Derivative exercise or conversion — not an open-market buy.
Written from the filing's own figures. OQRO describes what was reported and never tells you what to buy or sell
View the official recordSEC Form 4 — Statement of Changes in Beneficial OwnershipAll the details
Dates, kept separate
Transaction date
Dec 8, 2025
Reporting period
Not applicable
Filed with the SEC
Dec 9, 2025
DirectorIndirect holdingOption exercise
Context
Classification
option exercise
Code C — exercise or conversion of a derivative security
Planned / mechanical clue
None found in footnotes
Only flagged when a footnote says so; never inferred
Source receipt
Record ID
0001628280-25-056204
Filed / recorded
Dec 9, 2025, 11:41 PM UTC
Added to OQRO
Oct 6, 2026, 7:37 PM UTC
Parser
form4-xml-v2
Data quality
Verified: identifiers matched exactly
Issuer
Duolingo, Inc.
Issuer CIK
1562088
Ticker
DUOL
Reporting person
Severin Hacker
Relationship
Director, Officer, 10% owner
Officer title
Chief Tech Officer, Co-Founder
Security
Class B Common Stock
Table
Derivative (Table II)
Transaction date
Dec 8, 2025
Transaction code
C
Shares / units
50,000
Price per share
$0.00
Acquired / disposed
Disposed (D)
Shares owned after
2,836,917
Ownership form
Indirect — See footnote
Amendment
No
Footnotes from the filing
Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. Each share of Class B Common Stock will convert automatically into one share of Class A Common Stock in connection with: (i) any transfer, whether or not for value, except for certain permitted transfers further described in the Issuer's amended and restated certificate of incorporation, (ii) such time as the aggregate number of shares of Class B Common Stock outstanding ceases to represent 5% of the aggregate number of shares of Common Stock outstanding, and (iii) the death of the Reporting Person.
Shares held by SBH Trust dated March 10, 2020, of which Reporting Person is Trustee.