Fastly CTO Bergman sold 8,960 shares under plan

Rhea-AI Filing Summary

Fastly, Inc. (FSLY) reports that director and Chief Technology Officer Artur Bergman, through The Per Artur Bergman Revocable Trust, sold 8,960 shares of Class A Common Stock on September 9, 2026 in open-market transactions under a Rule 10b5-1 trading plan adopted on June 4, 2026.

The trust sold 8,560 shares at a weighted-average price of $22.66 (individual trades from $22.50 to $23.09) and 400 shares at a weighted-average price of $24.11 (trades from $23.89 to $24.34). Bergman continues to hold 1,896,249 shares directly and has additional indirect holdings through several trusts where he serves as investment adviser or trustee.

Insider Trade Summary 10b5-1

Net Seller: 8,960 shares

Net Sell 8 txns

Insider Bergman Artur

Role Chief Technology Officer

Sold 8,960 shs ($204K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock F1, F2, F3	8,560	$22.66	$194K
Sale	Class A Common Stock F1, F4, F3	400	$24.11	$10K
holding	Class A Common Stock	--	--	--
holding	Class A Common Stock F5	--	--	--
holding	Class A Common Stock F6	--	--	--
holding	Class A Common Stock F7	--	--	--
holding	Class A Common Stock F8	--	--	--
holding	Class A Common Stock F9	--	--	--

Holdings After Transaction: Class A Common Stock — 1,630,785 shares (Indirect, See Footnote.); Class A Common Stock — 1,896,249 shares (Direct); Class A Common Stock — 1,949,691 shares (Indirect, See Footnote)

Footnotes (9)

1. F1. The sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 4, 2026.
2. F2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $22.50 to $23.09, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) and (4) to this Form 4.
3. F3. The shares are held by The Per Artur Bergman Revocable Trust, of which the reporting person is settlor, sole trustee, and sole beneficiary.
4. F4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $23.89 to $24.34, inclusive.
5. F5. The shares are held by The Artur Bergman Remainder Trust One DTD 5/2/2019, of which the reporting person is the investment advisor.
6. F6. The shares are held by The Artur Bergman Remainder Trust Three DTD 5/2/2019, of which the reporting person is the investment advisor.
7. F7. The shares are held by The PAB 2021 Remainder Trust, of which the reporting person is the investment advisor.
8. F8. The shares are held by The Per Artur Bergman Grantor Retained Annuity Trust No. 4, of which the reporting person is trustee.
9. F9. The shares are held by The Per Artur Bergman Grantor Retained Annuity Trust No. 5, of which the reporting person is trustee.

Key Figures

Shares sold (total): 8,960 shares Shares sold at $22.66 weighted-average price: 8,560 shares Shares sold at $24.11 weighted-average price: 400 shares +2 more

5 metrics

Shares sold (total) 8,960 shares Class A Common Stock sold on September 9, 2026 via trust

Shares sold at $22.66 weighted-average price 8,560 shares Open-market sales on September 9, 2026; trades from $22.50–$23.09

Shares sold at $24.11 weighted-average price 400 shares Open-market sales on September 9, 2026; trades from $23.89–$24.34

Direct holdings after transactions 1,896,249 shares Class A Common Stock held directly by Artur Bergman after September 9, 2026

Rule 10b5-1 plan adoption date June 4, 2026 Trading plan under which the September 9, 2026 sales were effected

Key Terms

Rule 10b5-1 trading plan, weighted average price, revocable trust, Remainder Trust, +1 more

5 terms

Rule 10b5-1 trading plan regulatory

"The sale was effected pursuant to a Rule 10b5-1 trading plan adopted"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

weighted average price financial

"The price reported in Column 4 is a weighted average price"

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

revocable trust financial

"The shares are held by The Per Artur Bergman Revocable Trust"

A revocable trust is a legal arrangement where the person who creates it keeps control and can change or cancel the trust at any time, while naming who will manage and receive the assets later. Think of it like a flexible folder for your investments and property that can be relabeled or reworked as circumstances change; it matters to investors because it determines how ownership is recorded, how easily assets transfer on incapacity or death, and whether holdings bypass public probate proceedings.

Remainder Trust financial

"The shares are held by The Artur Bergman Remainder Trust One"

Grantor Retained Annuity Trust financial

"The shares are held by The Per Artur Bergman Grantor Retained Annuity Trust No. 4"

A grantor retained annuity trust (GRAT) is an estate-planning tool where the person who creates the trust transfers assets into it but receives fixed cash payments (an annuity) from the trust for a set number of years; whatever remains after that term passes to designated beneficiaries. It matters to investors because it can shift future appreciation of assets out of the creator’s taxable estate—like putting an asset into a timed vending machine that pays you fixed amounts while any extra value that grows inside the machine goes to heirs with reduced gift or estate tax consequences.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transactions did Fastly (FSLY) disclose for Artur Bergman on this Form 4?

Fastly disclosed that Artur Bergman was associated with the sale of 8,960 shares of Class A Common Stock on September 9, 2026. The sales were effected in open-market transactions through a revocable trust connected to him.

At what prices were the Fastly (FSLY) shares sold in Artur Bergman’s September 9, 2026 transactions?

The filing reports weighted-average sale prices of $22.66 for 8,560 shares (individual trades from $22.50–$23.09) and $24.11 for 400 shares (trades from $23.89–$24.34) of Fastly Class A Common Stock.

Were Artur Bergman’s Fastly (FSLY) stock sales made under a Rule 10b5-1 plan?

Yes. The filing states the sale was effected pursuant to a Rule 10b5-1 trading plan adopted by Artur Bergman on June 4, 2026, and the Form 4’s Rule 10b5-1 checkbox is affirmed.

How many Fastly (FSLY) shares does Artur Bergman hold directly after these transactions?

After the reported transactions, Artur Bergman holds 1,896,249 shares of Fastly Class A Common Stock in a direct ownership capacity, according to the holdings line in the Form 4.

How are the sold Fastly (FSLY) shares held in relation to Artur Bergman?

The 8,960 sold shares are held by The Per Artur Bergman Revocable Trust, for which he is settlor, sole trustee, and sole beneficiary. Additional indirect holdings are reported in various remainder trusts and grantor retained annuity trusts where he serves as investment adviser or trustee.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/11/2026 - 05:05 PM Accepted by SEC EDGAR 09/11/2026 - 05:04 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Bergman Artur

(Last) (First) (Middle)

C/O FASTLY, INC.

475 BRANNAN STREET, SUITE 300

(Street)

SAN FRANCISCO CALIFORNIA 94107

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Fastly, Inc. [ FSLY ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Technology Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/09/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	09/09/2026		S(1)		8,560	D	$22.66(2)	1,631,185	I	See Footnote.(3)
Class A Common Stock	09/09/2026		S(1)		400	D	$24.11(4)	1,630,785	I	See Footnote.(3)
Class A Common Stock								1,896,249	D
Class A Common Stock								840,005	I	See Footnote(5)
Class A Common Stock								109,686	I	See Footnote(6)
Class A Common Stock								156,521	I	See Footnote(7)
Class A Common Stock								588,671	I	See Footnote(8)
Class A Common Stock								254,808	I	See Footnote(9)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 4, 2026.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $22.50 to $23.09, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) and (4) to this Form 4.

3. The shares are held by The Per Artur Bergman Revocable Trust, of which the reporting person is settlor, sole trustee, and sole beneficiary.

4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $23.89 to $24.34, inclusive.

5. The shares are held by The Artur Bergman Remainder Trust One DTD 5/2/2019, of which the reporting person is the investment advisor.

6. The shares are held by The Artur Bergman Remainder Trust Three DTD 5/2/2019, of which the reporting person is the investment advisor.

7. The shares are held by The PAB 2021 Remainder Trust, of which the reporting person is the investment advisor.

8. The shares are held by The Per Artur Bergman Grantor Retained Annuity Trust No. 4, of which the reporting person is trustee.

9. The shares are held by The Per Artur Bergman Grantor Retained Annuity Trust No. 5, of which the reporting person is trustee.

Remarks:

	/s/ Tara Seracka, Attorney-in-Fact	09/11/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)