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
Oct 20, 2025
Reporting period
Not applicable
Filed with the SEC
Oct 23, 2025
DirectorOption exercise
Context
Classification
option exercise
Code M — exercise or conversion of a derivative security
Planned / mechanical clue
Footnote references vesting of compensation awards
Only flagged when a footnote says so; never inferred
Source receipt
Record ID
0001628280-25-045963
Filed / recorded
Oct 23, 2025, 12:16 AM 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
Performance-Based Restricted Stock Units
Table
Derivative (Table II)
Transaction date
Oct 20, 2025
Transaction code
M
Shares / units
60,000
Price per share
$0.00
Acquired / disposed
Disposed (D)
Shares owned after
390,000
Ownership form
Direct
Amendment
No
Footnotes from the filing
Each Performance-Based Restricted Stock Unit ("PSU") represents a contingent right to receive one share of the Issuer's Class B Common Stock upon vesting. The PSUs vest upon the satisfaction of both a service-based condition and a performance-based condition. The service-based condition is satisfied as to 25% of the PSUs on each anniversary of the completion of the Issuer's initial public offering of Class A common stock based on the Reporting Person's continuous service as CTO to the Issuer through the applicable vesting dates, subject to acceleration upon a cessation of service as CTO as a result of death or permanent disability.
The performance-based condition will be satisfied upon the Issuer's Class A common stock achieving certain stock price hurdles over a period of ten years. Vested PSUs will be settled by the issuance of the underlying Class B Common Stock on the first anniversary of vesting, subject to acceleration upon a termination of employment or a change in control of the Issuer.