# EDGAR Filing Document

**Accession Number:** 0001517413
**File Stem:** 0001517413-26-000096
**Filing Date:** 2026-3
**Character Count:** 8453
**Document Hash:** dc16f6fc1513b83b5503ee3ad32b28f1
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001517413-26-000096.hdr.sgml**: 20260305

**ACCESSION NUMBER**: 0001517413-26-000096

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260303

**FILED AS OF DATE**: 20260305

**DATE AS OF CHANGE**: 20260305

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Bergman Artur
- **CENTRAL INDEX KEY:** 0001769490

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-38897
- **FILM NUMBER:** 26727109

**MAIL ADDRESS:**
- **STREET 1:** C/O FASTLY, INC.
- **STREET 2:** 475 BRANNAN STREET, SUITE 300
- **CITY:** SAN FRANCISCO
- **STATE:** CA
- **ZIP:** 94107
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Fastly, Inc.
- **CENTRAL INDEX KEY:** 0001517413
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-PREPACKAGED SOFTWARE [7372]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 275411834
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 475 BRANNAN
- **STREET 2:** SUITE 300
- **CITY:** SAN FRANCISCO
- **STATE:** CA
- **ZIP:** 94107
- **BUSINESS PHONE:** 415-525-3481

**MAIL ADDRESS:**
- **STREET 1:** 475 BRANNAN
- **STREET 2:** SUITE 300
- **CITY:** SAN FRANCISCO
- **STATE:** CA
- **ZIP:** 94107

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Skycache, Inc.(DE)
- **DATE OF NAME CHANGE:** 20110405

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

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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

[ ] 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**<sup>*</sup><br>Bergman Artur<br><sub>(Last) (First) (Middle)</sub><br>C/O FASTLY, INC.<br>475 BRANNAN STREET, SUITE 300<br><sub>(Street)</sub><br>SAN FRANCISCO, CA 94107<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-03-03 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director [ ] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_Chief Technology Officer_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Fastly, Inc. [ FSLY ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Class A Common Stock | 2026-03-03 |  | G<sup>(1)</sup> |  | 50481 | D | $0 | 0 | I | See Footnote<sup>(1)</sup> |
| Class A Common Stock | 2026-03-03 |  | G<sup>(2)</sup> |  | 204327 | D | $0 | 588671 | I | See Footnote<sup>(3)</sup> |
| Class A Common Stock |  |  |  |  |  |  |  | 254808 | I | See Footnote<sup>(4)</sup> |
| Class A Common Stock | 2026-03-04 |  | A |  | 157438<sup>(5)</sup> | A | $0 | 2174321 | D |  |
| Class A Common Stock | 2026-03-04 |  | S<sup>(6)</sup> |  | 24532 | D | $21.06 | 2149789 | D |  |
| Class A Common Stock |  |  |  |  |  |  |  | 1909901 | I | See Foonote<sup>(7)</sup> |
| Class A Common Stock |  |  |  |  |  |  |  | 840005 | I | See Footnote<sup>(8)</sup> |
| Class A Common Stock |  |  |  |  |  |  |  | 109686 | I | See Footnote<sup>(9)</sup> |
| Class A Common Stock |  |  |  |  |  |  |  | 156521 | I | See Footnote<sup>(10)</sup> |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

---

### Footnotes:

(1) On March 3, 2026, all 50,481 remaining shares held by The Per Artur Bergman Grantor Retained Annuity Trust No. 3, of which the reporting person is trustee, were transferred to The Per Artur Bergman Grantor Retained Annuity Trust No. 5.

(2) On March 3, 2026, 204,327 shares held by The Per Artur Bergman Grantor Retained Annuity Trust No. 4, of which the reporting person is trustee, were transferred to The Per Artur Bergman
Grantor Retained Annuity Trust No. 5.

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

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

(5) The shares are represented by restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock upon settlement. 100% of the RSUs are initially subject to vesting. One-twelfth (8.33%) of the total RSUs will vest on May 15, 2026 and the remainder will vest in 11 equal quarterly installments (August, November, February and May) of one-twelfth thereafter (8.33% of the total RSUs will vest per quarter), in each case subject to the Reporting Person's continued service with the Issuer through each applicable vesting date.

(6) Shares sold to satisfy tax obligations in connection with the vesting of previously granted Restricted Stock Units.

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

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

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

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

**Signature:** /s/ Tara Seracka, Attorney-in-Fact  
**Date:** 2026-03-05

### Remarks:

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.**