Shiu Lambert — SEC Form 4 filings
SEC reporting owner CIK 1796068. 11 Form 4 filings on record with FilingPulse; latest filed 2026-03-17.
Transaction summary — filings shown
Covers all 11 filings on record, filed 2024-03-19 to 2026-03-17. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): 10 legs across 2 filings — 10,241 shares, $2,820,634 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 23.
- Largest priced transaction: sale of 2,850 shares @ $286.28 ($815,898) in Penumbra Inc, filed 2025-03-05.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| Penumbra Inc (PEN) | Chief Accounting Officer | 11 | — | 10 legs · 10,241 sh · $2,820,634 | 23 |
Form 4 filings — Shiu Lambert
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-03-17 | 4 | Penumbra Inc (PEN) | Tax withholding (F): 150 @ $336.18 | EDGAR |
| 2026-02-18 | 4 | Penumbra Inc (PEN) | Grant/award (A): 2,300 @ $0 · Tax withholding (F): 412 @ $339.30 · Grant/award (A): 2,300 @ $0 | EDGAR |
| 2025-12-17 | 4 | Penumbra Inc (PEN) | Tax withholding (F): 300 @ $309.15 | EDGAR |
| 2025-11-18 | 4 | Penumbra Inc (PEN) | Tax withholding (F): 346 @ $280.07 · Tax withholding (F): 506 @ $280.07 · Grant/award (A): 3,580 @ $0 | EDGAR |
| 2025-03-18 | 4 | Penumbra Inc (PEN) | Tax withholding (F): 213 @ $272.62 | EDGAR |
| 2025-03-05 | 4 | Penumbra Inc (PEN) | Sale (S): 886 @ $283.15 · Sale (S): 550 @ $283.96 · Sale (S): 1,672 @ $285.16 · Sale (S): 2,850 @ $286.28 · Sale (S): 348 @ $288.57 · Sale (S): 956 @ $288.88 · +4 more | EDGAR |
| 2025-02-19 | 4 | Penumbra Inc (PEN) | Option exercise (M): 4,525 @ $22.04 · Grant/award (A): 640 @ $0 · Grant/award (A): 1,510 @ $0 · Tax withholding (F): 95 @ $271.14 · Option exercise (M): 4,525 (derivative) @ $0 | EDGAR |
| 2024-12-17 | 4 | Penumbra Inc (PEN) | Tax withholding (F): 300 @ $245.55 | EDGAR |
| 2024-12-03 | 4 | Penumbra Inc (PEN) | Sale (S): 1,798 @ $242.56 · Sale (S): 654 @ $243.01 · Option exercise (M): 5,250 @ $12.36 · Option exercise (M): 5,250 (derivative) @ $0 | EDGAR |
| 2024-11-19 | 4 | Penumbra Inc (PEN) | Grant/award (A): 2,570 @ $0 · Tax withholding (F): 504 @ $237.84 | EDGAR |
| 2024-03-19 | 4 | Penumbra Inc (PEN) | Grant/award (A): 1,670 @ $0 · Tax withholding (F): 232 @ $222.15 | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-11 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
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