Company · Ownership research

Fastly, Inc. FSLY

CIK 0001517413

Form 4 transactions dated Nov 1, 2023 to Nov 13, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

Insider filings on file run through Oct 28, 2026.

Insider purchases & sales

Purchased: $0.00
Sold: $122.44M

Nov 1, 2023 – Oct 28, 2026
Available records · partial months are marked ·

2023, from Nov 1, 202310 of 19 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
Dec 26, 2023	Bergman Artur Chief Architect · Director	Sale10b5-1 footnote	$328.65K 17,500 shares sold	0.28% sold Direct holding	▾
Dec 18, 2023	Bergman Artur Chief Architect · Director	Sale10b5-1 footnote	$326.73K 17,500 shares sold	0.28% sold Direct holding	▾
Dec 11, 2023	Bergman Artur Chief Architect · Director	Sale10b5-1 footnote	$302.40K 17,500 shares sold	0.28% sold Direct holding	▾
Dec 7, 2023	Bergman Artur Chief Architect · Director	Sale	$1.69M 100,000 shares sold	47.69% sold Indirect holding	▾
Dec 4, 2023	Bergman Artur Chief Architect · Director	Sale10b5-1 footnote	$314.82K 17,500 shares sold	0.28% sold Direct holding	▾
Nov 30, 2023	Shirk Brett Executive Vice President, CRO	Sale	$10.47K 575 shares sold	0.22% sold Direct holding	▾
Nov 30, 2023	KISLING RONALD W Chief Financial Officer	Sale	$21.09K 1,158 shares sold	0.25% sold Direct holding	▾
Nov 27, 2023	Bergman Artur Chief Architect · Director	Sale10b5-1 footnote	$312.20K 17,500 shares sold	0.28% sold Direct holding	▾
Nov 20, 2023	PAISLEY CHRISTOPHER B Director	Sale10b5-1 footnote	$17.72K 1,000 shares sold	2.50% sold Indirect holding	▾
Nov 20, 2023	Shirk Brett Executive Vice President, CRO	Sale10b5-1 footnote	$129.81K 7,000 shares sold	2.58% sold Direct holding	▾

Showing 19 / 19 record groups in 2023. The complete set is available through the API.

Fastly, Inc. · FSLY

Follow the people behind the trades.

Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and reach other datasets through the Akkru API.

Download CSV
Earlier filings
Advanced screening & filtering
API & AI access

Already have an account?

＋ New accounts get free API credits to explore data beyond ownership filings.

For AI agents & developers

The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 19 of 19 purchase / sale groups and 10 of 10 other groups; the totals and the monthly series cover the whole window.

Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP / CLI.

MCP  https://api.akkrudata.ai/mcp

akkru_insider_transactions
{"action":"list","ticker":"FSLY","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.

MCP endpoint: https://api.akkrudata.ai/mcp
API / MCP / CLI documentation: /documents
llms.txt: /llms.txt

Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Share totals are on today's split-adjusted basis. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.