Severin Hacker
CIK 1870272 · View on SEC EDGAR ↗
Insider
First SEC filing: July 27, 2021 · Latest: May 29, 2026
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 2 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
No open-market trades on record; showing all filings.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| May 27, 2026 | DUOL | F | 31,920 | — | $3,441,614 | — | — | — | (price as of 2026-08-19) |
| May 27, 2026 | DUOL | M | 60,000 | — | — | — | — | — | (price as of 2026-08-19) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Initial ownership (Form 3) 6 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| July 27, 2021 | DUOL | Class B Common Stock→ Class A Common Stock (15,500) | 15,500 | Direct |
| July 27, 2021 | DUOL | Class B Common Stock→ Class A Common Stock (3,457,417) | 3,457,417 | Indirect |
| July 27, 2021 | DUOL | Stock Option (Right to Buy)→ Class B Common Stock (161,000) | 161,000 | Direct |
| July 27, 2021 | DUOL | Stock Option (Right to Buy)→ Class B Common Stock (173,500) | 173,500 | Direct |
| July 27, 2021 | DUOL | Stock Option (Right to Buy)→ Class B Common Stock (175,000) | 175,000 | Direct |
| July 27, 2021 | DUOL | Performance-Based Restricted Stock Units→ Class B Common Stock (600,000) | 600,000 | Direct |