Stephen C. Chen
CIK 1869758 · General Counsel · last filed 2026-06-18
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
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Disclosed Exposure
$7.02M
Companies
1
Total Filings
68
Lifetime Open-Market Net
-$26.84M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| DUOL | General Counsel | 52,865 | $132.75 | $7.02M | -$26.84M | 44 | 2026-06-18 |
Recent Filings · Page 2 of 7
68 filingsInsider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2025-11-18 | DUOL | Notice (144) | −1,514 | -$269.9K | EDGAR |
| 2025-11-17 | DUOL | Notice (144) | −1,282 | -$228.1K | EDGAR |
| 2025-09-19 | DUOL | Exer (M) | +1,700 | $24.5K | EDGAR |
| 2025-08-28 | DUOL | Sell (S) | −1,515 | -$486.9K | EDGAR |
| 2025-08-26 | DUOL | Notice (144) | −1,515 | -$487.0K | EDGAR |
| 2025-08-18 | DUOL | Sell (S) | −1,282 | -$421.8K | EDGAR |
| 2025-08-15 | DUOL | Notice (144) | −1,282 | -$421.8K | EDGAR |
| 2025-08-15 | DUOL | Gift (G) | −750 | $0 | EDGAR |
| 2025-05-19 | DUOL | Sell (S) | −2,635 | -$1.39M | EDGAR |
| 2025-05-16 | DUOL | Notice (144) | −2,635 | -$1.40M | EDGAR |
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.