Document:

EX-10.18

 Exhibit 10.18 

FIRST AMENDMENT TO LEASE 

THIS FIRST AMENDMENT TO LEASE (“First-Amendment”), dated as of the 27th day of May, 2015 (the “Effective Date”), is
between CLPF-475 BRANNAN STREET, L.P., a Delaware limited partnership (“Landlord”) and FASTLY, INC., a Delaware corporation (“Tenant”). 

R E C I T A L S 

A. Landlord and Tenant entered into that certain Office Lease dated August 22, 2014 (the “Lease”), pursuant to which
Landlord leased unto Tenant and Tenant leased from Landlord approximately 47,083 rentable square feet of office space designated as Suites 200, 300 and 320 (the “Existing Premises”) located on the second and third floors of the building
commonly known as 475 Brannan Street, San Francisco, California (the “Building”), as more particularly described in the Lease. 

B. Tenant has exercised its option to expand its premises to include additional space located on the third floor of the Building which
contains approximately 18,097 rentable square feet of space (“Suite 330”), as depicted on Exhibit A-4 attached hereto and incorporated herein by this reference. Landlord agrees to so expand
Tenant’s premises upon the terms and conditions outlined in this Amendment. 

A G R E E M E N T 

NOW, THEREFORE, for and in consideration of the facts mentioned above, the mutual promises set forth below and other good and valuable
consideration, the sufficiency and receipt of which is hereby acknowledged, the parties hereto do agree as follows: 
 1. Effective
Date. This First Amendment shall be effective as of the Effective Date. Except as otherwise set forth herein, the amendments to the Lease outlined below regarding the expansion of Tenant’s premises to include Suite 330 shall be effective on
the date Landlord delivers Suite 330 to Tenant as set forth in Paragraph 7 (the “Suite 330 Expansion Date”), which shall not occur prior to August 21, 2015. 

2. Capitalized Terms. All capitalized terms used in this First Amendment which are not defined herein shall have the meanings for such
terms which are set forth in the Lease. 
 3. Premises. As of the Suite 330 Expansion Date, Suite 330, which contains approximately
18,097 rentable square feet of space, shall become part of the Premises, the description of the Premises set forth in the Summary of Lease Terms shall be modified to include 

 Suite 330, the Rentable Area of the Premises set forth in the Summary of Lease Terms shall be modified to
include the rentable square footage of Suite 330, and Exhibits A-1, A-2 and A-3 to the Lease shall be supplemented with Exhibit A-4 attached hereto and incorporated into the Lease by this reference and thereafter all references in the Lease to Exhibit A shall be deemed to also refer to Exhibit A-4. The
term Tenant’s lease of Suite 330 shall be coterminous with that of the Existing Premises, and expire on the Expiration Date. In addition, as of the Suite 330 Expansion Date, the description of the Premises set forth in the Summary of Lease
Terms shall be deleted and replaced with the following: 
  

					
	 “D.
	 	Floor on which Premises are situated:	  	Second Floor: Suite 200
		 	[Paragraph 1(f)]	  	Third Floor: Suites 300, 320 and 330”

 Further, as of the Suite 330 Expansion Date, the Rentable area of the Premises set forth in the Summary of Lease Terms shall
be deleted and replaced with the following: 
  

					
	 “E.
	 	Rentable area of the Premises:	  	65,180 rentable square feet”
		 	[Paragraph 1(f)]	  	

 4. Basic Monthly Rental. Tenant shall continue to pay Basic Monthly Rental for the Premises as
set forth in the Lease. Beginning on the date that is the earlier of (i) seventy-five (75) days after the Suite 330 Expansion Date; or (ii) the date Tenant first commences business operations from Suite 330 (the “Suite 330 Rent
Commencement Date”), Tenant shall also pay Basic Monthly Rental for Suite 330 calculated at the same annual rate per square foot applicable to the Premises as of the Suite 330 Rent Commencement Date, and Basic Monthly Rental for Suite 330 shall
increase thereafter at the same rate as Monthly Base Rent for the Premises increases. 
 5. Suite 330 Expansion Memorandum.
Landlord and Tenant hereby agree to confirm the actual Suite 330 Expansion Date, Suite 330 Rent Commencement Date and the Schedule of Basic Monthly Rental applicable to Suite 330 promptly after the Suite 330 Rent Commencement Date is
established, by executing and delivering to each other counterparts of a Suite 330 Expansion Memorandum in the form of Exhibit D-1 attached hereto. Notwithstanding the foregoing, the Suite 330 Expansion
Date, the Suite 330 Rent Commencement Date and Tenant’s obligation to pay Basic Monthly Rental for Suite 330 shall not be dependent on whether or not such memorandum is executed. 

6. Tenant’s Suite 330 Percentage Share. Beginning on the Suite 330 Rent Commencement Date, in addition to paying
Tenant’s Percentage Share as set in forth in Section F of the Summary of Lease Terms, Tenant shall also pay to Landlord, as additional rent, 7.40% (the “Suite 330 Percentage Share”) of: (i) the amount, if any, by which Operating
Expenses paid or incurred by Landlord in any calendar year subsequent to calendar year 2016 (the “Suite 330 

 Base Year”) exceed the amount of Operating Expense allocable to the Suite 330 Base Year; and
(ii) the amount, if any by which Real Property Taxes paid or incurred by Landlord in any calendar year subsequent to the Suite 330 Base Year exceed the amount of Real Property Taxes allocable to the Suite 330 Base Year. The Suite 330 Percentage
Share shall be payable in the same manner as, and subject to the provisions applicable to, Tenant’s Proportionate Share pursuant to Paragraph 4 of the Lease. 

7. Delivery and Condition of Suite 330. Landlord shall deliver possession of Suite 330 to Tenant vacant and broom-clean, with the
existing building systems in good working order, but otherwise in its “as-is” condition. Tenant acknowledges and agrees that neither Landlord or any representative of Landlord has made any
representation or warranty with respect to the condition of Suite 330. If Landlord fails to deliver Suite 330 to Tenant by March 1, 2016 (“Target Date”) (i) the Lease shall not be void or voidable except as set forth below, and
(ii) Tenant shall be entitled to a credit against Basic Monthly Rental of one (1) day of Basic Monthly Rental applicable to Suite 330 for every day that delivery of possession of Suite 330 occurs after the Target Date. If Landlord fails to
deliver possession of Suite 330 to Tenant on or before September 1, 2016, and does not cure such failure within fifteen (15) days of Tenant’s written notice thereof (“Tenant’s Delivery Notice”), Tenant shall have the
option to terminate the Lease with respect to Suite 330 upon written notice to Landlord within fifteen (15) days of the expiration of Tenant’s Delivery Notice. If Tenant does not exercise its option to terminate the Lease with respect to
Suite 330 under this Paragraph 7, this Amendment thereafter shall not be void or voidable and no obligation of Tenant shall be affected by Landlord’s failure to deliver Suite 330. Regardless of whether Tenant exercises its option to terminate
under this Paragraph 7, in no event shall Landlord be liable to Tenant for any loss or damage resulting from Landlord’s failure to deliver Suite 330. 

8. Suite 330 Improvements. Landlord and Tenant agree to the provisions set forth in the work letter annexed hereto as Exhibit “C-1” (“Work Letter”). Tenant agrees to construct any Suite 330 Improvements described in the Work Letter upon and subject to the provisions thereof. 

9. Accessibility Disclosure. Pursuant to California Civil Code 1938, Landlord hereby advises Tenant that Suite 330 has not
undergone inspection by a Certified Access Specialist and Tenant hereby acknowledges that Suite 330 has not been certified to meet all construction related accessibility standards pursuant to Civil Code Section 55.53. 

10. Additional Security. Upon execution of this First Amendment, Tenant shall deliver to Landlord an amount equal to $671,941.56,
to be held by Landlord as additional security for Tenant’s faithful performance of all of the terms, covenants, conditions, and obligations required to be performed by Tenant under the Lease (the “Additional Security Deposit”). The
amount of the Additional Security Deposit shall be reduced on the last day of the twelfth (12th), twenty-fourth (24th), thirty-sixth (36th) and forty-eighth (48th) full calendar months after the Suite 330 Rent 

 Commencement Date, respectively, in the amount of $134,388.31 each (the “Reduction Amount”) from
the amount then held by Landlord, so long as no Event of Default by Tenant under the Lease then currently exists beyond any applicable notice and cure periods as of the date of the relevant reduction of the Additional Security Deposit or the date
any excess Additional Security Deposit is to be returned pursuant hereto. Within ten (10) business days following the date of the relevant reduction of the Additional Security Deposit, Landlord shall pay to Tenant any excess funds held by
Landlord over the required amount of the Additional Security Deposit, as so reduced. If such Reduction Amount is not timely paid by Landlord, Tenant shall provide Landlord written notice that the Reduction Amount has not been timey paid. Landlord
shall then have ten (10) business days to either pay the Reduction Amount or to provide Tenant written notice that Landlord disputes that a Reduction Amount payment is due (the “Notice of Dispute”). Landlord and Tenant acknowledge and
agree that a Notice of Dispute may only be delivered to Tenant by Landlord in the event a dispute arises in connection with a default by Tenant beyond the applicable notice and cure periods. If within such ten (10) business day period Landlord
fails to either pay the Reduction Amount or deliver Tenant a Notice of Dispute and if the Landlord is other than CLPF-475 Brannan Street, L.P., Tenant shall have the right to offset that particular Reduction
Amount payment amount against any Rental next due and owing. The Additional Security Deposit shall be held by Landlord as security for the performance by Tenant of all of the covenants of the Lease to be performed by Tenant and Tenant shall not be
entitled to interest thereon. The Additional Security Deposit is not an advance rent deposit, an advance payment of any other kind, or a measure of Landlord’s damages in any case of Tenant’s default. If Tenant fails to perform any of the
covenants of the Lease to be performed by Tenant after the expiration of all applicable notice and cure periods, including without limitation the provisions relating to payment of rent, the removal of property at the end of the Term, and the repair
of damage to the Premises caused by Tenant, and the cleaning of the Premises upon termination of the tenancy created hereby, then Landlord shall have the right, but no obligation, to apply the Additional Security Deposit, or so much thereof as may
be necessary, for the payment of any rent or any other sum in default and/or to cure any other such failure by Tenant. If Landlord applies the Security Deposit or any part thereof for payment of such amounts or to cure any such other failure by
Tenant during the Term, then Tenant shall, within ten (10) days after receipt of Landlord’s written notice thereof, pay to Landlord the sum necessary to restore the Additional Security Deposit to the full amount then required by this
paragraph, taking into account the Reduction Amount. Landlord’s obligations with respect to the Additional Security Deposit are those of a debtor and not a trustee. Landlord shall not be required to maintain the Additional Security Deposit
separate and apart from Landlord’s general or other funds and Landlord may commingle the Additional Security Deposit with any of Landlord’s general or other funds. Upon termination of the original Landlord’s or any successor
owner’s interest in the Premises or the Building, the original Landlord or such successor owner shall be released from further liability with respect to the Additional Security Deposit upon the original Landlord’s or such successor
owner’s complying with California Civil Code Section 1950.7 and Landlord’s transfer of the Additional Security Deposit to such successor owner or the credit of the amount of the Additional Security Deposit to such successor owner.
Subject to the foregoing and the terms of the Lease, Tenant hereby waives the provisions of Section 1950.7 of the California Civil Code, and all other provisions of law, now or hereafter in force, which (a) establish a time frame within
which a landlord must 

 refund a security deposit under a lease, and/or (b) provide that Landlord may claim from a security
deposit only those sums reasonably necessary to remedy defaults in the payment of rent, to repair damage caused by Tenant or to clean the Premises, it being agreed that Landlord may, in addition, claim those sums reasonably necessary to compensate
Landlord for any other loss or damage caused by the default of Tenant under the Lease, including without limitation all damages or rent due upon termination of the Lease pursuant to Section 1951.2 of the California Civil Code. If Tenant
performs every provision of the Lease to be performed by Tenant, the unused portion of the Security Deposit shall be returned to Tenant or the last assignee of Tenant’s interest under the Lease within thirty (30) days following expiration
or termination of the Term of the Lease. 
 11. Right Of First Notification. In the event that Suite 230, 310, or 410 (each,
for the purposes of this Paragraph only, a “First Notice Space”) becomes available during the Term of the Lease, Landlord shall notify Tenant of such available space (the “Available Space”) and the terms and conditions under
which Landlord intends to market the Available Space (the “Availability Notice”). Tenant shall have ten (10) business days following receipt of the Availability Notice to elect in writing to lease such Available Space on the terms and
conditions set forth in the Availability Notice. Should Tenant indicate that it is not prepared to lease the Available Space, whether by written notice to Landlord or by failing to affirmatively respond to the Availability Notice in writing within
ten (10) business days, then Tenant shall be deemed to have waived its Right of First Notification with respect to the applicable Available Space. The First Notice Space shall be deemed to be “available” when the lease for any current
tenant of the First Notice Space expires or is otherwise terminated. The First Notice Space shall not be deemed to be “available” if the space is either (i) assigned or subleased by the current tenant of the space, or (ii) relet
by the current tenant of the space by renewal, extension, or renegotiation. There are no superior rights to the First Notice Spaces except a right of first notification of CPMC with respect to Suites 310 and 410. 

12. Parking. Notwithstanding any provision to the contrary set forth in the Lease, effective as of the Effective Date, in
addition to Tenant’s Allotted Spaces, Tenant shall have the right, but not the obligation, to lease on a non-exclusive basis up to eighteen (18) (i.e., 1 space per 1,000 rentable square feet of Suite 330)
additional parking spaces in the Parking Lot (“Tenant’s Additional Allotted Spaces”) upon payment of the Parking Rental and otherwise in accordance with the terms of Paragraph 24 of the Lease. Once leased, Tenant must lease a parking
space for the entirety of the Lease Term. Any of Tenant’s Additional Allotted Spaces not actually leased by Tenant within six (6) months of the Suite 330 Rent Commencement Date (the “Suite 330 Parking Date”) shall revert to
Landlord and shall no longer be considered part of Tenant’s Additional Allotted Spaces, provided that, in the event after the Suite 330 Parking Date, parking spaces continue to be available in the Parking Lot, Tenant may request to right to
lease additional spaces, up to a total of sixty-five (65) parking total spaces (i.e., forty-seven (47) spaces representing Tenant’s Allotted Spaces, and eighteen (18) spaces representing Tenant’s Additional Allotted Spaces),
if such request is consented to by Landlord (such consent not to be unreasonably withheld), such spaces shall become part of the Tenant’s Allotted Spaces or Tenant’s Additional Allotted Spaces. 

 13. Brokers. Landlord hereby represents and warrants to Tenant that it has
dealt with no broker, finder or similar person in connection with this First Amendment other than Colliers International (“Landlord’s Broker”), and Tenant hereby represents and warrants to Landlord that it has dealt with no broker,
finder or similar person in connection with this First Amendment, other than CBRE and Scully Commercial Inc. (collectively, “Tenant’s Broker”). Landlord shall pay any and all commissions payable to Landlord’s Broker in connection
with the execution of this First Amendment pursuant to a separate agreement. Landlord’s Broker shall pay Tenant’s Broker any commissions payable to Tenant’s Broker pursuant to a separate agreement between Landlord’s Broker and
Tenant’s Broker. Landlord and Tenant shall each defend, indemnify and hold the other harmless with respect to all claims, causes of action, liabilities, losses, costs and expenses (including without limitation attorneys’ fees) arising from
a breach of the foregoing representation and warranty. 
 14. Prohibited Persons and Transactions. As an inducement to each
party to enter into this Amendment, each of Landlord and Tenant hereby represents and warrants that: (i) it is not, nor is it owned or controlled directly or indirectly by, any person, group, entity or nation named on any list issued by the
Office of Foreign Assets Control of the United States Department of the Treasury (“OFAC”) pursuant to Executive Order 13224 or any similar list or any law, order, rule or regulation or any Executive Order of the President of the United
States as a terrorist, “Specially Designated National and Blocked Person” or other banned or blocked person (any such person, group, entity or nation being hereinafter referred to as a “Prohibited Person”); (ii) it is not (nor is
it owned or controlled, directly or indirectly, by any person, group, entity or nation which is) acting directly or indirectly for or on behalf of any Prohibited Person; and (iii) neither Landlord or Tenant (nor any person, group, entity or
nation which owns or controls Landlord or Tenant, directly or indirectly) has conducted or will conduct business or has engaged or will engage in any transaction or dealing with any Prohibited Person, including without limitation any assignment of
the Lease or any subletting of all or any portion of the Premises or the making or receiving of any contribution of funds, goods or services to or for the benefit of a Prohibited Person. Each of Landlord and Tenant covenants and agrees (a) to
comply with all requirements of law relating to money laundering, anti-terrorism, trade embargos and economic sanctions, now or hereafter in effect, (b) to immediately notify the other party in writing if any of the representations, warranties
or covenants set forth in this Paragraph 8(e) are no longer true or have been breached or if such party has a reasonable basis to believe that they may no longer be true or have been breached, (c) not to use funds from any Prohibited Person to
make any payment due to the other party under the Lease and (d) at the request of the other party, to provide such information as may be requested to determine compliance with the terms hereof. The representations and warranties contained in
this subsection shall be continuing in nature and shall survive the expiration or earlier termination of this Amendment. 
 15. No
Further Modifications. Except as otherwise set forth in this First Amendment, the terms and conditions of the Lease remain unchanged and in full force and effect. 

 16. Counterparts. This First Amendment may be executed in counterparts, each
of which shall be deemed an original, and all of which when executed and delivered shall together constitute one and the same instrument. 

17. Authority. Each party represents that the person executing this First Amendment for such party is acting on behalf of such
party and is duly authorized to execute this First Amendment for such party. 
 18. Entire Agreement. This First Amendment,
together with the Lease, constitute the entire and complete agreement of the parties with respect to the subject matter hereof, and supersedes all prior or contemporaneous agreements, statements, promises, understandings, arrangements, and
commitments. 
 [Signatures on following page.]

 IN WITNESS WHEREOF, the parties hereto have executed this First Amendment to Lease as of the
date first written above. 
  

																			
	LANDLORD:
	
	 CLPF-475 BRANNAN STREET L.P.,

a Delaware limited partnership

			
	    	 	By:	 	CLPF - 475 BRANNAN STREET GP, LLC
		 		 	Its general partner
				
		 		 	By:	 	Clarion Lion Properties Fund Holdings. L.P.,
		 		 		 	Its sole member
					
		 		 		 	By:	 	CLPF-Holdings, LLC,
		 		 		 		 	Its general partner
						
		 		 		 		 	By:	 	Clarion Lion Properties Fund Holdings REIT, LLC,
		 		 		 		 		 	Its sole member
							
		 		 		 		 		 	By:	 	Clarion Lion Properties Fund, LP,
		 		 		 		 		 		 	Its managing member
								
		 		 		 		 		 		 	By:	 	Clarion Partners LPF GP, LLC,
		 		 		 		 		 		 		 	Its general partner
									
		 		 		 		 		 		 		 	By:	 	Clarion Partners, LLC,
		 		 		 		 		 		 		 		 	Its sole member
										
		 		 		 		 		 		 		 		 	By:	 	 /s/ Michael J. Duffy

		 		 		 		 		 		 		 		 		 	Michael J. Duffy
		 		 		 		 		 		 		 		 		 	Authorized Signatory
										
		 		 		 		 		 		 		 		 		 	Date: 6/3/15

  

									
	TENANT:	  	 FASTLY, INC.,
 a Delaware
corporation
	  		  	
					
		  	By:	  	 /s/ Paul Luongo
	  		  	
		  	Name:	  	Paul Luongo	  		  	
		  	Title:	  	VP & General Counsel	  		  	

 

 

 Exhibit “C-1” 

Work Letter 
 This WORK
LETTER (the “Agreement”) is hereby made a part of that certain First Amendment to Lease (the “First Amendment”) made and entered into by and between CLPF-475 BRANNAN STREET, L.P., a Delaware limited partnership
(“Landlord”) and FASTLY, INC., a Delaware corporation (“Tenant”). All terms used herein which are defined in the Lease or any addendum or other Exhibits attached thereto shall have the same meanings herein as are
ascribed to such terms in such documents. Landlord and Tenant hereby agree as follows with respect to the construction of initial improvements in Suite 330. 

1. COMPLETION AND APPROVAL OF PLANS. 

1.1 Space Plan. Tenant shall cause to be constructed at Tenant’s cost and expense, except as otherwise specified in
paragraph 2 below, improvements in Suite 330 (the “Suite 330 Improvements”) in accordance with a mutually agreed preliminary plan (the “Space Plan”). Tenant acknowledges that Landlord has made no representation or warranty
whatsoever concerning (i) the actual cost to design and construct the Suite 330 Improvements or (ii) the extent to which the actual cost or final configuration of the Suite 330 Improvements will be affected by the adoption of new federal,
state, or local laws or the implementation of any regulations or building requirements under new or existing laws, including, without limitation, the Americans With Disabilities Act and any fire and life safety laws or regulations. Notwithstanding
the foregoing, Landlord hereby pre-approves, as part of the Suite 330 Improvements, the connection of Suite 330 to the Existing Premises to create one contiguous Premises. 

1.2 Final Plans. Upon approval of the Space Plan, Tenant shall cause to be prepared such plans, drawings, and specifications
(collectively, the “Plans”) as may be necessary to obtain a building permit for construction of the Suite 330 Improvements. Upon completion thereof, the Plans shall be submitted to Landlord for approval. Landlord shall notify Tenant, in
writing, within five (5) business days following receipt by Landlord of the Plans if Landlord disapproves of any portion thereof. Such disapproval shall be communicated with sufficient specificity to enable Tenant to revise the Plans in a
manner acceptable to Landlord. If Landlord objects to any portion of the Plans, Tenant shall cause the same to be revised, and shall resubmit the revised Plans to Landlord for approval. Landlord shall have two (2) days to approve or disapprove
of the revised Plans. The foregoing process shall continue until the Plans are approved by Landlord. 
 1.3 Required Changes.
Landlord hereby consents to any changes to the Plans which may be imposed as a condition of obtaining a permit for the construction of the Suite 330 Improvements by any municipal department having jurisdiction over same, provided that Tenant shall
clearly identify such changes on the Plans. 

 1.4 Requested Changes. If Tenant desires to make any changes to the final Plans
following approval thereof, Tenant must obtain Landlord’s prior written consent. All such requests for changes and consent shall be subject to the procedures set forth in paragraph 5 hereof. 

2. COST OF IMPROVEMENTS. 

2.1 Tenant’s Cost; Allowance. Tenant shall bear all costs of designing and constructing the Suite 330 Improvements, except
that Landlord shall provide a construction allowance (the “Suite 330 Allowance”) to be applied to such costs in an amount equal to Two Hundred Forty-Six Thousand Nine Hundred Fifteen and 47/100
Dollars ($246,915.47) (i.e., $3.60 per rentable square foot of Suite 330, multiplied by 3.79 years (representing the Term of the Lease with respect to Suite 330 starting from the Suite 330 Rent Commencement Date)). The costs of such construction
shall include, without limitation, costs of preparing the Space Plan, pricing plans, and field surveys, costs of preparing the Plans and all working drawings, costs of obtaining building permits, costs of labor and materials used in such
construction, Landlord’s three percent (3%) construction management fee, and all other costs of such design and construction including a conditional use permit (if required) and occupancy permits. No portion of the Suite 330 Allowance may be
used for furniture, fixtures, equipment, Supplemental HVAC Units, Tenant’s Security System or for any non-permanent improvement in Suite 330. 

2.2 Costs in Excess of the Suite 330 Allowance. Tenant shall pay all costs of constructing the Suite 330 Improvements to the
extent that the cost thereof exceeds the Suite 330 Allowance. 
 2.3 Payment of Suite 330 Allowance. Landlord shall disburse
the Suite 330 Allowance (after deducting Landlord’s construction management fee) in accordance with the following terms and conditions. Upon completion of the Suite 330 Improvements, Tenant shall submit to Landlord written request for
reimbursement for the cost of designing and constructing the Suite 330 Improvements. Such written request must detail work performed and materials supplied in performing the Suite 330 Improvements, all of which shall be subject to reasonable
substantiation by Landlord, or an architect or other representative retained by Landlord. Except as provided below, payment for such costs shall be made to Tenant within thirty (30) days after Landlord’s receipt of the written request and
the following supporting materials: receipts evidencing payment of all amounts due and a sworn affidavit or lien waiver from each of Tenant’s designers, contractors, subcontractors, workers, and suppliers stating that they have been paid in
full for all work performed and materials and equipment supplied by them on Suite 330. Should the cost to design and construct the Suite 330 Improvements exceed the Suite 330 Allowance, Tenant shall be solely responsible for the payment of such
overage. Should the cost to design and construct the Suite 330 Improvements be less than the Suite 330 Allowance, Landlord shall have no obligation to pay or credit to Tenant any portion of such unused Suite 330 Allowance. Tenant shall substantially
complete construction of any improvements to Suite 330 within eighteen (18) months of the Suite 330 Expansion Date. Landlord shall have no obligation to disburse any portion of the Suite 330 Allowance for any portion of the Suite 330
Improvements not completed within such eighteen (18) month period. 

 3. ACCEPTANCE OF PREMISES. Tenant acknowledges and agrees that Landlord will be
delivering Suite 330 broom-clean but otherwise in their “as-is” condition and Tenant acknowledges that neither Landlord, its asset manager, property manager, nor any employee or agent of said
entities have made any representation or warranty with respect to the condition of Suite 330. 
 4. CONTRACTORS; MATERIALS. 

4.1 Approval Required. Tenant will cause the Suite 330 Improvements to be constructed pursuant to the Plans by a general contractor
reasonably acceptable to Landlord (“Contractor”), with Landlord reserving the right to approve all subcontractors, with all such approvals being in writing, and not to be unreasonably withheld or delayed. Notwithstanding the foregoing, the
general contractor and all subcontractor shall be union labor. Tenant shall not permit any other contractor or subcontractor to perform work in Suite 330 in connection with the Suite 330 Improvements without the express prior written consent of
Landlord, which consent shall not be unreasonably withheld. Any such contractors approved by Landlord for the performance of any work in Suite 330 prior to occupancy by Tenant shall be subject to the supervision of Landlord’s contractor. Unless
otherwise expressly described in the Plans, all wall coverings, woodwork (if any), paint, floor coverings, and other finishes shall be of a quality comparable to finishes typically used in the Building (“Building Standard”) from time to
time for general tenant improvement work in the Project. All material and workmanship used in construction by Tenant or Tenant’s contractors of the Suite 330 Improvements shall be of a quality that is at least Building Standard. 

4.2 Contractor Requirements. Tenant’s contractors shall comply with all rules and regulations which Landlord may generally impose
from time to time upon contractors and subcontractors in the building. Tenant shall require all contractors and subcontractors performing construction or alterations to Suite 330 to, prior to commencing any such work, furnish Landlord with original
certificates of insurance evidencing that such contractors and subcontractors carry: (i) workers compensation insurance in such amounts as may be required by law; (ii) liability insurance (including owned and
non-owned automobile liability) with limits of no less than $1,000,000; (iii) employers’ liability insurance with limits of at least $1,000,000; and (iv) umbrella/excess liability insurance with
limits of not less than $2,000,000. All such liability policies shall (x) name Landlord, its asset manager and property manager as additional insureds; (y) be primary to and non-contributory with any
insurance policies carried by Landlord or such asset or property manager; and (z) contain contractual liability and cross liability endorsements in favor of Landlord, its asset manager and property manager. 

4.3 No Warranty. Landlord’s supervision and/or approval of any contractor or any contractor’s work shall not under any
circumstances constitute a warranty or representation that such work was properly performed or designed or create any liability for payment for such work by Landlord. Rather, Tenant acknowledges that such supervision by Landlord, regardless of
whether Landlord earns a fee for same, is for the sole benefit of Landlord and the property wherein Suite 330 is located. 

 5. EXTRA WORK. 

5.1 In General. Except as expressly approved in writing by Landlord pursuant to the provisions of this paragraph 5, Tenant shall
not revise the final Plans or any portion of the Suite 330 Improvements which have been constructed (all such revised work is hereinafter collectively referred to herein as “Extra Work”). 

5.2 Procedure. If any request by Tenant for Extra Work would require a change to the final Plans such revised Plans shall be
performed by Tenant at Tenant’s expense. Landlord shall respond in writing to any request by Tenant for the approval of Extra Work. Any approval of such request may, in Landlord’s sole discretion, be conditioned upon conditions which
Landlord may find to be reasonable under the circumstances. If Tenant shall fail to meet any such conditions precedent to the performance of Extra Work within three (3) days following Landlord’s notice to Tenant of same, the proposed Extra
Work shall be deemed disapproved by Landlord, and Tenant shall not be permitted to perform any portion thereof. 
 6. TENANT’S
LIABILITIES. Landlord shall have no liability for any loss of or damage to any of Tenant’s or Tenant’s contractors’ fixtures or property installed or left in Suite 330, and Tenant shall be fully responsible for same. Tenant
shall be responsible for the prompt removal of all rubbish and refuse left by Tenant’s contractors and by the delivery of Tenant’s personal property into Suite 330. Tenant shall be liable for the repair of any damage to the Suite 330
Improvements occurring during any entry into Suite 330 by Tenant, its agents, contractors, employees, or invitees. 
 7. FORCE MAJEURE
DELAYS. The term “Force Majeure Delay” shall mean any delay in the completion of the Suite 330 Improvements which is attributable to any delay or failure to perform attributable to any strike, lockout, or other labor or
industrial disturbance, civil disturbance, judicial order, act of a public enemy, war, riot, sabotage, blockade, embargo, inability to secure customary materials, supplies, or labor through ordinary sources by reason of regulation or order of any
governmental agency, delay attributable to lightning, earthquake, fire, storm, hurricane, tornado, flood, washout, explosion, or any other cause beyond the reasonable control of Tenant. Notwithstanding any provision of the Lease to the contrary, any
prevention, delay, or stoppage due to any Force Majeure Delay shall excuse Tenant’s performance hereunder for a period of time equal to any such prevention, delay, or stoppage. 

 EXHIBIT D-1 

SUITE 330 EXPANSION MEMORANDUM 

THIS MEMORANDUM is entered into as of
                          ,              by and
between CLPF-475 BRANNAN STREET L.P., a Delaware limited partnership (“Landlord”), and FASTLY, INC., a Delaware corporation (“Tenant”), with respect to that certain First Amendment to Lease
dated as of                       , 2015 (the “First Amendment”) respecting certain premises (the “Suite 330”)
located in the building known as 475 Brannan Street, San Francisco, California. 
 Pursuant to Paragraph 5 of the First Amendment, Landlord
and Tenant hereby confirm and agree that the Suite 330 Expansion Date (as defined in the First Amendment) is                       , 20
    , that the Suite 300 Rent Commencement Date (as defined in the First Amendment) is                     
    , 20     , and that the schedule of Basic monthly Rent payable by tenant for Suite 330 is as follows: 
  

 

									
	    /     /         	 	–  	 	    /     /         	 	$             	 	Per Month
					
	    /     /         	 	–  	 	    /     /         	 	$             	 	Per month
					
	    /     /         	 	–  	 	    /     /         	 	$             	 	Per month
					
	    /     /         	 	–  	 	    /     /         	 	$             	 	Per Month

 IN WITNESS WHEREOF, Landlord and Tenant have executed and delivered this Memorandum as of the day and year
first above written. 
  

																			
	LANDLORD:
	
	 CLPF-475 BRANNAN STREET L.P.,

a Delaware limited partnership

			
	    	 	By:	 	CLPF - 475 BRANNAN STREET GP, LLC
		 		 	Its general partner
				
		 		 	By:	 	Clarion Lion Properties Fund Holdings. L.P.,
		 		 		 	Its sole member
					
		 		 		 	By:	 	CLPF-Holdings, LLC,
		 		 		 		 	Its general partner
						
		 		 		 		 	By:	 	Clarion Lion Properties Fund Holdings REIT, LLC,
		 		 		 		 		 	Its sole member
							
		 		 		 		 		 	By:	 	Clarion Lion Properties Fund, LP,
		 		 		 		 		 		 	Its managing member
								
		 		 		 		 		 		 	By:	 	Clarion Partners LPF GP, LLC,
		 		 		 		 		 		 		 	Its general partner
									
		 		 		 		 		 		 		 	By:	 	Clarion Partners, LLC,
		 		 		 		 		 		 		 		 	Its sole member
										
		 		 		 		 		 		 		 		 	By:	 	  

		 		 		 		 		 		 		 		 		 	Michael J. Duffy
		 		 		 		 		 		 		 		 		 	Authorized Signatory
										
		 		 		 		 		 		 		 		 		 	Date:                             

									
	TENANT:	  	 FASTLY, INC.,
 a Delaware
corporation
	  		  	
					
		  	By:	  	  
	  		  	
		  	Name:	  	  
	  		  	
		  	Title:EX-10.19

 Exhibit 10.19 

THIS WARRANT AND THE SHARES ISSUABLE HEREUNDER HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR
THE SECURITIES LAWS OF ANY STATE AND, EXCEPT AS SET FORTH IN SECTIONS 5.3 AND 5.4 BELOW, MAY NOT BE OFFERED, SOLD, PLEDGED OR OTHERWISE TRANSFERRED UNLESS AND UNTIL REGISTERED UNDER SAID ACT AND LAWS OR IN FORM AND SUBSTANCE SATISFACTORY TO THE
COMPANY, SUCH OFFER, SALE, PLEDGE OR OTHER TRANSFER IS EXEMPT FROM SUCH REGISTRATION. 
 WARRANT TO PURCHASE STOCK 

Company: FASTLY, INC., a Delaware corporation 
  

			
	Number of Shares:	  	equal to: (i) 9,721 shares, plus (ii) the cumulative, aggregate number of additional shares of Series B Preferred Stock equal to one percent (1.0%) of the original principal amount of all Equipment Advances (as
defined in the Loan Agreement) made by Silicon Valley Bank to the Company divided by the Warrant Price.

  

			
	 Type/Series of Stock: Series B Preferred Stock

Warrant Price: $2.5719 per share
 Issue Date:
July 24, 2013
 Expiration Date: July 24, 2023 See also Section 5.1(b).
	  	    

  

			
	 Credit Facility:
	  	This Warrant to Purchase Stock (“Warrant”) is issued in connection with that certain Loan and Security Agreement of even date herewith between Silicon Valley Bank and the Company (the
“Loan Agreement”).

 THIS WARRANT CERTIFIES THAT, for good and valuable consideration, SILICON VALLEY BANK (together with any
successor or permitted assignee or transferee of this Warrant or of any shares issued upon exercise hereof, “Holder”) is entitled to purchase the number of fully paid and
non-assessable shares (the “Shares”) of the above-stated Type/Series of Stock (the “Class”) of the above-named company (the
“Company”) at the above-stated Warrant Price, all as set forth above and as adjusted pursuant to Section 2 of this Warrant, subject to the provisions and upon the terms and conditions set forth in this
Warrant. Reference is made to Section 5.4 of this Warrant whereby Silicon Valley Bank shall transfer this Warrant to its parent company, SVB Financial Group. 

SECTION 1. EXERCISE. 
 1.1
Method of Exercise. Holder may at any time and from time to time exercise this Warrant, in whole or in part, by delivering to the Company the original of this Warrant together with a duly executed Notice of Exercise in substantially the form
attached hereto as Appendix 1 and, unless Holder is exercising this Warrant pursuant to a cashless exercise set forth in Section 1.2, a check, wire transfer of same-day funds (to an account designated by
the Company), or other form of payment acceptable to the Company for the aggregate Warrant Price for the Shares being purchased. 
 1.2
Cashless Exercise. On any exercise of this Warrant, in lieu of payment of the aggregate Warrant Price in the manner as specified in Section 1.1 above, but otherwise in accordance with the requirements of Section 1.1, Holder may
elect to receive Shares equal to the value of this Warrant, or portion hereof as to which this Warrant is being exercised. Thereupon, the Company shall issue to the Holder such number of fully paid and
non-assessable Shares as are computed using the following formula: 
 X = Y(A-B)/A 

  
 1 

 where: 
  

					
			
	                        	 	X =	  	the number of Shares to be issued to the Holder;
			
		 	Y =	  	the number of Shares with respect to which this Warrant is being exercised (inclusive of the Shares surrendered to the Company in payment of the aggregate Warrant Price);
			
		 	A =	  	the Fair Market Value (as determined pursuant to Section 1.3 below) of one Share; and
			
		 	B =	  	the Warrant Price.

 1.3 Fair Market Value. If the Company’s common stock is then traded or quoted on a nationally
recognized securities exchange, inter-dealer quotation system or over-the-counter market (a “Trading Market”) and the Class is
common stock, the fair market value of a Share shall be the closing price or last sale price of a share of common stock reported for the Business Day immediately before the date on which Holder delivers this Warrant together with its Notice of
Exercise to the Company. If the Company’s common stock is then traded in a Trading Market and the Class is a series of the Company’s convertible preferred stock, the fair market value of a Share shall be the closing price or last sale
price of a share of the Company’s common stock reported for the Business Day immediately before the date on which Holder delivers this Warrant together with its Notice of Exercise to the Company multiplied by the number of shares of the
Company’s common stock into which a Share is then convertible. If the Company’s common stock is not traded in a Trading Market, the Board of Directors of the Company shall determine the fair market value of a Share in its reasonable good
faith judgment. 
 1.4 Delivery of Certificate and New Warrant. Within a reasonable time after Holder exercises this Warrant in the
manner set forth in Section 1.1 or 1.2 above, the Company shall deliver to Holder a certificate representing the Shares issued to Holder upon such exercise and, if this Warrant has not been fully exercised and has not expired, a new warrant of
like tenor representing the Shares not so acquired. 
 1.5 Replacement of Warrant. On receipt of evidence reasonably satisfactory to
the Company of the loss, theft, destruction or mutilation of this Warrant and, in the case of loss, theft or destruction, on delivery of an indemnity agreement reasonably satisfactory in form, substance and amount to the Company or, in the case of
mutilation, on surrender of this Warrant to the Company for cancellation, the Company shall, within a reasonable time, execute and deliver to Holder, in lieu of this Warrant, a new warrant of like tenor and amount. 

1.6 Treatment of Warrant Upon Acquisition of Company. 

(a) Acquisition. For the purpose of this Warrant, “Acquisition” means any transaction or series of
related transactions involving: (i) the sale, lease, exclusive license, or other disposition of all or substantially all of the assets of the Company (ii) any merger or consolidation of the Company into or with another person or entity
(other than a merger or consolidation effected exclusively to change the Company’s domicile), or any other corporate reorganization, in which the stockholders of the Company in their capacity as such immediately prior to such merger,
consolidation or reorganization, own less than a majority of the Company’s (or the surviving or successor entity’s) outstanding voting power immediately after such merger, consolidation or reorganization; or (iii) any sale or other
transfer by the stockholders of the Company of shares representing at least a majority of the Company’s then-total outstanding combined voting power. 

  
 2 

 (b) Treatment of Warrant at Acquisition. In the event of an Acquisition in which the
consideration to be received by the Company’s stockholders consists solely of cash, solely of Marketable Securities or a combination of cash and Marketable Securities (a “Cash/Public Acquisition”),
either (i) Holder shall exercise this Warrant pursuant to Section 1.1 and/or 1.2 and such exercise will be deemed effective immediately prior to and contingent upon the consummation of such Acquisition or (ii) if Holder elects not
to exercise the Warrant, this Warrant will expire immediately prior to the consummation of such Acquisition. 
 (c) The Company shall provide
Holder with written notice of its request relating to the Cash/Public Acquisition (together with such reasonable information as Holder may reasonably require regarding the treatment of this Warrant in connection with such contemplated Cash/Public
Acquisition giving rise to such notice), which is to be delivered to Holder not less than seven (7) Business Days prior to the closing of the proposed Cash/Public Acquisition. In the event the Company does not provide such notice, then if,
immediately prior to the Cash/Public Acquisition, the fair market value of one Share (or other security issuable upon the exercise hereof) as determined in accordance with Section 1.3 above would be greater than the Warrant Price in effect on
such date, then this Warrant shall automatically be deemed on and as of such date to be exercised pursuant to Section 1.2 above as to all Shares (or such other securities) for which it shall not previously have been exercised, and the Company
shall promptly notify the Holder of the number of Shares (or such other securities) issued upon such exercise to the Holder and Holder shall be deemed to have restated each of the representations and warranties in Section 4 of the Warrant as
the date thereof. 
 (d) Upon the closing of any Acquisition other than a Cash/Public Acquisition defined above, the acquiring, surviving or
successor entity shall assume the obligations of this Warrant, and this Warrant shall thereafter be exercisable for the same securities and/or other property as would have been paid for the Shares issuable upon exercise of the unexercised portion of
this Warrant as if such Shares were outstanding on and as of the closing of such Acquisition, subject to further adjustment from time to time in accordance with the provisions of this Warrant. 

(e) As used in this Warrant, “Marketable Securities” means securities meeting all of the following requirements:
(i) the issuer thereof is then subject to the reporting requirements of Section 13 or Section 15(d) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and is then current in its
filing of all required reports and other information under the Act and the Exchange Act; (ii) the class and series of shares or other security of the issuer that would be received by Holder in connection with the Acquisition were Holder to
exercise this Warrant on or prior to the closing thereof is then traded in Trading Market, and (iii) following the closing of such Acquisition, Holder would not be restricted from publicly re-selling all
of the issuer’s shares and/or other securities that would be received by Holder in such Acquisition were Holder to exercise or convert this Warrant in full on or prior to the closing of such Acquisition, except to the extent that any such
restriction (x) arises solely under federal or state securities laws, rules or regulations, and (y) does not extend beyond six (6) months from the closing of such Acquisition. 

SECTION 2. ADJUSTMENTS TO THE SHARES AND WARRANT PRICE. 

2.1 Stock Dividends; Splits, Etc. If the Company declares or pays a dividend or distribution on the outstanding shares of the
Class payable in common stock or other securities or property (other than cash), then upon exercise of this Warrant, for each Share acquired, Holder shall 

  
 3 

 receive, without additional cost to Holder, the total number and kind of securities and property which
Holder would have received had Holder owned the Shares of record as of the date the dividend or distribution occurred. If the Company subdivides the outstanding shares of the Class by reclassification or otherwise into a greater number of
shares, the number of Shares purchasable hereunder shall be proportionately increased and the Warrant Price shall be proportionately decreased. If the outstanding shares of the Class are combined or consolidated, by reclassification or
otherwise, into a lesser number of shares, the Warrant Price shall be proportionately increased and the number of Shares shall be proportionately decreased. 

2.2 Reclassification. Exchange. Combinations or Substitution. Upon any event whereby all of the outstanding shares of the Class are
reclassified, exchanged, combined, substituted, or replaced for, into, with or by Company securities of a different class and/or series, then from and after the consummation of such event, this Warrant will be exercisable for the number, class and
series of Company securities that Holder would have received had the Shares been outstanding on and as of the consummation of such event, and subject to further adjustment thereafter from time to time in accordance with the provisions of this
Warrant. The provisions of this Section 2.2 shall similarly apply to successive reclassifications, exchanges, combinations substitutions, replacements or other similar events. 

2.3 Conversion of Preferred Stock. If the Class is a class and series of the Company’s convertible preferred stock, in the
event that all outstanding shares of the Class are converted, automatically or by action of the holders thereof, into common stock pursuant to the provisions of the Company’s Certificate of Incorporation, including, without limitation, in
connection with the Company’s initial, underwritten public offering and sale of its common stock pursuant to an effective registration statement under the Act (the “IPO”), then from and after the date on
which all outstanding shares of the Class have been so converted, this Warrant shall be exercisable for such number of shares of common stock into which the Shares would have been converted had the Shares been outstanding on the date of such
conversion, and the Warrant Price shall equal the Warrant Price in effect as of immediately prior to such conversion divided by the number of shares of common stock into which one Share would have been converted, all subject to further adjustment
thereafter from time to time in accordance with the provisions of this Warrant. 
 2.4 Adjustments for Diluting Issuances. The Shares
shall have the same Series Preferred Conversion Rate (as defined in the Company’s Amended and Restated Certificate of Incorporation, as amended from time to time) as all other shares of the Company’s Series B Preferred Stock. 

2.5 No Fractional Share. No fractional Share shall be issuable upon exercise of this Warrant and the number of Shares to be issued shall
be rounded down to the nearest whole Share. If a fractional Share interest arises upon any exercise of the Warrant, the Company shall eliminate such fractional Share interest by paying Holder in cash the amount computed by multiplying the fractional
interest by (i) the fair market value (as determined in accordance with Section 1.3 above) of a full Share, less (ii) the then-effective Warrant Price. 

2.6 Notice/Certificate as to Adjustments. Upon each adjustment of the Warrant Price, Class and/or number of Shares, the Company, at
the Company’s expense, shall notify Holder in writing within a reasonable time setting forth the adjustments to the Warrant Price, Class and/or number of Shares and facts upon which such adjustment is based. The Company shall, upon written
request from Holder, furnish Holder with a certificate of its Chief Financial Officer, including computations of such adjustment and the Warrant Price, Class and number of Shares in effect upon the date of such adjustment. 

  
 4 

 SECTION 3. REPRESENTATIONS AND COVENANTS OF THE COMPANY. 

3.1 Representations and Warranties. The Company represents and warrants to, and agrees with, the Holder as follows: 

(a) The initial Warrant Price referenced on the first page of this Warrant is not greater than the price per share at which shares of the
Class were last sold and issued prior to the Issue Date hereof in an arms-length transaction in which at least $500,000 of such shares were sold. 

(b) All Shares which may be issued upon the exercise of this Warrant, and all securities, if any, issuable upon conversion of the Shares,
shall, upon issuance, be duly authorized, validly issued, fully paid and non-assessable, and free of any liens and encumbrances except for restrictions on transfer provided for herein or under applicable
federal and state securities laws. The Company covenants that it shall at all times cause to be reserved and kept available out of its authorized and unissued capital stock such number of shares of the Class, common stock and other securities as
will be sufficient to permit the exercise in full of this Warrant and the conversion of the Shares into common stock or such other securities. 

(c) The Company’s capitalization table attached hereto as Schedule 1 is true and complete, in all material respects, as of the Issue Date.

 3.2 Notice of Certain Events. If the Company proposes at any time to: 

(a) declare any dividend or distribution upon the outstanding shares of the Class or common stock, whether in cash, property, stock, or
other securities and whether or not a regular cash dividend; 
 (b) offer for subscription or sale pro rata to the holders of the
outstanding shares of the Class any additional shares of any class or series of the Company’s stock (other than pursuant to contractual pre-emptive rights); 

(c) effect any reclassification, exchange, combination, substitution, reorganization or recapitalization of the outstanding shares of the
Class; 
 (d) effect an Acquisition or to liquidate, dissolve or wind up; or 

(e) effect an IPO; 
 then, in connection with
each such event, the Company shall give Holder: 
 (1) at least seven (7) Business Days prior written notice of the date
on which a record will be taken for such dividend, distribution, or subscription rights (and specifying the date on which the holders of outstanding shares of the Class will be entitled thereto) or for determining rights to vote, if any, in
respect of the matters referred to in (a) and (b) above; 
 (2) in the case of the matters referred to in (c) and
(d) above at least seven (7) Business Days prior written notice of the date when the same will take place (and specifying the date on which the holders of outstanding shares of the Class will be entitled to exchange their shares for the
securities or other property deliverable upon the occurrence of such event); and 

  
 5 

 (3) with respect to the IPO, at least seven (7) Business Days prior
written notice of the date on which the Company proposes to file its registration statement in connection therewith. 
 Reference is made to
Section 1.6(c) whereby this Warrant will be deemed to be exercised pursuant to Section 1.2 hereof if the Company does not give written notice to Holder of a Cash/Public Acquisition as required by the terms hereof. Company will also provide
information requested by Holder that is reasonably necessary to enable Holder to comply with Holder’s accounting or reporting requirements. 

SECTION 4. REPRESENTATIONS. WARRANTIES OF THE HOLDER. 

The Holder represents and warrants to the Company as follows: 

4.1 Purchase for Own Account. This Warrant and the securities to be acquired upon exercise of this Warrant by Holder are being acquired
for investment for Holder’s account, not as a nominee or agent, and not with a view to the public resale or distribution within the meaning of the Act. Holder also represents that it has not been formed for the specific purpose of acquiring
this Warrant or the Shares. 
 4.2 Disclosure of Information. Holder is aware of the Company’s business affairs and financial
condition and has received or has had full access to all the information it considers necessary or appropriate to make an informed investment decision with respect to the acquisition of this Warrant and its underlying securities. Holder further has
had an opportunity to ask questions and receive answers from the Company regarding the terms and conditions of the offering of this Warrant and its underlying securities and to obtain additional information (to the extent the Company possessed such
information or could acquire it without unreasonable effort or expense) necessary to verify any information furnished to Holder or to which Holder has access. 

4.3 Investment Experience. Holder understands that the purchase of this Warrant and its underlying securities involves substantial risk.
Holder has experience as an investor in securities of companies in the development stage and acknowledges that Holder can bear the economic risk of such Holder’s investment in this Warrant and its underlying securities and has such knowledge
and experience in financial or business matters that Holder is capable of evaluating the merits and risks of its investment in this Warrant and its underlying securities and/or has a preexisting personal or business relationship with the Company and
certain of its officers, directors or controlling persons of a nature and duration that enables Holder to be aware of the character, business acumen and financial circumstances of such persons. 

4.4 Accredited Investor Status. Holder is an “accredited investor” within the meaning of Regulation D promulgated under the
Act. 
 4.5 The Act. Holder understands that this Warrant and the Shares issuable upon exercise hereof have not been registered under
the Act in reliance upon a specific exemption therefrom, which exemption depends upon, among other things, the bona fide nature of the Holder’s investment intent as expressed herein. Holder understands that this Warrant and the Shares issued
upon any exercise hereof must be held indefinitely unless subsequently registered under the Act and qualified under applicable state securities laws, or unless exemption from such registration and qualification are otherwise available. Holder is
aware of the provisions of Rule 144 promulgated under the Act. 

  
 6 

 4.6 Market Stand-off Agreement. The Holder
agrees that the Shares shall be subject to the Market Standoff provisions in Section 2.11 of the Investor Rights Agreement or similar agreement. 

4.7 No Voting Rights. Holder, as a Holder of this Warrant, will not have any voting rights until the exercise of this Warrant. 

SECTION 5. MISCELLANEOUS. 

5.1 Term and Automatic Conversion Upon Expiration. 

(a) Term. Subject to the provisions of Section 1.6 above, this Warrant is exercisable in whole or in part at any time and from time
to time on or before 6:00 PM, Pacific time, on the Expiration Date and shall be void thereafter. 
 (b) Automatic Cashless Exercise upon
Expiration. In the event that, upon the Expiration Date, the fair market value of one Share (or other security issuable upon the exercise hereof) as determined in accordance with Section 1.3 above is greater than the Warrant Price in effect
on such date, then this Warrant shall automatically be deemed on and as of such date to be exercised pursuant to Section 1.2 above as to all Shares (or such other securities) for which it shall not previously have been exercised, and the
Company shall, within a reasonable time, deliver a certificate representing the Shares (or such other securities) issued upon such exercise to Holder. 

5.2 Legends. The Shares (and the securities issuable, directly or indirectly, upon conversion of the Shares, if any) shall be imprinted
with a legend in substantially the following form: 
 THE SHARES EVIDENCED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED
UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR THE SECURITIES LAWS OF ANY STATE AND, EXCEPT AS SET FORTH IN THAT CERTAIN WARRANT TO PURCHASE STOCK ISSUED BY THE ISSUER TO SILICON VALLEY BANK
DATED                    , MAY NOT BE OFFERED, SOLD, PLEDGED OR OTHERWISE TRANSFERRED UNLESS AND UNTIL REGISTERED UNDER SAID ACT AND LAWS OR
IN FORM AND SUBSTANCE SATISFACTORY TO THE ISSUER, SUCH OFFER, SALE, PLEDGE OR OTHER TRANSFER IS EXEMPT FROM SUCH REGISTRATION. 
 5.3
Compliance with Securities Laws on Transfer. This Warrant and the Shares issuable upon exercise of this Warrant (and the securities issuable, directly or indirectly, upon conversion of the Shares, if any) may not be transferred or assigned in
whole or in part except in compliance with applicable federal and state securities laws by the transferor and the transferee (including, without limitation, the delivery of investment representation letters and legal opinions reasonably satisfactory
to the Company, as reasonably requested by the Company). The Company shall not require Holder to provide an opinion of counsel if the transfer is to SVB Financial Group (Silicon Valley Bank’s parent company) or any other affiliate of Holder,
provided that any such transferee is an “accredited investor” as defined in Regulation D promulgated under the Act. Additionally, the Company shall also not require an opinion of counsel if there is no material question as to the
availability of Rule 144 promulgated under the Act. 

  
 7 

 5.4 Transfer Procedure. After receipt by Silicon Valley Bank of the executed Warrant,
Silicon Valley Bank will transfer all of this Warrant to its parent company, SVB Financial Group. By its acceptance of this Warrant, SVB Financial Group hereby makes to the Company each of the representations and warranties set forth in Section 4
hereof and agrees to be bound by all of the terms and conditions of this Warrant as if the original Holder hereof. Subject to the provisions of Section 5.3 and, with respect to shares of Common Stock to be transferred by SVB Financial Group to an
entity that is not an affiliate of SVB Financial Group, the Company’s Bylaws, upon providing the Company with written notice, SVB Financial Group and any subsequent Holder may transfer all or part of this Warrant or the Shares issuable upon
exercise of this Warrant (or the securities issuable directly or indirectly, upon conversion of the Shares, if any) to any transferee, provided, however, in connection with any such transfer, SVB Financial Group or any subsequent Holder will give
the Company notice of the portion of the Warrant being transferred with the name, address and taxpayer identification number of the transferee and Holder will surrender this Warrant to the Company for reissuance to the transferee(s) (and Holder if
applicable); and provided further, that any subsequent transferee other than SVB Financial Group shall agree in writing with the Company to be bound by all of the terms and conditions of this Warrant. Notwithstanding any contrary provision herein,
at all times prior to the IPO, Holder may not, without the Company’s prior written consent, transfer this Warrant or any portion hereof, or any Shares issued upon any exercise hereof, or any shares or other securities issued upon any conversion
of any Shares issued upon any exercise hereof, to any person or entity who directly competes with the Company, except in connection with an Acquisition of the Company by such a direct competitor. 

5.5 Notices. All notices and other communications hereunder from the Company to the Holder, or vice versa, shall be deemed delivered and
effective (i) when given personally, (ii) on the third (3rd) Business Day after being mailed by first-class registered or certified mail, postage prepaid, (iii) upon actual receipt if given by facsimile or electronic mail and such receipt is
confirmed in writing by the recipient, or (iv) on the first Business Day following delivery to a reliable overnight courier service, courier fee prepaid, in any case at such address as may have been furnished to the Company or Holder, as the case
may be, in writing by the Company or such Holder from time to time in accordance with the provisions of this Section 5.5. All notices to Holder shall be addressed as follows until the Company receives notice of a change of address in connection with
a transfer or otherwise: 
 SVB Financial Group 

Attn: Treasury Department 

3003 Tasman Drive, HC 215 

Santa Clara, CA 95054 

Telephone: (408) 654-7400 

Facsimile: (408) 988-8317 

Email address: derivatives@svb.com 

  
 8 

 Notice to the Company shall be addressed as follows until Holder receives notice of a change
in address: 
 Fastly, Inc. 

Attn:                   
                              

(ADDRESS)                   
                  

Telephone:                   
                      

Facsimile:                   
                      

Email:                   
                            

With a copy (which shall not constitute notice) to: 

LAW FIRM 

Attn:                   
                                

(ADDRESS)                   
                    

Telephone:                   
                      

Facsimile:                   
                        

Email:                   
                              

5.6 Waiver. This Warrant and any term hereof may be changed, waived, discharged or terminated (either generally or in a particular
instance and either retroactively or prospectively) only by an instrument in writing signed by the party against which enforcement of such change, waiver, discharge or termination is sought. 

5.7 Attorney’s Fees. In the event of any dispute between the parties concerning the terms and provisions of this Warrant, the party
prevailing in such dispute shall be entitled to collect from the other party all costs incurred in such dispute, including reasonable attorneys’ fees. 

5.8 Counterparts; Facsimile/Electronic Signatures. This Warrant may be executed in counterparts, all of which together shall constitute
one and the same agreement. Any signature page delivered electronically or by facsimile shall be binding to the same extent as an original signature page with regards to any agreement subject to the terms hereof or any amendment thereto. 

5.9 Governing Law. This Warrant shall be governed by and construed in accordance with the laws of the State of California, without
giving effect to its principles regarding conflicts of law. 
 5.10 Headings. The headings in this Warrant are for purposes of
reference only and shall not limit or otherwise affect the meaning of any provision of this Warrant. 
 5.11 Business Days.
“Business Day” is any day that is not a Saturday, Sunday or a day on which Silicon Valley Bank is closed. 

[Remainder of page left blank intentionally] 

[Signature page follows] 

  
 9 

 IN WITNESS WHEREOF, the parties have caused this Warrant to Purchase Stock to be executed by
their duly authorized representatives effective as of the Issue Date written above. 
 “COMPANY” 

FASTLY, INC. 
  

			
	By:	 	 /s/ Artur Bergman

	Name:	 	Artur Bergman
		 	(Print)
	Title:	 	CEO

 “HOLDER” 
 SILICON
VALLEY BANK 
  

			
	By:	 	 /s/ Joe Werner

	Name:	 	Joe Werner
		 	(Print)
	Title:	 	Vice President

  
 10 

 APPENDIX 1 

NOTICE OF EXERCISE 
 1.
The undersigned Holder hereby exercises its right purchase                      shares of the Common/Series
                 Preferred [circle one] Stock of Fastly, inc. (the “Company”) in accordance with the attached Warrant To Purchase Stock,
and tenders payment of the aggregate Warrant Price for such shares as follows: 
 [    ] check in the amount of
$                    payable to order of the Company enclosed herewith 

[    ] Wire transfer of immediately available funds to the Company’s account 

[    ] Cashless Exercise pursuant to Section 1.2 of the Warrant 

[    ] Other [Describe]
                                         
                            

2. Please issue a certificate or certificates representing the Shares in the name specified below: 

 

					
		 	  
	 	
	     
	 	
                Holder’s
Name
	 	
			
		 	  
	 	    
			
		 	  
	 	
		 	
                (Address)
	 	

 3. By its execution below and for the benefit of the Company, Holder hereby restates each of the
representations and warranties in Section 4 of the Warrant to Purchase Stock as of the date hereof. 
  

			
	 HOLDER:

	
	
                     
                   

		
	 By:
	 	
              
                          

	 Name:
	 	  

	 Title:
	 	  

	 (Date):
	 	  

 Appendix 1 
  

 SCHEDULE 1 

Company Capitalization Table 

See attached 
 Schedule 1

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00294-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00294-of-00352.parquet"}]]