
	  	 	2	 
			
	 Section 1.01.
	 	 Definitions
	  	 	2	 
			
	 Section 1.02.
	 	 Section References
	  	 	3	 
		
	 ARTICLE TWO DESIGNATION AND TERMS OF THE NOTES
	  	 	3	 
			
	 Section 2.01.
	 	 Establishment of Series
	  	 	3	 
			
	 Section 2.02.
	 	 Variations in Terms of the Notes
	  	 	4	 
			
	 Section 2.03.
	 	 Amount and Denominations; the Depositary
	  	 	4	 
			
	 Section 2.04.
	 	 Stated Maturity
	  	 	4	 
			
	 Section 2.05.
	 	 Interest Rates and Interest Payment Dates
	  	 	4	 
			
	 Section 2.06.
	 	 Form and Other Terms of the Notes
	  	 	5	 
			
	 Section 2.07.
	 	 Authentication and Delivery
	  	 	5	 
			
	 Section 2.08.
	 	 Redemption; No Sinking Fund
	  	 	5	 
		
	 ARTICLE THREE MISCELLANEOUS
	  	 	6	 
			
	 Section 3.01.
	 	 Effect On Original Indenture
	  	 	6	 
			
	 Section 3.02.
	 	 Counterparts
	  	 	6	 
			
	 Section 3.03.
	 	 Recitals
	  	 	6	 
			
	 Section 3.04.
	 	 Governing Law
	  	 	6	 
			
	 Section 3.05.
	 	 Force Majeure
	  	 	6	 
			
	 Section 3.06.
	 	 Waiver of Jury Trial
	  	 	7	 
			
	 Section 3.07.
	 	 Damages
	  	 	7	 
			
	 Section 3.08.
	 	 FATCA
	  	 	7	 
			
	 Section 3.09.
	 	 Reports
	  	 	7	 
		
	 EXHIBIT A FORM OF NOTE
	  	 	A-1	 
		
	 EXHIBIT B FORM OF SUPPLEMENTAL COMPANY ORDER
	  	 	B-1	 

  
 i 

 This Fifteenth Supplemental Indenture, dated as of July 24, 2019, is between Tampa
Electric Company, a corporation duly organized and existing under the laws of the State of Florida (hereinafter called the “Company”) and having its principal office at TECO Plaza, 702 North Franklin Street, Tampa, Florida 33602,
and The Bank of New York Mellon, as trustee (hereinafter called the “Trustee”), and having its principal corporate trust office at 240 Greenwich Street, 7 West, New York, New York 10286. 

WITNESSETH: 
 WHEREAS, the
Company and the Trustee entered into an Indenture, dated as of July 1, 1998, as amended by a Third Supplemental Indenture, dated as of June 15, 2001, as further amended by the Tenth Supplemental Indenture, dated as of September 19,
2012, between the Company and the Trustee (the “Original Indenture”), pursuant to which one or more series of debt of the Company (the “Securities”) may be issued from time to time; and 

WHEREAS, Section 201 of the Original Indenture permits the terms of any series of Securities to be established in an indenture
supplemental to the Original Indenture; and 
 WHEREAS, Section 901(7) of the Original Indenture provides that a supplemental indenture
may be entered into by the Company and the Trustee without the consent of any Holders of the Securities to establish the form and terms of the Securities of any series; and 

WHEREAS, the Company has requested the Trustee to join with it in the execution and delivery of this Fifteenth Supplemental Indenture in order
to supplement and amend the Original Indenture by, among other things, establishing the form and terms of a series of Securities to be known as the Company’s “3.625% Notes due 2050” (the “Notes”); and 

WHEREAS, the Company and the Trustee desire to enter into this Fifteenth Supplemental Indenture for the purposes set forth in
Sections 201 and 901 of the Original Indenture as referred to above; and 
 WHEREAS, the Company has furnished the Trustee with a Board
Resolution authorizing the execution of this Fifteenth Supplemental Indenture; and 
 WHEREAS, all things necessary to make this Fifteenth
Supplemental Indenture a valid agreement of the Company and the Trustee and a valid supplement to the Original Indenture have been done, 

 NOW, THEREFORE, THIS FIFTEENTH SUPPLEMENTAL INDENTURE WITNESSETH: 

For and in consideration of the premises and the purchase of the Notes to be issued hereunder by Holders thereof, the Company and the Trustee
mutually covenant and agree, for the equal and proportionate benefit of the respective Holders from time to time of the Notes, as follows: 

ARTICLE ONE 

Definitions and Other Provisions of General Application 

Section 1.01.    Definitions 

All capitalized terms that are used herein and not otherwise defined herein shall have the meanings assigned to them in the Original Indenture.
The Original Indenture together with this Fifteenth Supplemental Indenture are hereinafter sometimes collectively referred to as the “Indenture.” As used in this Fifteenth Supplemental Indenture, the following capitalized terms
shall have the following respective meanings: 
 “Business Day” means any day other than (i) a Saturday or Sunday that
is neither a legal holiday nor a day on which banking institutions are authorized or required by law or regulations to close in the City of New York, or (ii) a day on which the Corporate Trust Office of the Trustee is closed for business. 

“Comparable Treasury Issue” means the United States Treasury security selected by an Independent Investment Banker as having
a maturity comparable to the remaining term of the Notes to be redeemed (assuming for this purpose that the Notes matured on December 15, 2049) that would be used, at the time of selection and in accordance with customary financial practice, in
pricing new issues of corporate debt securities of comparable maturity to the remaining term of such Notes. 
 “Comparable Treasury
Price” means with respect to any redemption date (1) the average of five Reference Treasury Dealer Quotations for such redemption date, after excluding the highest and lowest Reference Treasury Dealer Quotations, or (2) if an
Independent Investment Banker obtains fewer than five such Reference Treasury Dealer Quotations, the average of all such quotations. 

“Depositary” means The Depository Trust Company or its successor. 

“Independent Investment Banker” means J.P. Morgan Securities LLC, MUFG Securities Americas Inc., Scotia Capital (USA) Inc.,
RBC Capital Markets, LLC, or Wells Fargo Securities, LLC, or any of their respective successors, as designated by the Company, or if all of those firms are unwilling or unable to serve as such, an independent investment and banking institution of
national standing appointed by the Company. 
 “Interest Payment Date” means June 15 and December 15 of
each year. 
 “Notes” has the meaning set forth in the preamble hereof. 

“Original Issue Date” means the date upon which the Notes are initially issued by the Company, such date to be set forth on
the face of each Note. 

  
 2 

 “Person” means any individual, corporation, partnership, limited liability
company, joint venture, association, joint-stock company, trust, unincorporated organization or government or any agency or political subdivision of any government. 

“Record Date” means the fifteenth calendar day (whether or not a Business Day) immediately preceding the related Interest
Payment Date, provided, however, as long as the Notes are registered in the name of the Depositary, its nominee or a successor depositary, the Record Date shall be the close of business on the Business Day immediately preceding the Interest Payment
Date. The Record Date shall constitute the Regular Record Date for purposes of the Original Indenture. 
 “Reference Treasury
Dealer” means J.P. Morgan Securities LLC, MUFG Securities Americas Inc., Scotia Capital (USA) Inc., RBC Capital Markets, LLC, or Wells Fargo Securities, LLC, or each of their respective affiliates and successors; provided that if any such
Reference Treasury Dealer ceases to be a primary U.S. Government securities dealer in New York City (a “Primary Treasury Dealer”), the Company will substitute another Primary Treasury Dealer. 

“Reference Treasury Dealer Quotations” means, with respect to each Reference Treasury Dealer and any redemption date, the
average, as determined by an Independent Investment Banker, of the bid and asked prices for the Comparable Treasury Issue (expressed in each case as a percentage of its principal amount) quoted in writing to an Independent Investment Banker at 3:30
p.m., New York City time, on the third Business Day preceding such redemption date. 
 “Treasury Rate” means, as of any
redemption date, the rate per annum equal to the semiannual equivalent yield to maturity (computed as of the second Business Day immediately preceding that redemption date) of the Comparable Treasury Issue, assuming a price for the Comparable
Treasury Issue (expressed as a percentage of its principal amount) equal to the Comparable Treasury Price for that redemption date. 

Section 1.02.    Section References 

Each reference to a particular section set forth in this Fifteenth Supplemental Indenture shall, unless the context otherwise requires, refer
to this Fifteenth Supplemental Indenture. 
 ARTICLE TWO 

Designation and Terms of the Notes 

Section 2.01.    Establishment of Series 

There is hereby created a series of Securities to be known and designated as the “3.625% Notes Due 2050” which shall rank equally
with each other and all other unsecured and unsubordinated indebtedness of the Company. For the purposes of the Original Indenture, the Notes shall constitute a single series of Securities. 

  
 3 

 Section 2.02.    Variations in Terms of the Notes 

Subject to the terms and conditions set forth in the Original Indenture and in this Fifteenth Supplemental Indenture, the terms of any
particular Note may vary from the terms of any other Note as contemplated by Section 301 of the Original Indenture, and the terms for a particular Note will be set forth in such Note as delivered to the Trustee or an Authenticating Agent for
authentication pursuant to Section 303 of the Original Indenture. 
 Section 2.03.    Amount and
Denominations; the Depositary 
 (a)    The initial principal amount of Notes that may be issued under this Fifteenth
Supplemental Indenture shall be $300,000,000. Additional Notes may be issued under this Fifteenth Supplemental Indenture in unlimited principal amounts as permitted by the Original Indenture. The authorized denominations of Notes shall be $2,000 or
integral multiples of $1,000 in excess thereof. 
 (b)    The Notes shall be issuable only in fully registered form,
without coupons, and will initially be registered in the name of the Depositary, or its nominee who is hereby designated as “Depositary” under the Original Indenture. 

Section 2.04.    Stated Maturity 

The Stated Maturity of the principal amount of the Notes shall be June 15, 2050. 

Section 2.05.    Interest Rates and Interest Payment Dates 

(a)    Interest Rate. The Notes shall bear interest at the annual rate of 3.625% from the Original Issue Date to the
date on which the principal shall become due on the Stated Maturity, and if such principal is not fully paid on the Stated Maturity, until such principal is paid in full. Interest on the Notes will be payable semi-annually on each Interest Payment
Date, commencing on December 15, 2019. Such interest will be payable to the Holder thereof as of the related Record Date. 

(b)    Computation of Interest. The amount of interest payable for any period will be computed on the basis of a
year of 360 days consisting of twelve 30-day months. Except for the effect of any adjustment in the Interest Payment Date as provided in the following sentence, the amount of interest payable for any
period shorter than a full six-month period for which interest is computed, will be computed on the basis of the actual number of days elapsed in such a 180-day period.
If any Interest Payment Date would otherwise be a day that is not a Business Day, the payment required to be made on such Interest Payment Date will be postponed to the next succeeding Business Day, and no interest will accrue on such payment for
the period from and after such Interest Payment Date to the date of such payment on the next succeeding Business Day, except that, if such Business Day is in the next succeeding calendar year, such payment shall be made on the immediately preceding
Business Day, in each case with the same force and effect as if made on such Interest Payment Date. 

  
 4 

 Section 2.06.    Form and Other Terms of the Notes 

(a)    Attached hereto as Exhibit A is the form of Note, which form is hereby established as the form in which the
Notes may be issued and which shall be completed with the series designation, Stated Maturity, interest rate and CUSIP number applicable to the Notes upon such issuance. 

(b)    Subject to (a) above, any Note may be issued in such other form as may be provided by, or not inconsistent
with, the terms of the Original Indenture and this Fifteenth Supplemental Indenture. 

Section 2.07.    Authentication and Delivery 

As provided in and pursuant to Section 303 of the Original Indenture, each time that the Company delivers Notes to the Trustee or
Authenticating Agent for authentication after the initial issuance of Notes under this Fifteenth Supplemental Indenture, the Company shall deliver a Supplemental Company Order in the form of Exhibit B to this Fifteenth
Supplemental Indenture (which form shall be completed upon delivery with the series designation applicable to the Notes) for the authentication and delivery of such Notes and the Trustee or such Authenticating Agent shall authenticate and deliver
such Notes. 
 Section 2.08.    Redemption; No Sinking Fund 

(a)    Prior to December 15, 2049, the Notes are subject to redemption, in whole or in part, at any time, at the
option of the Company, at a redemption price equal to the greater of: 
 (i)    100% of the principal
amount of Notes then outstanding to be redeemed, or 
 (ii)    the sum of the present values of the
remaining scheduled payments of principal and interest on the Notes then outstanding to be redeemed that would be due if such Notes matured on December 15, 2049 (not including any portion of such payments of interest accrued as of the
redemption date) discounted to the redemption date on a semiannual basis (computed based on a 360-day year consisting of twelve 30-day months) at the Treasury Rate, plus
twenty basis points (0.20%), as calculated by an Independent Investment Banker, 
 plus, in either of the above cases, accrued and unpaid interest thereon
to the redemption date. From and after December 15, 2049, the Notes are subject to redemption in whole or in part at the option of the Company at a redemption price equal to 100% of the principal amount of Notes then outstanding to be redeemed
plus accrued and unpaid interest thereon to the redemption date. 
 (b)    The Company will deliver a notice of
redemption at least 30 days but no more than 60 days before the redemption date to each Holder of Notes to be redeemed. If the Company elects to partially redeem the Notes, the Trustee will select in a fair and appropriate manner the Notes to be
redeemed (or, in the case of Notes held in global form, the Depositary will select the Notes to be redeemed in accordance with its standard procedures). 

  
 5 

 (c)    Unless the Company defaults in payment of the redemption price,
on and after the redemption date, interest will cease to accrue on the Notes or portions thereof called for redemption. 

(d)    The Notes are not entitled to the benefit of any sinking fund or analogous provision. 

ARTICLE THREE 

Miscellaneous 

Section 3.01.    Effect On Original Indenture 

The Fifteenth Supplemental Indenture is a supplement to the Original Indenture. As supplemented by this Fifteenth Supplemental Indenture, the
Original Indenture is in all respects ratified, approved and confirmed, and the Original Indenture and this Fifteenth Supplemental Indenture shall together constitute one and the same instrument. 

Section 3.02.    Counterparts 

This Fifteenth Supplemental Indenture may be executed in any number of counterparts, each of which so executed shall be deemed to be an
original, but all such counterparts shall together constitute one and the same instrument. 

Section 3.03.    Recitals 

The recitals contained herein shall be taken as the statements of the Company, and the Trustee assumes no responsibility for their correctness.
The Trustee makes no representations as to the validity or sufficiency of this Fifteenth Supplemental Indenture. The Trustee shall not be accountable for the use or application by the Company of the Notes or the proceeds thereof. 

Section 3.04.    Governing Law 

This Fifteenth Supplemental Indenture shall be governed by and construed in accordance with the laws of the jurisdiction that govern the
Original Indenture and its construction. 
 Section 3.05.    Force Majeure 

In no event shall the Trustee be responsible or liable for any failure or delay in the performance of its obligations hereunder arising out of
or caused by, directly or indirectly, forces beyond its control, including, without limitation, strikes, work stoppages, accidents, acts of war or terrorism, civil or military disturbances, nuclear or natural catastrophes or acts of God, and
interruptions, loss or malfunctions of utilities, communications or computer (software and hardware) services; it being understood that the Trustee shall use reasonable efforts which are consistent with accepted practices in the banking industry to
resume performance as soon as practicable under the circumstances. 

  
 6 

 Section 3.06.    Waiver of Jury Trial 

EACH OF THE COMPANY AND THE TRUSTEE HEREBY IRREVOCABLY WAIVES, TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY AND ALL RIGHT TO TRIAL BY
JURY IN ANY LEGAL PROCEEDING ARISING OUT OF OR RELATING TO THIS INDENTURE, THE SECURITIES OR THE TRANSACTION CONTEMPLATED HEREBY. 

Section 3.07.    Damages 

In no event shall the Trustee be responsible or liable for special, indirect, punitive, or consequential loss or damage of any kind whatsoever
(including, but not limited to, loss or profit) irrespective of whether the Trustee has been advised of the likelihood of such loss or damage and regardless of the form of action. 

Section 3.08.    FATCA 

In order to comply with applicable tax laws, rules and regulations (inclusive of directives, guidelines and interpretations promulgated by
competent authorities) in effect from time to time (“Applicable Law”), if a foreign financial institution, issuer, trustee, paying agent, holder or other institution (the “Foreign Institution”) has agreed to be a
party or subject to the Indenture, (i) the Foreign Institution agrees to provide (and, to the extent such information is in the possession of the Company, the Company agrees to provide) to The Bank of New York Mellon sufficient information
about itself so The Bank of New York Mellon can determine whether it has tax related obligations under Applicable Law, and (ii) the Company, the Guarantor and the Foreign Institution agree that The Bank of New York Mellon shall be entitled to
make any withholding or deduction from payments under the Indenture to the extent necessary to comply with Applicable Law. The terms of this section shall survive the termination of this Indenture. 

Section 3.09.    Reports 

Delivery of the reports and documents described in Section 704 of the Original Indenture to the Trustee is for informational purposes
only, and the Trustee’s receipt of such shall not constitute constructive notice of any information contained therein or determinable from information contained therein, including the Company’s compliance with any of its covenants under
the Indenture. 
 [The balance of this page intentionally left blank.] 

  
 7 

 IN WITNESS WHEREOF, the parties hereto have caused this Fifteenth Supplemental
Indenture to be duly executed as of the date and year first written above. 
  

			
	TAMPA ELECTRIC COMPANY
		
	By:	 	 /s/ Nancy Tower

	Name:	 	Nancy Tower
	Title:	 	President
		
	By:	 	 /s/ Gregory W. Blunden

	Name:	 	Gregory W. Blunden
	Title:	 	Senior Vice President – Finance and Accounting, Treasurer and Chief Financial Officer
(Chief Accounting Officer)

 
			
	THE BANK OF NEW YORK MELLON, AS TRUSTEE
		
	By:	 	 /s/ Laurence J. O’Brien

	Name:	 	Laurence J. O’Brien
	Title:	 	Vice President

  
 [Signature Page to
Fifteenth Supplemental Indenture] 

 EXHIBIT A 

FORM OF NOTE 
  

			
	CUSIP NO.:                     	  	PRINCIPAL AMOUNT: $            
	REGISTERED NO.                     	  	

 TAMPA ELECTRIC COMPANY 

3.625% Notes Due 2050 
  

	☒	 Check this box if the Note is a Global Note. 

Applicable if the Note is a Global Note: 

UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION, TO THE ISSUER OR ITS AGENT
FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY (AND ANY PAYMENT IS
MADE TO CEDE & CO. OR SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL
INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN. 
 This Note is a Global Security
within the meaning of the Indenture hereinafter referred to and is registered in the name of Cede & Co., or such other nominee of The Depository Trust Company, a New York corporation, or any successor depositary
(“Depositary”), as requested by an authorized representative of the Depositary. This Note is exchangeable for Notes registered in the name of a person other than the Depositary or its nominee only in the limited circumstances
described in the Indenture and may not be transferred except as a whole by the Depositary to a nominee of the Depositary or by a nominee of the Depositary to the Depositary or another nominee of the Depositary. 

 

					
	 ORIGINAL ISSUE DATE: July 24, 2019

ISSUE PRICE: 98.774% (as a percentage of principal amount)

STATED MATURITY: June 15, 2050
 INTEREST RATE:
3.625% per annum.
	  	 INTEREST PAYMENT DATES: June 15 and December 15 of each year commencing December 15, 2019.

SPECIFIED CURRENCY: U.S. dollars
 AUTHORIZED
DENOMINATIONS: N/A (Only applicable if specified currency is other than U.S. dollars)
	  	 SINKING FUND: None
 YIELD TO
MATURITY: N/A
 REDEMPTION: Redeemable in whole or in part, at the Company’s option, from time to time at the redemption prices described on
the reverse of this Note.
 DEPOSITARY: The Depository Trust Company, or any successor depository.

  
 A-1 

 TAMPA ELECTRIC COMPANY, a corporation duly organized and existing under the laws of the
State of Florida (herein called the “Company,” which term includes any successor corporation under the Indenture hereinafter referred to), for value received, hereby promises to pay to CEDE & CO., or registered assigns, the
principal sum set forth on the face of this Note on the Stated Maturity, upon the presentation and surrender hereof at the principal corporate trust office of The Bank of New York Mellon, or its successor in trust (the “Trustee”),
or such other office as the Trustee has designated in writing, and to pay interest on the unpaid principal balance hereof at a rate per annum (computed based on a 360-day year consisting of twelve 30-day months) equal to the Interest Rate set forth on the face of this Note for the period from the Original Issue Date to, but excluding, the Stated Maturity. 

Interest will be payable on the Interest Payment Dates to the Person in whose name this Note is registered at the close of business on the
related Record Date, which is the fifteenth calendar day (whether or not a Business Day) immediately preceding the related Interest Payment Date, provided, however, as long as this Note is registered in the name of the Depositary, its nominee or a
successor depositary, the Record Date shall be the close of business on the Business Day immediately preceding the Interest Payment Date. In each case, payments shall be made in accordance with the provisions hereof, until the principal hereof is
paid or duly made available for payment. 
 Payment of the principal of (and premium, if any) and any such interest on this Note shall be
made in immediately available funds at the office or agency of the Company maintained for that purpose in the City of New York in the State of New York, in such coin or currency of the United States of America as at the time of payment is legal
tender for payment of public and private debts. 
 Reference is hereby made to the further provisions of this Note set forth on the reverse
hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. 
 Unless the certificate of
authentication hereon has been executed by the Trustee referred to on the reverse hereof by manual signature, this Note shall not be entitled to any benefit under the Indenture or be valid or obligatory for any purpose. 

  
 A-2 

 IN WITNESS WHEREOF, TAMPA ELECTRIC COMPANY has caused this instrument to be duly executed.

  

			
	 TAMPA ELECTRIC
COMPANY

 
			
		
	 By:
	 	
              
      

	 Name:
	 	
	 Title:
	 	

 
			
		
	 By:
	 	
              
      

	 Name:
	 	
	 Title:
	 	

  

			
	Dated:             , 20    
	
	TRUSTEE’S CERTIFICATE OF AUTHENTICATION
	This is one of the series designated therein referred
	to in the within-mentioned Indenture.
	
	THE BANK OF NEW YORK MELLON,
	as Trustee

  

			
	By:	 	
                    

		 	      Authorized signatory

  
 A-3 

 (REVERSE OF NOTE) 

TAMPA ELECTRIC COMPANY 

3.625% Notes Due 2050 
 This Note
is one of a duly authorized series of securities of the Company (herein called the “Notes”), issued and to be issued under an Indenture dated as of July 1, 1998, as amended, and as supplemented by the Fifteenth Supplemental
Indenture, dated as of July 24, 2019 (as such has been or shall be amended or supplemented, the “Indenture”), between the Company and The Bank of New York Mellon, as trustee (the “Trustee”, which term includes
any successor Trustee under the Indenture), to which Indenture reference is hereby made for a statement of the respective rights, limitations of rights, duties and immunities thereunder of the Company, the Trustee and the Holders of the Notes and of
the terms upon which the Notes are, and are to be, authenticated and delivered. This Note is one of the securities of the series designated on the face hereof. 

DEFINITIONS 
 The
following terms, as used herein, have the following meanings unless the context or use clearly indicates another or different meaning or intent: 

“Business Day” means any day other than (i) a Saturday or Sunday that is neither a legal holiday nor a day on which
banking institutions are authorized or required by law or regulations to close in the City of New York, or (ii) a day on which the Corporate Trust Office of the Trustee is closed for business. 

“Comparable Treasury Issue” means the United States Treasury security selected by an Independent Investment Banker as having
a maturity comparable to the remaining term of the Notes to be redeemed (assuming for this purpose that the Notes matured on December 15, 2049) that would be used, at the time of selection and in accordance with customary financial practice, in
pricing new issues of corporate debt securities of comparable maturity to the remaining term of such Notes. 
 “Comparable Treasury
Price” means with respect to any redemption date (1) the average of five Reference Treasury Dealer Quotations for such redemption date, after excluding the highest and lowest Reference Treasury Dealer Quotations, or (2) if an
Independent Investment Banker obtains fewer than five such Reference Treasury Dealer Quotations, the average of all such quotations. 

“Depositary” shall mean The Depository Trust Company or any successor depositary. 

“Independent Investment Banker” means J.P. Morgan Securities LLC, MUFG Securities Americas Inc., Scotia Capital (USA) Inc.,
RBC Capital Markets, LLC, or Wells Fargo Securities, LLC, or any of their respective successors, as designated by the Company, or if all of those firms are unwilling or unable to serve as such, an independent investment and banking institution of
national standing appointed by the Company. 

  
 A-4 

 “Interest Payment Date” means each of the dates on which interest on this
Note is payable, which dates are set forth on the face of this Note. 
 “Reference Treasury Dealer” means J.P. Morgan
Securities LLC, MUFG Securities Americas Inc., Scotia Capital (USA) Inc., RBC Capital Markets, LLC, or Wells Fargo Securities, LLC, or each of their respective affiliates and successors; provided that if any such Reference Treasury Dealer ceases to
be a primary U.S. Government securities dealer in New York City (a “Primary Treasury Dealer”), the Company will substitute another Primary Treasury Dealer. 

“Reference Treasury Dealer Quotations” means, with respect to each Reference Treasury Dealer and any redemption date, the
average, as determined by an Independent Investment Banker, of the bid and asked prices for the Comparable Treasury Issue (expressed in each case as a percentage of its principal amount) quoted in writing to an Independent Investment Banker at 3:30
p.m., New York City time, on the third Business Day preceding such redemption date. 
 “Treasury Rate” means, as of any
redemption date, the rate per annum equal to the semiannual equivalent yield to maturity (computed as of the second Business Day immediately preceding that redemption date) of the Comparable Treasury Issue, assuming a price for the Comparable
Treasury Issue (expressed as a percentage of its principal amount) equal to the Comparable Treasury Price for that redemption date. 

INTEREST RATE 
 This Note
will bear interest at the rate per annum (computed based on a 360-day year consisting of twelve 30-day months) identified on the face of this Note. Except for the effect
of any adjustment in the Interest Payment Date as provided in the following sentence, the amount of interest payable for any period shorter than a full six-month period for which interest is computed, will be
computed on the basis of the actual number of days elapsed in such a 180-day period. If any Interest Payment Date would otherwise be a day that is not a Business Day, the payment required to be made on such
Interest Payment Date will be postponed to the next succeeding Business Day, and no interest will accrue on such payment for the period from and after such Interest Payment Date to the date of such payment on the next succeeding Business Day, except
that, if such Business Day is in the next succeeding calendar year, such payment shall be made on the immediately preceding Business Day, in each case with the same force and effect as if made on such Interest Payment Date. 

OPTIONAL REDEMPTION 

Prior to December 15, 2049, the Notes are subject to redemption, in whole or in part, at any time, at the option of the Company, at a
redemption price equal to the greater of: 
 (i)    100% of the principal amount of the Notes then
outstanding to be redeemed, or 
 (ii)    the sum of the present values of the remaining scheduled
payments of principal and interest on the Notes then outstanding to be redeemed that would be due if 

  
 A-5 

 
such Notes matured on December 15, 2049 (not including any portion of such payments of interest accrued as of the redemption date) discounted to the redemption date on a semiannual basis
(computed based on a 360-day year consisting of twelve 30-day months) at the Treasury Rate, plus twenty basis points (0.20%), as calculated by an Independent Investment
Banker, 
 plus, in either of the above cases, accrued and unpaid interest thereon to the redemption date. From and after December 15, 2049, the Notes
are subject to redemption in whole or in part at the option of the Company at a redemption price equal to 100% of the principal amount of Notes then outstanding to be redeemed plus accrued and unpaid interest thereon to the redemption date. 

The Company will deliver a notice of redemption at least 30 days but no more than 60 days before the redemption date to each Holder of the
Notes to be redeemed. If the Company elects to partially redeem the Notes, the Trustee will select in a fair and appropriate manner the Notes to be redeemed (or, in the case of Notes held in global form, the Depositary will select the Notes to be
redeemed in accordance with its standard procedures). 
 Unless the Company defaults in payment of the redemption price, on and after the
redemption date, interest will cease to accrue on the Notes or portions thereof called for redemption. 
 The Notes are not entitled to the
benefit of any sinking fund or analogous provision. 
 TRANSFER OR EXCHANGE 

As provided in the Indenture and subject to certain limitations herein and therein set forth, the transfer of this Note is registerable in the
Security Register, upon surrender of this Note for registration of transfer at the office or agency of the Company in any place where the principal of (and premium, if any) and interest on this Note are payable, duly endorsed by, or accompanied by a
written instrument of transfer in form satisfactory to the Company and the Security Registrar duly executed by, the Holder hereof or his attorney duly authorized in writing, and thereupon one or more new Notes of this series and of like tenor, of
authorized denominations and for the same aggregate principal amount, will be issued to the designated transferee or transferees. 
 The
Notes are issuable only in registered form without coupons and, except for such Notes issued in book-entry form, only in denominations of $2,000 and any integral multiple of $1,000. As provided in the Indenture and subject to certain limitations
herein and therein set forth, this Note is exchangeable for a like aggregate principal amount of Notes of this series and of like tenor of a different authorized denomination, as requested by the Holder surrendering the same. 

No service charge shall be made for any such registration of transfer or exchange, but the Company may require payment of a sum sufficient to
cover any tax or other governmental charge payable in connection therewith. 

  
 A-6 

 Prior to due presentment of this Note for registration of transfer, the Company or the
Trustee and any agent of the Company or the Trustee may treat the Person in whose name this Note is registered as the owner hereof for all purposes, whether or not this Note be overdue, and neither the Company, the Trustee nor any such agent shall
be affected by notice to the contrary. 
 OTHER PROVISIONS 

The Indenture permits, with certain exceptions as therein provided, the amendment thereof and the modification of the rights and obligations
of the Company and the rights of the Holders of the Securities of each series to be affected under the Indenture at any time by the Company and the Trustee with the consent of the Holders of a majority in principal amount of the Securities at the
time Outstanding of each series to be affected and of the Holders of 66 2/3% in principal amount of the Securities at the time Outstanding of all series to be affected. The Indenture also contains provisions permitting the Holders of specified
percentages in principal amount of the Securities of each series at the time Outstanding, on behalf of the Holders of all Securities of such series, to waive compliance by the Company with certain provisions of the Indenture and certain past
defaults under the Indenture and their consequences. To the extent permitted by law, any such consent or waiver by the Holder of this Note shall be conclusive and binding upon such Holder and upon all future Holders of this Note and of any Note
issued upon the registration of transfer hereof or in exchange hereof or in lieu hereof, whether or not notation of such consent or waiver is made upon this Note. 

No reference herein to the Indenture and no provision of this Note or of the Indenture shall alter or impair the obligation of the Company,
which is absolute and unconditional, to pay the principal of (and premium, if any) and interest on this Note at the times, place and rate, and in the coin or currency, herein prescribed. 

All terms used in this Note that are defined in the Indenture shall have the meanings assigned to them in the Indenture. 

This Note shall be governed by and construed in accordance with the laws of the State of New York. 

  
 A-7 

 ABBREVIATIONS 

The following abbreviations, when used in the inscription on the face of this instrument, shall be construed as though they were written out
in full according to applicable laws or regulations: 
  

			
	TEN COM	 	— as tenants in common UNIF GIFT MIN
ACT—                     CUSTODIAN                
    
	TEN ENT	 	— as tenants by the entireties
                                         
       (Cust)               (Minor)
	JT TEN	 	— as joint tenants with right of survivorship Under Uniform Gifts to Minors Act and not as tenants in
common                     
		 	
(State)                   
             

 Additional abbreviations may also be used though not in the above list. 

FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and transfer(s) unto 

Please Insert Social Security or 
 Other Identifying Number of
Assignee 
  

                       
                                         

 PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS INCLUDING POSTAL ZIP CODE OF ASSIGNEE 

 
  
  

 
 the within Security of TAMPA ELECTRIC COMPANY and
does hereby irrevocably constitute and appoint
                                         
                        attorney to transfer said Security on the books of the Company, with full power of substitution in the
premises. 

Dated:                         
                             
  

                          
               
 NOTICE: The signature to this assignment must correspond with the
name as written upon the face of the within instrument in every particular, without alteration or enlargement or any change whatsoever. 

  
 A-8 

 EXHIBIT B 

FORM OF SUPPLEMENTAL COMPANY ORDER 

TAMPA ELECTRIC COMPANY 
 3.625%
NOTES DUE 2050 
 SUPPLEMENTAL COMPANY ORDER 

Pursuant to Section 2.07 of Article Two of the Fifteenth Supplemental Indenture, dated as of July 24, 2019, to the Indenture, dated
as of July 1, 1998, as amended, you are instructed to authenticate a Note, of the series identified above, in the principal amount of $        . 

IN WITNESS WHEREOF, I have hereunto set my hand this
                     day of             , 20    . 

 

			
	TAMPA ELECTRIC COMPANY
		
	By:	 	
                    

		 	Name:
		 	Title:

  
 B-1

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