Company · Ownership research

Duolingo, Inc. DUOL

CIK 0001562088

Form 4 transactions dated Nov 1, 2023 to Nov 9, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

This page lists 30 of 68 rows; the complete set is available through the API.

Insider filings on file run through Nov 5, 2026.

Insider purchases & sales

Purchased: $498.79K
Sold: $503.26M

Nov 1, 2023 – Nov 5, 2026
Available records · partial months are marked ·

202610 of 26 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
Nov 4, 2026	Chen Stephen C. General Counsel	Sale10b5-1 footnote	$647.50K 3,700 shares sold	8.45% sold Direct holding	▾
Nov 2, 2026	GORDON WILLIAM B Director	Sale10b5-1 footnote	$1.36M 10,000 shares sold	14.62% sold Direct holding	▾
Oct 7, 2026	von Ahn Luis President & CEO, Co-Founder · Director · 10% owner	Sale10b5-1 footnote	$16.69M 110,046 shares sold	100.00% sold Direct holding	▾
Sep 24, 2026	von Ahn Luis President & CEO, Co-Founder · Director · 10% owner	Sale10b5-1 footnote	$7.03M 46,682 shares sold	100.00% sold Direct holding	▾
Sep 22, 2026	von Ahn Luis President & CEO, Co-Founder · Director · 10% owner	Sale10b5-1 footnote	$549.00K 3,614 shares sold	100.00% sold Direct holding	▾
Sep 21, 2026	von Ahn Luis President & CEO, Co-Founder · Director · 10% owner	Sale10b5-1 footnote	$5.62M 37,366 shares sold	100.00% sold Direct holding	▾
Sep 16, 2026	von Ahn Luis President & CEO, Co-Founder · Director · 10% owner	Sale10b5-1 footnote	$4.25M 28,292 shares sold	100.00% sold Direct holding	▾
Sep 14, 2026	Chen Stephen C. General Counsel	Sale10b5-1 footnote	$1.21M 8,072 shares sold	15.57% sold Direct holding	▾
Sep 8, 2026	GORDON WILLIAM B Director	Sale10b5-1 footnote	$1.46M 10,000 shares sold	12.75% sold Direct holding	▾
Aug 18, 2026	Glance Natalie Chief Engineering Officer	Sale10b5-1 footnote	$212.08K 1,539 shares sold	0.90% sold Direct holding	▾

Showing 26 / 26 record groups in 2026. The complete set is available through the API.

Duolingo, Inc. · DUOL

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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 26 of 26 purchase / sale groups and 30 of 68 other groups; the totals and the monthly series cover the whole window.

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{"action":"list","ticker":"DUOL","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.