Company · Ownership research

Amplitude, Inc. AMPL

CIK 0001866692

Form 4 transactions dated Nov 1, 2023 to Nov 11, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

This page lists 30 of 48 rows; the complete set is available through the API.

Insider filings on file run through Nov 6, 2026.

Insider purchases & sales

Purchased: $539.56K
Sold: $18.40M

Nov 1, 2023 – Nov 6, 2026
Available records · partial months are marked ·

202610 of 15 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
Nov 5, 2026	Skates Spenser CEO and President · Director · 10% owner	Sale10b5-1 footnote	$1.11K 61 shares sold	100.00% sold Indirect holding	▾
Nov 4, 2026	Skates Spenser CEO and President · Director · 10% owner	Sale10b5-1 footnote	$15.73K 901 shares sold	100.00% sold Indirect holding	▾
Oct 28, 2026	Skates Spenser CEO and President · Director · 10% owner	Sale10b5-1 footnote	$116.56K 6,651 shares sold	100.00% sold Indirect holding	▾
Oct 26, 2026	Skates Spenser CEO and President · Director · 10% owner	Sale10b5-1 footnote	$5.24K 300 shares sold	100.00% sold Indirect holding	▾
Oct 23, 2026	Skates Spenser CEO and President · Director · 10% owner	Sale10b5-1 footnote	$1.88M 107,136 shares sold	100.00% sold Indirect holding	▾
Oct 2, 2026	Skates Spenser CEO and President · Director · 10% owner	Sale10b5-1 footnote	$1.02M 70,087 shares sold	100.00% sold Indirect holding	▾
Oct 1, 2026	Skates Spenser CEO and President · Director · 10% owner	Sale10b5-1 footnote	$51.14K 3,539 shares sold	100.00% sold Indirect holding	▾
Sep 30, 2026	Skates Spenser CEO and President · Director · 10% owner	Sale10b5-1 footnote	$19.86K 1,374 shares sold	100.00% sold Indirect holding	▾
Sep 10, 2026	Skates Spenser CEO and President · Director · 10% owner	Sale10b5-1 footnote	$2.28M 185,000 shares sold	100.00% sold Indirect holding	▾
Sep 4, 2026	Crook Nathaniel Glenn Chief Commercial Officer	Sale10b5-1 footnote	$3.90M 300,000 shares sold	15.60% sold Direct holding	▾

Showing 15 / 15 record groups in 2026. The complete set is available through the API.

Amplitude, Inc. · AMPL

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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 15 of 15 purchase / sale groups and 30 of 48 other groups; the totals and the monthly series cover the whole window.

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

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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.