Duolingo (DUOL) insider trading
Recent insider transactions reported to the SEC on Form 4 — directors and officers buying or selling their own company’s stock. Sourced directly from public SEC filings, latest filed Oct 13, 2026.
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- Filings shown
- 18
- Open-market buys
- 0
- Open-market sells
- 26
Counts cover the 18 most recent Form 4 filings Tradune holds for DUOL (filed Jul 14 – Oct 13, 2026); the score below covers only the trailing 90 days (0 buys, 26 sells). No completed check of DUOL's Form 4 list on SEC EDGAR is on record yet; the latest DUOL filing Tradune holds was filed Oct 13, 2026. This is not guaranteed to be the complete record — see DUOL's full Form 4 filing history on SEC EDGAR.
Open-market activity, last 90 days
Purchases (Form 4 code P) and sales (code S) on the 14 filings Tradune holds for DUOL filed Aug 12 – Oct 13, 2026. Grants, exercises, tax withholding and the other Form 4 transaction codes are left out.
26 open-market sales by Rule 10b5-1 checkbox
- On filings with the 10b5-1 box checked
- 21 sales· 244,072 sh
- checkbox disclosed
- On filings with the box not checked
- 0 sales· 0 sh
- not proof that no plan exists
- Not comparable
- 5 sales· 6,668 sh
- filed before Apr 1, 2023, or no checkbox value in the filing data
Counts are Form 4 lines as filed. The checkbox is one per filing, so every sale on a filing with the box checked is counted there even if only some of its transactions were under a plan; it records what the filer disclosed, and the three categories are not a judgement about why a sale was made.
| Insider | Buys | Sells | Shares bought | Shares sold | Value |
|---|---|---|---|---|---|
| Luis von AhnPresident & CEO, Co-Founder | 0 | 13 | — | 226,000 | −$34,149,662 |
| William B. GordonDirector | 0 | 6 | — | 10,000 | −$1,456,736 |
| Stephen C. ChenGeneral Counsel | 0 | 3 | — | 9,096 | −$1,337,614 |
| Natalie GlanceChief Engineering Officer | 0 | 3 | — | 4,290 | −$567,315 |
| Robert MeeseChief Business Officer | 0 | 1 | — | 1,354 | −$174,842 |
Value = shares × the price reported on each Form 4 (+ purchases, − sales); every open-market line in this window disclosed a price.
Summarises ~90 days of public SEC Form 4 activity — more distinct buyers, officer involvement and net buying score higher. A description of filing activity, not a rating or buy signal. How this score is computed →
How to read this: an open-market purchase (Form 4 code P) is a buy at the market price with the insider’s own money, as opposed to a grant, award or option exercise; an open-market sale is code S. When two or more distinct insiders report open-market purchases in the same 90-day window, this site labels that a cluster — a definition, not a forecast; see insider cluster buying. “Held after” is Form 4 Table I column 5; “Change” = shares ÷ holdings before the trade (held after − shares for an acquisition, held after + shares for a disposition).
Insider Buying at DUOL
No open-market insider purchases (Form 4 code P) were reported for DUOL between Jul 14, 2026 and Oct 13, 2026. The filings below may include other transaction types — sales, grants, option exercises, and tax withholding — shown for completeness; they are not open-market purchases.
Recent Form 4 filings
Source: SEC EDGAR Form 4 · transaction codes explained
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 100 | $149.92 | 11,853 | +0.9% | Oct 10, 2026 |
† change in this filer’s own reported holding line (Form 4 Table I, col. 5), not of total company ownership; small prior holdings produce large percentages, so under 100 shares the prior holding is shown instead.
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 116 | $149.92 | 4,378 | +2.7% | Oct 10, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 98 | $149.92 | 9,121 | +1.1% | Oct 10, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 108 | $149.92 | 7,766 | +1.4% | Oct 10, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 5,114 | $153.26 | 0 | −100% | Oct 7, 2026 |
| Open-market sale 10b5-1 box checked | 29,871 | $152.47 | 5,114 | −85% | Oct 7, 2026 |
| Open-market sale 10b5-1 box checked | 55,036 | $151.52 | 34,985 | −61% | Oct 7, 2026 |
| Conversion of derivative | 110,046 | $38.08 | 110,046 | — | Oct 7, 2026 |
| Open-market sale 10b5-1 box checked | 20,025 | $150.63 | 90,021 | −18% | Oct 7, 2026 |
| Conversion of derivative Class B Common Stock | 110,046 | — | — | — | Oct 7, 2026 |
| Conversion of derivative Class B Common Stock | 110,046 | — | — | — | Oct 7, 2026 |
| Option exercise Stock Option (Right to Buy) | 110,046 | — | — | — | Oct 7, 2026 |
“10b5-1 box checked” = the filer checked the Form 4 box stating that a transaction on the filing was made under a plan intended to satisfy Rule 10b5-1(c); “10b5-1 box not checked” = the box was left blank, which does not prove that no plan exists. The box applies to Form 4s filed from April 1, 2023; older filings, and boxes we could not read, carry no tag. What the 10b5-1 box means.
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 38,758 | $150.45 | 7,924 | −83% | Sep 24, 2026 |
| Conversion of derivative Class B Common Stock | 46,682 | — | — | — | Sep 24, 2026 |
| Conversion of derivative Class B Common Stock | 46,682 | — | — | — | Sep 24, 2026 |
| Option exercise Stock Option (Right to Buy) | 46,682 | — | — | — | Sep 24, 2026 |
| Open-market sale 10b5-1 box checked | 900 | $152.29 | 0 | −100% | Sep 24, 2026 |
| Open-market sale 10b5-1 box checked | 7,024 | $151.42 | 900 | −89% | Sep 24, 2026 |
| Conversion of derivative | 46,682 | $38.08 | 46,682 | — | Sep 24, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 200 | $150.00 | 3,414 | −5.5% | Sep 22, 2026 |
| Conversion of derivative Class B Common Stock | 3,614 | — | — | — | Sep 22, 2026 |
| Conversion of derivative Class B Common Stock | 3,614 | — | — | — | Sep 22, 2026 |
| Option exercise Stock Option (Right to Buy) | 3,614 | — | — | — | Sep 22, 2026 |
| Open-market sale 10b5-1 box checked | 3,414 | $152.02 | 0 | −100% | Sep 22, 2026 |
| Conversion of derivative | 3,614 | $38.08 | 3,614 | — | Sep 22, 2026 |
| Conversion of derivative Class B Common Stock | 9,406 | — | — | — | Sep 21, 2026 |
| Conversion of derivative | 27,960 | $14.42 | 27,960 | — | Sep 21, 2026 |
| Conversion of derivative | 9,406 | $38.08 | 37,366 | +34% | Sep 21, 2026 |
| Open-market sale 10b5-1 box checked | 33,257 | $150.46 | 4,109 | −89% | Sep 21, 2026 |
| Open-market sale 10b5-1 box checked | 4,109 | $151.07 | 0 | −100% | Sep 21, 2026 |
| Option exercise Stock Option (Right to Buy) | 27,960 | — | — | — | Sep 21, 2026 |
| Conversion of derivative Class B Common Stock | 27,960 | — | — | — | Sep 21, 2026 |
| Conversion of derivative Class B Common Stock | 27,960 | — | — | — | Sep 21, 2026 |
| Option exercise Stock Option (Right to Buy) | 9,406 | — | — | — | Sep 21, 2026 |
| Conversion of derivative Class B Common Stock | 9,406 | — | — | — | Sep 21, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Option exercise Stock Option (Right to Buy) | 23,040 | — | — | — | Sep 16, 2026 |
| Conversion of derivative | 23,040 | $14.42 | 23,040 | — | Sep 16, 2026 |
| Open-market sale 10b5-1 box checked | 27,272 | $150.17 | 1,020 | −96% | Sep 16, 2026 |
| Conversion of derivative | 5,252 | $38.08 | 28,292 | +23% | Sep 16, 2026 |
| Open-market sale 10b5-1 box checked | 1,020 | $151.54 | 0 | −100% | Sep 16, 2026 |
| Option exercise Stock Option (Right to Buy) | 5,252 | — | — | — | Sep 16, 2026 |
| Conversion of derivative Class B Common Stock | 5,252 | — | — | — | Sep 16, 2026 |
| Conversion of derivative Class B Common Stock | 5,252 | — | — | — | Sep 16, 2026 |
| Conversion of derivative Class B Common Stock | 23,040 | — | — | — | Sep 16, 2026 |
| Conversion of derivative Class B Common Stock | 23,040 | — | — | — | Sep 16, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 2,107 | $147.43 | 49,734 | −4.1% | Sep 14, 2026 |
| Open-market sale 10b5-1 box checked | 5,965 | $150.00 | 43,769 | −12% | Sep 14, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 2,742 | $144.59 | 74,873 | −3.5% | Sep 8, 2026 |
| Open-market sale 10b5-1 box checked | 100 | $151.64 | 68,415 | −0.1% | Sep 8, 2026 |
| Open-market sale 10b5-1 box checked | 200 | $148.68 | 68,515 | −0.3% | Sep 8, 2026 |
| Open-market sale 10b5-1 box checked | 2,675 | $146.58 | 68,715 | −3.7% | Sep 8, 2026 |
| Open-market sale 10b5-1 box checked | 3,483 | $145.91 | 71,390 | −4.7% | Sep 8, 2026 |
| Open-market sale 10b5-1 box checked | 800 | $143.83 | 77,615 | −1.0% | Sep 8, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale | 502 | $137.01 | — | — | Aug 18, 2026 |
| Open-market sale | 1,037 | $138.19 | — | — | Aug 18, 2026 |
| Open-market sale | 2,751 | $129.13 | — | — | Aug 17, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale | 1,354 | $129.13 | — | — | Aug 17, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale | 1,024 | $129.13 | — | — | Aug 17, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 3,280 | — | — | — | Aug 10, 2026 |
| Grant / award | 1,312 | — | — | — | Aug 10, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 120 | $124.76 | — | — | Jul 10, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 130 | $124.76 | — | — | Jul 10, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 140 | $124.76 | — | — | Jul 10, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 118 | $124.76 | — | — | Jul 10, 2026 |
Insider filings reported around the same time
Other companies whose most recent Form 4 was filed closest to DUOL's (Oct 13, 2026).
Frequently asked about DUOL insider activity
How many insiders bought DUOL stock in these Form 4 filings?
No open-market purchases (Form 4 code P) of DUOL shares were reported by Duolingo insiders between Jul 14, 2026 and Oct 13, 2026. The 18 filings shown on this page cover other transaction types — sales, grants, option exercises, and tax withholding.
Who filed the most recent Form 4 for DUOL?
The most recent Form 4 on this page was filed by Amy Bohutinsky (Director) on Oct 13, 2026, reporting 1 transaction. The original document is linked from the filing list above on SEC EDGAR. Amended filings (Form 4/A) may later revise reported figures.
What was the largest open-market DUOL insider sale shown?
The largest open-market sale among the filings shown was 55,036 DUOL shares at $151.52 (about $8,339,286) by Luis von Ahn (President & CEO, Co-Founder) on Oct 7, 2026. Value is shares × the price reported on the Form 4; that Form 4 has the Rule 10b5-1 box checked.
New to Form 4s? The transaction codes, the 90-day window and the 0–100 score are defined on the insider-activity score methodology page.
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Track DUOL insider filings free →This score summarizes SEC Form 4 filing activity over the trailing 90 days. It is descriptive, not predictive — not a rating, recommendation, or investment advice. Data: SEC EDGAR (public domain), as filed; amendments may revise figures. Tradune is not a registered investment adviser.
Data as filed; amended filings (Form 4/A) may revise figures. Sales may occur under prearranged Rule 10b5-1 trading plans.