Document:

EX-4.1

 Exhibit 4.1 

NEITHER THIS WARRANT NOR ANY OF THE SECURITIES ISSUABLE HEREUNDER HAVE BEEN REGISTERED UNDER THE SECURITIES ACT (AS DEFINED BELOW), OR APPLICABLE STATE
SECURITIES LAWS, AND MAY NOT BE OFFERED FOR SALE, SOLD, TRANSFERRED OR ASSIGNED (I) IN THE ABSENCE OF (A) AN EFFECTIVE REGISTRATION STATEMENT FOR THE SECURITIES UNDER THE SECURITIES ACT, OR (B) AN OPINION OF COUNSEL, IN A GENERALLY
ACCEPTABLE FORM, THAT REGISTRATION IS NOT REQUIRED UNDER SAID ACT (II) UNLESS SOLD OR TRANSFERRED TO A “QUALIFIED INSTITUTIONAL BUYER” WITHIN THE MEANING OF RULE 144A UNDER THE SECURITIES ACT OR (III) UNLESS SOLD PURSUANT TO RULE 144 OR
RULE 144A UNDER SAID ACT. 
 AUTHENTIDATE HOLDING CORP. 

COMMON STOCK PURCHASE WARRANT 
  

			
	No. 2015 - 3		April 3, 2015

 THIS CERTIFIES THAT, for value received, the Holder is entitled to purchase, and AUTHENTIDATE HOLDING
CORP., a Delaware corporation (the “Company”), promises and agrees to sell and issue to the Holder, at any time, or from time to time, during the Exercise Period, up to 3,166,667 shares of Common Stock, par value $0.001 per
share (the “Common Stock”), of the Company, at the Exercise Price, subject to the provisions and upon the terms and conditions hereinafter set forth. This Warrant is issued by the Company in connection with the Note Amendment
Agreement entered into between the Company and the original Holder hereof (the “Amendment”), which Amendment was entered into as of the Issue Date of this Warrant. 

1. Definitions of Certain Terms. In addition to the terms defined elsewhere in this Warrant, the following terms have the following meanings: 

(a) “Business Day” means a day on which banks are open for business in the city of New York. 

(b) “Commission” means the U.S. Securities and Exchange Commission. 

(c) “Exchange Act” means the Securities Exchange Act of 1934, as amended, and the rules and regulations promulgated
thereunder. 
 (d) “Exercise Price” means the price at which the Holder may purchase one share of Common Stock upon
exercise of this Warrant as determined from time to time pursuant to the provisions hereof. The initial Exercise Price is $0.31 per share, subject to adjustment as provided herein. 

(e) “Expiration Date” means the 54-month anniversary of the Initial Exercise Date. 

(f) “Holder” means a record holder of the Warrant or shares of Common Stock obtained or obtainable upon exercise of the
Warrant, as applicable. The initial Holder is VER 83, LLC. 
 (g) “Initial Exercise Date” means the first Business Day
following the six-month anniversary of the Issue Date. 
 (h) “Issue Date” means April 3, 2015. 

 (i) “Securities Act” means the Securities Act of 1933, as amended. 

(j) “Warrant” means this Common Stock purchase warrant and any warrant or warrants hereafter issued as a consequence of the
exercise or transfer of this warrant in whole or in part. 
 2. Exercise of Warrant. 

(a) Manner of Exercise. 

(i) Cash Exercise. This Warrant may be exercised, in whole or in part, at any time or from time to time, during the period commencing
as of 9:30:01 a.m., New York time, on the Initial Exercise Date and ending as of 5:30 p.m., New York time, on the Expiration Date (the “Exercise Period”), for 3,166,667 fully paid and non-assessable shares of Common Stock (the
“Warrant Shares”), for an exercise price per share equal to the Exercise Price, by delivery to the Company at its headquarters, or at such other place as is designated in writing by the Company, of: 

(1) a duly executed Notice of Exercise, substantially in the form of Attachment I attached hereto and incorporated by reference
herein; 
 (2) this Warrant; and 

(3) subject to Section 2(a)(ii) below, payment of an amount in cash equal to the product of the Exercise Price multiplied by the
number of Warrant Shares being purchased upon such exercise, with such payment being in the form of a wire transfer of immediately available U.S. funds to an account designated in writing by the Company. 

The date on which the Company receives the Notice of Exercise, this Warrant, and the Exercise Price payable with respect to the Warrant Shares
being purchased shall be deemed to be the date of exercise (the “Date of Exercise”). 
 (ii) Cashless Exercise.
Notwithstanding the provisions of Section 2(a)(i)(3) above (requiring payment by wire transfer), the Company agrees that, if at the time of exercise hereof there is no effective registration statement registering, or the prospectus
contained therein is not available for the issuance of the Warrant Shares to the Holder, then Holder shall have the right at such time to exercise this Warrant in full or in part on a cashless basis, computed using the following formula: 

 

									
			X		=		 Y (A - B)
		
							A		

 Where: 

X = The number of Warrant Shares to be issued to the Holder pursuant to this cashless exercise; 

Y = The number of Warrant Shares in respect of which the net issue election is made; 

A = The Fair Market Value (as defined below) of one Warrant Share at the time the cashless exercise election is made; and 

B = The Exercise Price then in effect at the time of such exercise. 

The term “Fair Market Value” shall mean, on any given day: (A) if the class of Warrant Shares is exchange-traded, the average
of the closing sales prices per share of the class of Warrant Shares for the 

  
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ten (10) consecutive trading days ending on the day that is two (2) trading days prior to the applicable date of determination of Fair Market Value; or (B) if the class of Warrant
Shares is not listed or admitted to trading on any securities exchange but is regularly traded in any over-the-counter market, then the average of the bid and ask prices per share of the class of Warrant Shares for the ten (10) consecutive
trading days ending on the day that is two (2) trading days prior to the applicable date of determination of Fair Market Value; or (C) if the class of Warrant Shares is not traded as described in clauses (A) or (B), then the per share
fair market value of the class of Warrant Shares as determined in good faith by the Company’s Board of Directors. 
 (b) Delivery of
Certificates. Certificates for Warrant Shares purchased hereunder shall be transmitted by the transfer agent of the Company to the Holder by crediting the account of the Holder’s prime broker with the Depository Trust Company
(“DTC”) through its Deposit Withdrawal Agent Commission system if the Company is a participant in such system and such Warrant Shares are eligible for delivery in such a manner, and otherwise by physical delivery to the address
specified by the Holder in the Notice of Exercise within three Business Days from the delivery to the Company of the Notice of Exercise, surrender of this Warrant and payment of the aggregate Exercise Price as set forth above (the “Delivery
Period”). This Warrant shall be deemed to have been exercised on the date on which this Warrant is surrendered and payment of the Exercise Price is received by the Company. The Warrant Shares shall be deemed to have been issued, and Holder
or any other person so designated to be named therein shall be deemed to have become a holder of record of such shares for all purposes, as of the date on which all of the criteria described in the immediately preceding sentence have occurred,
irrespective of the date of delivery of such certificate or certificates, except that, if the date of such surrender and payment is a date when the stock transfer books of the Company are closed, such person shall be deemed to have become the holder
of such shares at the close of business on the next succeeding date on which the stock transfer books are open. If fewer than all of the Warrant Shares purchasable under the Warrant are purchased, the Company will, upon such partial exercise,
execute and deliver to the Holder a new Warrant (dated as of the Issue Date), in the same form and tenor as this Warrant, evidencing that portion of the Warrant not exercised. 

(c) Delivery of Electronic Shares. In lieu of delivering physical certificates representing the Warrant Shares issuable upon exercise
(provided that the transfer agent is participating in the DTC Fast Automated Securities Transfer program and provided further that the Holder provides the transfer agent with information required in order to issue such Warrant Shares to the Holder
electronically), upon the request of the Holder as set forth in the Notice of Exercise, but only if the Warrant Shares may be issued without restrictive legends, the Company shall cause its transfer agent to electronically transmit, within the
Delivery Period, the Warrant Shares issuable upon exercise to the Holder by crediting Holder’s account with DTC through its Deposit Withdrawal Agent Commission system. Any delivery not effected by electronic transmission shall be effected by
delivery of physical certificates. 
 (d) No Fractional Shares. If a fractional share of Warrant Shares would, but for the provisions
of this Section 2(d), be issuable upon exercise of the rights represented by this Warrant, the Company shall (i) round a half share or greater to be delivered to Holder up to the next whole share and (ii) round a less-than-half
share to be delivered to Holder down to the nearest whole share. 
 (e) No Charge to Holder Upon Issuance. The issuance of Warrant
Shares upon exercise of this Warrant shall be made without charge to Holder for any issuance tax in respect thereof or other cost incurred by the Company in connection with such exercise and the related issuance of Warrant Shares (other than any
transfer taxes resulting from the issuance of Warrant Shares to any person other than Holder). 

  
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 (f) Reservation of Shares. During the Exercise Period, the Company shall reserve and keep
available out of its authorized but unissued Common Stock such number of Warrant Shares issuable upon the full exercise of this Warrant. All Warrant Shares which are so issuable shall, when issued and upon the payment of the applicable Exercise
Price, be duly and validly issued, fully paid and nonassessable and free from all taxes, liens and charges and not subject to the pre-emptive rights of any holder of Common Stock or any other class or series of stock of the Company. During the
Exercise Period, the Company shall not take any action which would cause the number of authorized but unissued Common Stock to be less than the number of such shares required to be reserved hereunder for issuance upon exercise of this Warrant. 

(g) Limitations on Exercises. 

(i) Notwithstanding anything to the contrary contained in this Warrant, this Warrant shall not be exercisable by the Holder hereof to the
extent (but only to the extent) that after giving effect to such issuance after exercise, such Holder or any of its affiliates, as a result of such exercise, would beneficially own in excess of 4.99% (the “Maximum Percentage”) of
the number of shares of Common Stock outstanding immediately after giving effect to such issuance. To the extent the above limitation applies, the determination of whether this Warrant shall be exercisable (vis-à-vis other convertible,
exercisable or exchangeable securities owned by the Holder or any of its affiliates) and of which such securities shall be exercisable (as among all such securities owned by the Holder) shall, subject to such Maximum Percentage limitation, be
determined on the basis of the first submission to the Company for conversion, exercise or exchange (as the case may be). No prior inability to exercise this Warrant pursuant to this paragraph shall have any effect on the applicability of the
provisions of this paragraph with respect to any subsequent determination of exercisability. For the purposes of this paragraph, beneficial ownership and all determinations and calculations (including, without limitation, with respect to
calculations of percentage ownership) shall be determined in accordance with Section 13(d) of the Exchange Act. The limitations contained in this paragraph shall apply to a successor Holder of this Warrant. For any reason at any time, upon the
written or oral request of the Holder, the Company shall within one (1) Business Day confirm orally and in writing to the Holder the number of shares of Common Stock then outstanding, including by virtue of any prior conversion or exercise of
convertible or exercisable securities into Common Stock. The provisions of this Section 2(g)(i) may be waived by such Holder, at the election of such Holder, upon not less than 61 days’ prior notice to the Company, and the
provisions of this Section 2(g)(i) shall continue to apply until such 61st day (or such later date, as determined by such Holder, as may be specified in such notice of waiver). At 12:00 a.m., New York Time, on the 62nd day following the provision of the notice referred to in the preceding sentence, the exercise limitation set forth above shall expire. 

3. Adjustments in Certain Events. The number, class, and price of Warrant Shares for which this Warrant may be exercised are subject to adjustment from
time to time upon the happening of certain events as follows: 
 (a) Subdivisions, Combinations and Other Issuances. If the
outstanding shares of the Company’s Common Stock are divided into a greater number of shares, by forward stock split or otherwise, or a dividend in stock is paid on the Common Stock, then the number of shares of Warrant Shares for which the
Warrant is then exercisable will be proportionately increased and the Exercise Price will be proportionately reduced. Conversely, if the outstanding shares of Common Stock are combined into a smaller number of shares of Common Stock, by reverse
stock split or otherwise, then the number of Warrant Shares for which the Warrant is then exercisable will be proportionately reduced and the Exercise Price will be proportionately increased. The increases and reductions provided for in this
Section 3(a) will be made with the intent and, as nearly as practicable, the effect that neither the percentage of the total equity of the Company obtainable on exercise of the Warrants nor the price payable for such percentage upon such
exercise will be affected by any event described in this Section 3(a). 

  
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 (b) Merger, Consolidation, Reclassification, Reorganization, Etc. In case of any change in
the Common Stock through merger, consolidation, reclassification, reorganization, partial or complete liquidation, purchase of all or substantially all the assets of the Company, or other change in the capital structure of the Company, then, as a
condition of such change, lawful and adequate provision will be made so that the Holder will have the right thereafter to receive upon the exercise of the Warrant the kind and amount of shares of stock or other securities or property to which he
would have been entitled if, immediately prior to such event, he had held the number of Warrant Shares obtainable upon the exercise of the Warrant. In any such case, appropriate adjustment will be made in the application of the provisions set forth
herein with respect to the rights and interest thereafter of the Holder, to the end that the provisions set forth herein will thereafter be applicable, as nearly as reasonably may be, in relation to any shares of stock or other property thereafter
deliverable upon the exercise of the Warrant. The Company will not permit any change in its capital structure to occur unless the issuer of the shares of stock or other securities to be received by the Holder, if not the Company, agrees to be bound
by and comply with the provisions of this Warrant. 
 (c) If securities of the Company or securities of any subsidiary of the Company are
distributed pro rata to holders of Common Stock, such number of securities will be distributed to the Holder or its assignee upon exercise of its rights hereunder as such Holder or assignee would have been entitled to if this Warrant had been
exercised prior to the record date for such distribution. The provisions with respect to adjustment of the Common Stock provided in this Section 3 will also apply to the securities to which the Holder or its assignee is entitled under
this Section 3(c). 
 4. No Rights as a Stockholder. Nothing contained in this Agreement shall be construed as conferring upon the Holder
any rights whatsoever as a stockholder of the Company, either at law or in equity, including without limitation, or Holders the right to vote or to consent or to receive notice as a stockholder in respect of any meetings of stockholders for the
election of directors the right to receive dividends or any other matter. 
 5. Restrictions on Transfer; Legends. 

(a) Registration or Exemption Required. Assuming the accuracy of the representations and warranties of the Holder contained in herein,
this Warrant has been issued in a transaction exempt from the registration requirements of the Securities Act by virtue of Section 4(a)(2) of the Securities Act and Regulation D promulgated thereunder and exempt from state registration or
qualification under applicable state laws. The Holder acknowledges that he has been advised by the Company that this Warrant and the Warrant Shares issuable upon exercise thereof have not been registered under the Securities Act. Neither this
Warrant nor the Warrant Shares may be pledged, transferred, sold or assigned except pursuant to an effective registration statement or an exemption to the registration requirements of the Securities Act and applicable state laws. If, at the time of
the surrender of this Warrant in connection with any transfer of this Warrant, the transfer of this Warrant shall not be registered pursuant to an effective registration statement under the Securities Act and under applicable state securities or
blue sky laws, the Company may require, as a condition of allowing such transfer (i) that the Holder or transferee of this Warrant, as the case may be, furnish to the Company a written opinion of counsel (which opinion shall be in form,
substance and scope customary for opinions of counsel in comparable transactions) to the effect that such transfer may be made without registration under the Securities Act and under applicable state securities or blue sky laws, (ii) that the
holder or transferee execute and deliver to the Company an investment letter in form and substance acceptable to the Company and (iii) that the transferee be an “accredited investor” as defined in Rule 501(a) promulgated under the
Securities Act or a “qualified institutional buyer” as defined in Rule 144A(a) under the Securities Act. 

  
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 (b) Representations of Holder. The Holder represents and warrants that he has acquired
this Warrant and will acquire the Warrant Shares for his own account for investment and not with a view to the sale or distribution thereof or the granting of any participation therein, and that he has no present intention of distributing or selling
to others any of such interest or granting any participation therein. The Holder acknowledges that the Warrant and Warrant Shares must be held indefinitely unless a subsequent disposition thereof is registered under the Securities Act or registered
or qualified under any applicable state securities or “blue-sky” laws or is exempt from registration and/or qualification. The Holder has no need for liquidity in its investment in the Company, and is able to bear the economic risk of such
investment for an indefinite period and to afford a complete loss thereof. The Holder is an “accredited investor” as such term is defined in Rule 501 (the provisions of which are known to the Holder) promulgated under the Act. 

(c) Restrictive Legend. The Holder understands that until such time as the Warrant Shares have been registered under the Securities
Act, or otherwise may be sold pursuant to Rule 144 under the Securities Act or an exemption from registration under the Securities Act without any restriction as to the number of securities as of a particular date that can then be immediately sold,
this Warrant and the Warrant Shares, as applicable, shall bear a restrictive legend in substantially the form set forth on the cover page of this Warrant (and a stop-transfer order may be placed against transfer of the certificates for such
securities). 
 (d) Disposition of Warrant or Warrant Shares. With respect to any offer, sale or other disposition of this
Warrant or any Warrant Shares prior to registration of such Warrant Shares, the Holder agrees to give written notice to the Company prior thereto, describing briefly the manner thereof, together with evidence, reasonably satisfactory to the Company
(which shall include such representation of the transferee regarding investment intent as the Company may request, to the effect that such offer, sale or other disposition may be effected without registration or qualification (under the Act as then
in effect or any federal or state securities law then in effect) of this Warrant or such Warrant Shares and indicating whether or not under the Securities Act certificates for this Warrant or Warrant Shares to be sold or otherwise disposed of
require any restrictive legend as to applicable restrictions on transferability in order to ensure compliance with such law. Upon receiving such written notice and reasonably satisfactory evidence, the Company, as promptly as practicable but no
later than seven (7) days after receipt of the written notice, shall notify the Holder that the Holder may sell or otherwise dispose of this Warrant or Warrant Shares, all in accordance with the terms of the notice delivered to the
Company. If the Company determines that the evidence is not reasonably satisfactory to the Company, the Company shall so notify the Holder promptly with details thereof after such determination has been made. Notwithstanding the foregoing,
any Warrant Shares may be offered, sold or otherwise disposed of in accordance with Rule 144 under the Act and in compliance with the applicable statutory resale restrictions imposed by state securities laws, provided that the Company shall
have been furnished with such information as the Company may reasonably request to provide a reasonable assurance that the provisions of Rule 144 and the applicable resale restrictions imposed by state securities laws have been
satisfied. Each certificate representing this Warrant or the Warrant Shares thus transferred shall bear a legend as to the applicable restrictions on transferability in order to ensure compliance with such laws, unless pursuant to an opinion of
counsel for the Holder, such legend is not required in order to ensure compliance with such laws. The Company may issue stop transfer instructions to its transfer agent in connection with such restrictions. 

(e) Removal of Restrictive Legends. The certificates evidencing the Warrant Shares shall not contain any legend restricting the
transfer thereof: (A) while a registration statement covering the sale or resale of the Warrant Shares is effective under the Securities Act and such legend removal is permitted 

  
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under applicable securities laws (including compliance with the prospectus delivery requirements of the Securities Act), or (B) following any sale of such Warrant Shares pursuant to Rule
144, or (C) if such Warrant Shares are eligible for sale under Rule 144(b)(1), or (D) if such legend is not required under applicable requirements of the Securities Act (including judicial interpretations and pronouncements issued by
the staff of the Commission) and the Company shall have received an opinion of counsel to the Holder in form reasonably acceptable to the Company to such effect (collectively, the “Unrestricted Conditions”). The Company shall cause
its counsel to issue a legal opinion to its transfer agent if required by the transfer agent to effect the issuance of the Warrant Shares, as applicable, without a restrictive legend or removal of the legend hereunder. The Company agrees that at
such time as the Unrestricted Conditions are met, it will, no later than three (3) Trading Days following the delivery by the Holder to the Company or the transfer agent of a certificate representing Warrant Shares, issued with a restrictive
legend, deliver or cause to be delivered to such Holder a certificate (or electronic transfer) representing such Warrant Shares that is free from all restrictive and other legends. 

6. Notices; Adjustments. 
 (i) All
notices required or permitted hereunder shall be in writing and shall be deemed effectively given: (i) upon personal delivery to the party to be notified; (ii) when sent by confirmed electronic mail or facsimile if sent during normal
business hours of the recipient, and if not, then on the next business day; (iii) two (2) Business Days after having been sent by registered or certified mail, return receipt requested, postage prepaid; or (iv) one (1) Business
Day after deposit with a nationally recognized overnight courier, specifying next day delivery, with written verification of receipt. All communications shall be sent to the Company or to Holder, as applicable, at the respective addresses set forth
on the signature page to the Purchase Agreement or at such other address(es) as they may designate, respectively, by ten (10) days advance written notice to the other party hereto. 

(ii) Upon the occurrence of any adjustments pursuant to Sections 3(a) or 3(c) hereof, the Company at its expense shall, as promptly as
reasonably practicable but in any event not later than 10 days thereafter, compute such adjustment in accordance with the terms hereof and furnish to Holder a certificate setting forth such adjustment and showing in detail the facts upon which such
adjustment is based. In the event of any taking by the Company of a record of the holders of any class of securities for the purpose of determining the holders thereof who are entitled to receive any dividend or other distribution, the Company shall
mail to the Holder, at least ten (10) days prior to the date on which any such record is to be taken for the purpose of such dividend or distribution, a notice specifying such date. In the event of any voluntary dissolution, liquidation or
winding up of the Company, the Company shall mail to the Holder, at least ten (10) days prior to the date of the occurrence of any such event, a notice specifying such date. If the approval of any stockholders of the Company shall be required
in connection with any transaction contemplated by Section 3(b) above, then, the Company shall cause to be mailed to the Holder at least 10 calendar days prior to the applicable record or effective date hereinafter specified, a notice
stating the date on which such transaction 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 transaction. Notwithstanding the immediately preceding sentences, however, if the date on which the Company is obliged to provide notice hereunder to the Holders is prior to a public announcement relating
to the events set forth and on such date the Company’s securities are traded or quoted on any recognized national securities exchange or quotation system, then such notice shall be provided to each Holder simultaneously with the notice provided
to the Company’s common stockholders. Failure to give such notice, or any defect therein, shall not, however, affect the legality or validity of any such action. 

7. Non-Circumvention. The Company hereby covenants and agrees that the Company will not, by amendment of its certificate of incorporation, bylaws or
through any reorganization, transfer of assets, 

  
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consolidation, merger, scheme of arrangement, dissolution, issue or sale of securities, or any other action, avoid or seek to avoid the observance or performance of any of the terms of this
Warrant, and will at all times in good faith carry out all the provisions of this Warrant and take all action as may be reasonably required to protect the rights of the Holder. 

8. Governing Law. This Warrant shall be governed by and construed in accordance with the laws of the State of New York, without regard to conflict of
law principles, and notwithstanding the fact that one or more counterparts hereof may be executed outside of the state, or one or more of the obligations of the parties hereunder are to be performed outside of the state. 

9. Loss, Theft, Destruction or Mutilation of Warrant. Upon receipt by the Company of evidence reasonably satisfactory to it of the loss, theft,
destruction or mutilation of this Warrant, and, in the case of loss, theft, or destruction, of indemnity reasonably satisfactory to it, and, if mutilated, upon surrender and cancellation of this Warrant, the Company will execute and deliver a new
Warrant, having terms and conditions identical to this Warrant, in lieu hereof. 
 10. Modification and Waiver of Warrants. Any term of this Warrant
may be amended, waived, discharged or terminated (either generally or in a particular instance and either retroactively or prospectively) with the written consent of the Company and the holders of the Warrants representing at least 50.1% of the
number of shares of Common Stock then subject to outstanding Warrants issued pursuant to the Purchase Agreement. Notwithstanding the foregoing, (a) this Warrant may be amended and the observance of any term hereunder may be waived without the
written consent of the Holder only in a manner which applies to all Warrants issued pursuant to the Purchase Agreement in the same fashion and (b) other than in connection with a transaction contemplated by Section 3 of this
Warrant, the number of Warrant Shares subject to this Warrant and the Exercise Price of this Warrant may not be amended, and the right to exercise this Warrant may not be waived, without the written consent of the Holder. The Company shall give
prompt written notice to the Holder of any amendment hereof or waiver hereunder that was effected without the Holder’s written consent. No waivers of any term, condition or provision of this Warrant, in any one or more instances, shall be
deemed to be, or construed as, a further or continuing waiver of any such term, condition or provision. 
 11. Successors. This Warrant shall be
binding and inure to the benefit of the parties and their respective successors and assigns hereunder; provided that this Warrant may be assigned by Holder only in compliance with the conditions specified in and in accordance with all of the terms
of this Warrant. This Warrant does not create and shall not be construed as creating any rights enforceable by any other person or corporation. 
 12.
Headings. The headings used in this Warrant are used for convenience only and are not to be considered in construing or interpreting this Warrant. 

13. Saturdays, Sundays, Holidays. If the last or appointed day for the taking of any action or the expiration of any right required or granted herein
shall be a Saturday or a Sunday or shall be a legal holiday in the State of New York, then such action may be taken or such right may be exercised on the next succeeding day not a legal holiday. 

14. Severability. If any provision of this Warrant shall be held to be invalid or unenforceable, such invalidity or unenforceability shall not affect
any other provisions of this Warrant. 
 15. Execution and Counterparts. This Warrant may be executed in any number of counterparts, each of which
when so executed and delivered shall be deemed an original, and such counterparts together shall constitute only one instrument. Any one of such counterparts shall be sufficient for the purpose of proving the existence and terms of this Warrant, and
no party shall be required to produce an original or all of such counterparts in making such proof. 

  
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 16. Acceptance. Receipt of this Warrant by the Holder shall constitute acceptance of and agreement to all
of the terms and conditions contained herein. 
 Signature page to Common Stock Purchase Warrant follows. 

  
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 IN WITNESS WHEREOF, the Company has caused this Common Stock Purchase Warrant to be executed and
delivered as of the Issue Date by an officer thereunto duly authorized. 
  

					
	AUTHENTIDATE HOLDING CORP.
		
	By:		  

			Name:		Ian C. Bonnet
			Title:		President and Chief Executive Officer
	
	Address for Notice:
	
	300 Connell Drive, 5th Floor
	Berkeley Heights, NJ 07922

  
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 ATTACHMENT I 

NOTICE OF EXERCISE 
  

	TO:	AUTHENTIDATE HOLDING CORP. 

 Attention: Chief Financial Officer 

The undersigned hereby elects to purchase, pursuant to the provisions of the Common Stock Warrant issued by Authentidate Holding Corp., and
held by the undersigned, the original of which is attached hereto, and (check the applicable box): 
  

	 ̈	Tenders herewith payment of the Exercise Price in the form of cash, via wire transfer of immediately available funds, in the amount of $         for
                 shares of Common Stock. 

  

	 ̈	Elects the cashless exercise option pursuant to this Warrant, and accordingly requests delivery of                  shares of Common Stock,
net, pursuant to the following calculation: 

  
 X = Y
(A-B)/A 
 (            ) =
(            )[(            ) -
(            )]/(            ) 

Where 
 X = The number of shares
of Common Stock to be issued to the Holder pursuant to this cashless exercise; 
 Y = The number of shares of Common Stock in respect of
which the net issue election is made; 
 A = The Fair Market Value of one share of Common Stock, as calculated per the terms of the Warrant;
and 
 B = The Exercise Price then in effect as of the date of exercise. 

 

	 ̈	If this box is checked, as long as the Company’s transfer agent participates in the DTC Fast Automated Securities Transfer program (“FAST”), and except as otherwise provided in the next following
sentence, the Company shall effect delivery of the shares of Common Stock to the Holder by crediting to the account of the Holder or its nominee at DTC (as specified in this Exercise Notice) with the number of shares of Common Stock required to be
delivered. In the event that the Company’s transfer agent is not a participant in FAST, or if the shares of Common Stock are not otherwise eligible for delivery through FAST, the Company shall effect delivery of the shares of Common Stock by
delivering to Holder or its nominee physical certificates representing such shares. 

 Information for Delivery of uncertificated Shares by
DWAC: 
  

			
	Account Number:		  

	Account Name:		  

	DTC Number:		  

  ̈ If this box is checked, the Holder requests delivery of
physical certificates representing the Warrant Shares and requests that such certificates be delivered to the following address: 
  

					
	Name:		  
		
			 (please typewrite or print in block letters)
		

  

					
	Address:		  
		

  

					
	Tax I.D. No. or Social Security No.:		  
		

 If such number of shares shall not be all the shares purchasable upon the exercise of the Warrants evidenced
by this Warrant, a new warrant certificate for the balance of such Warrants remaining unexercised shall be registered in the name of and delivered to: 
  

					
	Name:		  
		
			 (please typewrite or print in block letters)
		

  

					
	Address:		  
		

  

					
	Tax I.D. No. or Social Security No.:		  
		

  

			
	HOLDER:
	
	  

	Name:
	Title:
		
	Date:		  

  
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 ATTACHMENT II 

[FORM OF ASSIGNMENT] 
 (To be
executed by the registered holder if such holder 
 desires to transfer the Warrant Certificate.) 

FOR VALUE RECEIVED, the undersigned Holder of this Warrant hereby sells, assigns and transfers the foregoing Warrant and all rights evidenced
thereby to 
  

					
	Name:				  

					(Please Print)
			
	Address:				  

					(Please Print)
			
	Tax ID No.:				  

 and does hereby irrevocably constitute and appoint             ,
Attorney, to transfer the within Warrant Certificate on the books of Authentidate Holding Corp., Inc., with full power of substitution. 
 NOTE: The
signature to this Assignment Form must correspond with the name as it appears on the face of the Warrant, without alteration or enlargement or any change whatever. Officers of corporations and those acting in a fiduciary or other representative
capacity should file proper evidence of authority to assign the foregoing Warrant. 
  

											
	Dated:		  
						Holder:		  

					
									  

									(Print Name)
									  

									  

									(Signature)

  

	
	STATE OF                 )
	COUNTY OF             ) ss:

 On this      day of
            , before me personally came             , to me known, who being by me duly sworn, did depose and say that he resides
at                     , that he is the holder of the foregoing instrument and that he executed such instrument and duly acknowledged to me that he
executed the same. 
  

	
	  

	Notary Public

  
 - 13 -EX-10.1

 Exhibit 10.1 

NOTE AMENDMENT AGREEMENT 

This NOTE AMENDMENT AGREEMENT (this “Amendment”), dated as of April 2, 2015 (the “Effective Date”), is
entered into by and among AUTHENTIDATE HOLDING CORP., a Delaware corporation (the “Company”) and VER 83, LL C the holder (the “Holder”) of the Prior Note (as such term is defined below). 

WHEREAS, the Company has issued to the Holder a promissory note in the aggregate principal amount of $950,000 (the “Prior
Note”) with an initial maturity date of March 19, 2015 (the “Initial Maturity Date”); 
 WHEREAS, the Company
seeks Holder’s consent to modify and extend the Initial Maturity Date of the Prior Note to the date specified hereinafter and, in consideration thereof, the Company and the Holder have agreed to the additional terms set forth herein. 

NOW, THEREFORE, for valuable consideration, the receipt and sufficiency of which are hereby acknowledged the Company and the Holder agree as
follows: 
 SECTION 1. Definitions. As used herein, terms that are defined herein shall have the meanings as so defined, and
terms not so defined shall have the meanings as set forth in the Prior Note. 
 SECTION 2. Amendments to the Prior Note. The
Prior Note shall be amended as follows: 
 (a) The Prior Note is hereby amended to modify the definition of the term “Maturity
Date” such that from and after the Effective Date of this Amendment, the term “Maturity Date” shall mean July 2, 2015. 

(b) Section 3 of the Prior Note is hereby deleted in in its entirety and all references elsewhere in the Prior Note to the term
“Accelerated Payment Date” are also hereby deleted from the Prior Note. 
 SECTION 3. Exchange Right. 

(a) The Company hereby agrees that, for as long the Prior Note remains outstanding, the Holder shall have the right, in accordance with the
terms hereof, to exchange the principal amount of the Prior Note (and unpaid interest thereon) into the securities of the Company (the “New Securities”) sold in the Next Financing (defined below). The Holder may exchange all, but
not less than all, of the principal amount of the Prior Note, and any accrued and unpaid interest thereon, for the New Securities in the Next Financing upon the same price and other terms and conditions as pertains to the Next Financing and shall be
required to execute such agreements pertaining to the Next Financing as the Company and the other investors participating in the Next Financing shall execute. In calculating the number of New Securities to be issued to the Holder, such number shall
be rounded down to the nearest whole number. The Company shall not issue any fractional New Securities under any circumstances, but shall pay to the Holder any cash amounts in respect of the value of any fractional New Securities that may have been
issuable in the absence of the aforementioned prohibition. As used herein, the term “Next Financing” shall mean the closing of a sale of equity or debt securities by the Company, or series of closings, as part of the same
transaction, of equity or debt securities within a period of three months, in the gross amount of at least $2,000,000, excluding any transaction that is an Exempt Issuance, as defined below (the “Next Financing”). The Holder may
exercise this right at any time and from time to time prior to the Maturity Date upon no less than 5 days’ written notice by the Holder to the Company. 

(b) Mechanics. To exchange the Prior Note into the Next Financing, upon no less than 5 days’ written notice by the Holder to the
Company, the Holder shall send by facsimile (or otherwise deliver) a copy of a notice of exchange. The Holder shall surrender or cause to be surrendered the Prior 

  
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Note as soon as practicable thereafter to the Company, and pay any transfer taxes or other applicable taxes or duties, if required. The Company shall not be obligated to issue New Securities
unless either the Prior Note is delivered to the Company as provided above, or the Holder notifies the Company that the Prior Note has been lost, stolen or destroyed and delivers to the Company an affidavit of loss in a form reasonably acceptable to
the Company. As promptly as practicable on or after the closing of the Next Financing, the Company shall issue and deliver to the Holder such number of securities of the Company issuable to it in the Next Financing. The Holder is not entitled to any
rights of a holder of New Securities until the Prior Note has been surrendered and exchanged for such New Securities in the Next Financing and the closing of such Next Financing has occurred. Upon such event, the rights of the Holder of the Prior
Note as the Holder hereof shall cease, and the person or persons entitled to receive the New Securities shall be deemed to be a holder of record of such New Securities. 

(c) As used herein, the term “Exempt Issuance” means the issuance of (i) any securities of the Company to employees,
officers, or directors of the Company or other eligible person pursuant to any stock or option plan duly adopted for such purpose, by a majority of the non-employee members of the Board of Directors or a majority of the members of a committee of
non-employee directors established for such purpose (for purposes of clarity, the issuance of shares of Common Stock upon exercise of options or vesting of restricted stock units granted pursuant to such a Company plan subsequent to the date hereof
shall also be an Exempt Issuance), (ii) securities upon the exercise or exchange of or conversion of any securities of the Company issued and outstanding as of the Effective Date of this Agreement (including shares of common stock that the
Company may issue pursuant to the presently outstanding shares of Series D Preferred Stock in lieu of cash dividends thereon), (iii) securities issued pursuant to mergers, acquisitions or strategic transactions approved by a majority of the
disinterested directors of the Company, provided that any such issuance shall only be to a person (or to the equityholders of a person) which is, itself or through its subsidiaries, an operating company or an owner of an asset in a business
synergistic with the business of the Company and shall provide to the Company additional benefits in addition to the investment of funds, but shall not include a transaction in which the Company is issuing securities primarily for the purpose of
raising capital or to an entity whose primary business is investing in securities, (iv) shares of Common Stock (or securities convertible into or exercisable or exchangeable for shares of Common Stock) which may be issued to consultants,
vendors, lessors, distributors or similar persons, to the Company as consideration for services or assets provided to the Company (and the shares of Common Stock which may be issued upon exercise or conversion of convertible securities issued to the
class persons specified in this clause), and (v) shares of Common Stock or other securities issued in connection with any stock split, stock dividend or recapitalization of the Company. 

SECTION 4. Issuance of Warrants. In consideration of (i) the prospective waiver previously granted by the Holder of any
potential event of default under the Prior Note arising from the Company’s nonpayment of the principal thereon and (ii) the amendments to the Prior Note and the other agreements set forth herein, the Company agrees to issue to the Holder,
on the Effective Date, warrants to purchase an aggregate of 3,166,667 shares of common stock of the Company (the “Additional Warrants”). The Additional Warrants shall be exercisable for a period of 54 months commencing six months
following the date of issuance, at an exercise price equal to $0.31 per share, and otherwise shall be in the form attached as Annex A to this Amendment. 

SECTION 5. No Defaults. The Company and Holder, by execution of this Amendment, each hereby represent and warrant to the other,
that as of the date hereof, no Event of Default has occurred under the Prior Note and no Event of Default exists or is continuing with respect to the Prior Note. 

SECTION 6. Effect of Amendment. Upon the Effective Date of this Amendment, (i) the applicable portions of this Amendment
shall be a part of the Prior Note and the Prior Note shall incorporate the provisions of Section 2 hereof, and (ii) each reference in the Prior Note to “this Note”, “this Agreement”, “hereof”,
“hereunder”, or words of like import, and each reference in any other document or agreement to the Prior Note shall mean and be a reference to the Prior Note as amended hereby. Except as expressly amended hereby, the Prior Note, as amended
hereby, shall remain in full force and effect and is hereby ratified and confirmed by the parties hereto. 

  
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 SECTION 7. Consent. Each of the Holder and the Company hereby consents to the terms
of the amendments to the Prior Note contained in this Amendment. This Amendment is not intended to serve as, and shall not be construed by operation of law or otherwise, as a novation of the Prior Note. 

SECTION 8. Representations and Warranties. Each of the parties hereto represents and warrants that it is duly incorporated or
otherwise organized, validly existing and (to the extent applicable) in good standing under the laws of the jurisdiction of its formation, that it has all requisite power and authority to enter into this Amendment and that this Amendment has been
duly authorized, executed and delivered by it and constitutes its legal, valid and binding obligation. The Holder further represents and warrants that (i) it is the beneficial or record owner of the Prior Note originally issued to it, free and
clear of any and all pledges, liens, security interests, mortgage, claims, charges, restrictions, options, title defects or encumbrances; (ii) such Holder has not assigned any interest in the Prior Note; (iii) it is an “accredited
investor” as that term is defined in Regulation D promulgated under the Securities Act of 1933; (iv) it is acquiring the Extension Warrants (and the shares of the Company’s common stock issuable upon exercise thereof) for its own
account for investment and not with a view toward distribution in a manner which would violate the Securities Act of 1933 or any applicable state securities laws; and (v) it is aware that the Extension Warrants (and the shares of the
Company’s common stock issuable upon exercise thereof) are “restricted securities” under the federal securities laws and must be held indefinitely unless subsequently registered under the Securities Act of 1933 and under applicable
state securities laws or an exemption from such registration is available. 
 SECTION 9. Governing Law; Miscellaneous. 

(a) This Amendment shall be governed by and construed in accordance with the laws of the State of New York without reference to principles of
conflicts of law. Headings used herein are for convenience of reference only and shall not affect the meaning of this Amendment. This Amendment may be executed in any number of counterparts, and by the parties hereto on separate counterparts, each
of which shall be an original and all of which taken together shall constitute one and the same agreement. Executed counterparts may be delivered via facsimile or other means of electronic transmission. 

(b) Each Holder hereby represents that it is the owner of the Prior Note issued to it and that such Prior Note has not been assigned, pledged
or otherwise transferred. Each Holder agrees that this Amendment shall be affixed by each Holder to its Prior Note and become a part thereof. 

(c) This Amendment contains the entire agreement and understanding of the parties with respect to its subject matter and supersedes all prior
arrangements and understandings between the parties, either written or oral, with respect to its subject matter. This Amendment may not be amended or modified except in the manner for amendment of the Prior Note as set forth therein. The observance
of any term of this Amendment may be waived (either generally or in a particular instance and either retroactively or prospectively) in the manner set forth in the Prior Note. The failure of any party at any time or times to require performance of
any provision hereof shall in no manner affect the rights at a later time to enforce the same. No waivers of or exceptions to any term, condition, or provision of this Amendment, in any one or more instances, shall be deemed to be, or construed as,
a further or continuing waiver of any such term, condition, or provision. This Amendment shall be binding upon and shall inure to the benefit of and be binding upon the parties hereto and their respective successors and assigns. 

(d) Each Holder has been advised and had the opportunity to consult with an attorney or other advisor prior to executing this Amendment. The
undersigned Holder understands, confirms and agrees that counsel to the Company is not acting as counsel to the Holder and the undersigned Holder has not relied upon any legal advice except as provided by its own counsel. 

  
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 WITNESS WHEREOF, the parties have caused this Amendment to be executed by their respective
duly authorized representatives, as of the date first set forth above 
  

			
	AUTHENTIDATE HOLDING CORP.
		
	By:		 /s/ Ian C. Bonnet

	Name:		Ian C. Bonnet
	Title:		Chief Executive Officer

 ACCEPTED AND AGREED: 
  

			
	HOLDER:
	
	VER 83, LLC
		
	By:		 /s/ Douglas B. Luce

	Name:		Douglas B. Luce
	Title:		
	
	Principal Amount of Prior Note: $950,000

  
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