Duolingo, Inc. files with the SEC under CIK 0001562088 and is classified as prepackaged software. It is grouped with Information Technology companies on this site.
Footnote F1 (shares): Represents an award of fully vested restricted stock units ("RSUs") in lieu of cash retainers pursuant to reporting person's election under the Issuer's Amended and Restated Non-Employee Director Compensation Program (the "Plan"). Each RSU represents the right to receive one… Full note on SEC EDGAR
Footnote F1 (shares): Represents an award of fully vested restricted stock units ("RSUs") in lieu of cash retainers pursuant to reporting person's election under the Issuer's Amended and Restated Non-Employee Director Compensation Program (the "Plan"). Each RSU represents the right to receive one… Full note on SEC EDGAR
Footnote F1 (shares): Represents an award of fully vested restricted stock units ("RSUs") in lieu of cash retainers pursuant to reporting person's election under the Issuer's Amended and Restated Non-Employee Director Compensation Program (the "Plan"). Each RSU represents the right to receive one… Full note on SEC EDGAR
Footnote F2 (price): The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $150.00 to $150.99, inclusive. The Reporting Person hereby undertakes to provide to the Securities… Full note on SEC EDGAR
Footnote F3 (price): The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $151.00 to $151.99, inclusive. The Reporting Person hereby undertakes to provide to the Securities… Full note on SEC EDGAR
Footnote F4 (price): The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $152.00 to $152.99, inclusive. The Reporting Person hereby undertakes to provide to the Securities… Full note on SEC EDGAR
Footnote F5 (price): The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $153.00 to $153.61, inclusive. The Reporting Person hereby undertakes to provide to the Securities… Full note on SEC EDGAR
Footnote F2 (price): The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $150.00 to $150.99, inclusive. The Reporting Person hereby undertakes to provide to the Securities… Full note on SEC EDGAR
Footnote F3 (price): The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $151.00 to $151.92, inclusive. The Reporting Person hereby undertakes to provide to the Securities… Full note on SEC EDGAR
Footnote F4 (price): The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $152.19 to $152.48, inclusive. The Reporting Person hereby undertakes to provide to the Securities… Full note on SEC EDGAR
Footnote F2 (price): The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $150.00 to $150.99, inclusive. The Reporting Person hereby undertakes to provide to the Securities… Full note on SEC EDGAR
Footnote F3 (price): The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $151.00 to $151.36, inclusive. The Reporting Person hereby undertakes to provide to the Securities… Full note on SEC EDGAR
Footnote F2 (price): The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $150.00 to $150.54, inclusive. The Reporting Person hereby undertakes to provide to the Securities… Full note on SEC EDGAR
Footnote F3 (price): The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $151.53 to $152.55, inclusive. The Reporting Person hereby undertakes to provide to the Securities… Full note on SEC EDGAR
Footnote F2 (price): The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $143.24 to $144.22, inclusive. The Reporting Person hereby undertakes to provide to the Securities… Full note on SEC EDGAR
Footnote F3 (price): The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $144.25 to $145.21, inclusive. The Reporting Person hereby undertakes to provide to the Securities… Full note on SEC EDGAR
Footnote F4 (price): The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $145.25 to $146.24, inclusive. The Reporting Person hereby undertakes to provide to the Securities… Full note on SEC EDGAR
Footnote F5 (price): The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $146.25 to $147.16, inclusive. The Reporting Person hereby undertakes to provide to the Securities… Full note on SEC EDGAR
Footnote F6 (price): The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $148.19 to $149.16, inclusive. The Reporting Person hereby undertakes to provide to the Securities… Full note on SEC EDGAR
Footnote F3 (price): The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $136.68 to $137.61, inclusive. The Reporting Person hereby undertakes to provide to the Securities… Full note on SEC EDGAR
Footnote F4 (price): The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $137.72 to $138.59, inclusive. The Reporting Person hereby undertakes to provide to the Securities… Full note on SEC EDGAR
Footnote F1 (shares): Represents restricted stock units ("RSUs") for which the Reporting Person is entitled to receive one (1) share of the Issuer's Class A Common Stock for each RSU upon vesting. 100% of the RSUs vest on the earlier of (i) the first anniversary of the grant date or (ii) the date of… Full note on SEC EDGAR
Footnote F2 (shares): One-half of the RSUs vest on August 10, 2027, and one-fourth vest on each of August 10, 2028 and August 10, 2029.
Footnote F1 (shares): Represents an award of fully vested restricted stock units ("RSUs") in lieu of cash retainers pursuant to reporting person's election under the Issuer's Amended and Restated Non-Employee Director Compensation Program (the "Plan"). Each RSU represents the right to receive one… Full note on SEC EDGAR
Footnote F1 (shares): Represents an award of fully vested restricted stock units ("RSUs") in lieu of cash retainers pursuant to reporting person's election under the Issuer's Amended and Restated Non-Employee Director Compensation Program (the "Plan"). Each RSU represents the right to receive one… Full note on SEC EDGAR
Footnote F1 (shares): Represents an award of fully vested restricted stock units ("RSUs") in lieu of cash retainers pursuant to reporting person's election under the Issuer's Amended and Restated Non-Employee Director Compensation Program (the "Plan"). Each RSU represents the right to receive one… Full note on SEC EDGAR
Footnote F1 (shares): Represents an award of fully vested restricted stock units ("RSUs") in lieu of cash retainers pursuant to reporting person's election under the Issuer's Amended and Restated Non-Employee Director Compensation Program (the "Plan"). Each RSU represents the right to receive one… Full note on SEC EDGAR
Footnote F1 (shares): Constitute restricted stock units ("RSUs") for which the Reporting Person is entitled to receive one (1) share of the Issuer's Class A Common Stock for each RSU upon vesting. 100% of the RSUs vest on the earlier of (i) the first anniversary of the grant date or (ii) the date of… Full note on SEC EDGAR
Footnote F1 (shares): Constitute restricted stock units ("RSUs") for which the Reporting Person is entitled to receive one (1) share of the Issuer's Class A Common Stock for each RSU upon vesting. 100% of the RSUs vest on the earlier of (i) the first anniversary of the grant date or (ii) the date of… Full note on SEC EDGAR
Footnote F1 (shares): Constitute restricted stock units ("RSUs") for which the Reporting Person is entitled to receive one (1) share of the Issuer's Class A Common Stock for each RSU upon vesting. 100% of the RSUs vest on the earlier of (i) the first anniversary of the grant date or (ii) the date of… Full note on SEC EDGAR
Footnote F1 (shares): Constitute restricted stock units ("RSUs") for which the Reporting Person is entitled to receive one (1) share of the Issuer's Class A Common Stock for each RSU upon vesting. 100% of the RSUs vest on the earlier of (i) the first anniversary of the grant date or (ii) the date of… Full note on SEC EDGAR
Footnote F1 (shares): Constitute restricted stock units ("RSUs") for which the Reporting Person is entitled to receive one (1) share of the Issuer's Class A Common Stock for each RSU upon vesting. 100% of the RSUs vest on the earlier of (i) the first anniversary of the grant date or (ii) the date of… Full note on SEC EDGAR
Footnote F1 (shares): Constitute restricted stock units ("RSUs") for which the Reporting Person is entitled to receive one (1) share of the Issuer's Class A Common Stock for each RSU upon vesting. 100% of the RSUs vest on the earlier of (i) the first anniversary of the grant date or (ii) the date of… Full note on SEC EDGAR
Footnote F1 (shares): Constitute restricted stock units ("RSUs") for which the Reporting Person is entitled to receive one (1) share of the Issuer's Class A Common Stock for each RSU upon vesting. 100% of the RSUs vest on the earlier of (i) the first anniversary of the grant date or (ii) the date of… Full note on SEC EDGAR
Footnote F1 (shares): Constitute Restricted Stock Units ("RSUs") for which the Reporting Person is entitled to receive one (1) share of Issuer's Class A Common Stock for each RSU upon vesting. 1/16th of the RSUs shall vest on each quarterly anniversary of May 15, 2026.
Footnote F2 (shares): Represents shares automatically sold to satisfy tax withholding obligations in connection with the vesting of RSUs and delivery of shares.
Footnote F3 (shares): The sale was effected pursuant to the Reporting Person's Rule 10b5-1 trading plan adopted on May 27, 2025.
Footnote F4 (price): The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $112.82 to $113.68, inclusive. The Reporting Person hereby undertakes to provide to the Securities… Full note on SEC EDGAR
Footnote F5 (price): The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $113.82 to $114.66, inclusive. The Reporting Person hereby undertakes to provide to the Securities… Full note on SEC EDGAR
Footnote F1 (shares): Constitute Restricted Stock Units ("RSUs") for which the Reporting Person is entitled to receive one (1) share of Issuer's Class A Common Stock for each RSU upon vesting. 1/16th of the RSUs shall vest on each quarterly anniversary of May 15, 2026.
Footnote F2 (shares): Represents shares automatically sold to satisfy tax withholding obligations in connection with the vesting of RSUs and delivery of shares.
Footnote F3 (shares): The sale was effected pursuant to the Reporting Person's Rule 10b5-1 trading plan adopted on September 15, 2025.
Footnote F4 (price): The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $112.71 to $113.60, inclusive. The Reporting Person hereby undertakes to provide to the Securities… Full note on SEC EDGAR
Footnote F5 (price): The price reported in Column 4 is a weighted average sale price calculated by the broker executing the sales. These shares were sold in multiple transactions at prices ranging from $113.85 to $114.64, inclusive. The Reporting Person hereby undertakes to provide to the Securities… Full note on SEC EDGAR
An insider files Form 144 before selling restricted or control stock. It announces a planned sale. If the sale goes ahead, it shows up later on a Form 4.
Duolingo, Inc. (DUOL) had 14 insider filings in the last 90 days, with the most recent on 2026-10-14. The full record for DUOL runs to 98 Form 4 filings, the earliest from 2024-10-03. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.
How many insiders are buying DUOL stock?
No insider purchases of DUOL were filed in the last 90 days. 1 purchase is on record for this company.
How many insiders are selling DUOL stock?
26 insider sales of DUOL were filed in the last 90 days, totaling $37.69M.
Where can I see DUOL SEC filings (Form 4, 10-K, 10-Q, 8-K)?
This page collects DUOL Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
More Information Technology companies with insider activity
Dollar totals cover purchases and sales only (codes P and S). Grants, option exercises, gifts and tax withholding are counted in shares, because none of them is a trade at a market price.
James H. Shelton - Director
Natalie Glance - Officer
Sara Clemens - Director
Severin Hacker - Officer
