Liawatidewi Yakob — SEC Form 4 filings
SEC reporting owner CIK 1743927. 13 Form 4 filings on record with FilingPulse; latest filed 2026-03-17.
Transaction summary — filings shown
Covers all 13 filings on record, filed 2024-03-06 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): 1 leg across 1 filing — 5,214 shares, $271,389 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 21.
- Largest priced transaction: sale of 5,214 shares @ $52.05 ($271,389) in Amphastar Pharmaceuticals, Inc., filed 2024-11-08.
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 |
|---|---|---|---|---|---|
| Amphastar Pharmaceuticals, Inc. (AMPH) | EVP CORP ADMIN CENTER, Director | 13 | — | 1 leg · 5,214 sh · $271,389 | 21 |
Form 4 filings — Liawatidewi Yakob
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-03-17 | 4 | Amphastar Pharmaceuticals, Inc. (AMPH) | Tax withholding (F): 1,033 @ $18.18 | EDGAR |
| 2026-03-11 | 4 | Amphastar Pharmaceuticals, Inc. (AMPH) | Grant/award (A): 35,450 @ $0 · Tax withholding (F): 1,870 @ $18.91 · Grant/award (A): 73,126 (derivative) @ $0 | EDGAR |
| 2026-03-10 | 4 | Amphastar Pharmaceuticals, Inc. (AMPH) | Tax withholding (F): 1,144 @ $19.34 | EDGAR |
| 2026-03-06 | 4 | Amphastar Pharmaceuticals, Inc. (AMPH) | Tax withholding (F): 965 @ $19.96 | EDGAR |
| 2025-03-18 | 4 | Amphastar Pharmaceuticals, Inc. (AMPH) | Tax withholding (F): 1,031 @ $26.66 · Tax withholding (F): 1,731 @ $27.69 | EDGAR |
| 2025-03-12 | 4 | Amphastar Pharmaceuticals, Inc. (AMPH) | Grant/award (A): 20,837 @ $0 · Grant/award (A): 44,253 (derivative) @ $0 | EDGAR |
| 2025-03-10 | 4 | Amphastar Pharmaceuticals, Inc. (AMPH) | Tax withholding (F): 1,141 @ $28.32 | EDGAR |
| 2025-03-06 | 4 | Amphastar Pharmaceuticals, Inc. (AMPH) | Tax withholding (F): 963 @ $27.62 | EDGAR |
| 2024-11-08 | 4 | Amphastar Pharmaceuticals, Inc. (AMPH) | Option exercise (M): 5,214 @ $13.03 · Sale (S): 5,214 @ $52.05 · Option exercise (M): 5,214 (derivative) @ $0 | EDGAR |
| 2024-06-05 | 4 | Amphastar Pharmaceuticals, Inc. (AMPH) | Tax withholding (F): 272 @ $42.22 | EDGAR |
| 2024-03-19 | 4 | Amphastar Pharmaceuticals, Inc. (AMPH) | Tax withholding (F): 1,027 @ $43.05 · Tax withholding (F): 1,671 @ $43.05 · Tax withholding (F): 1,726 @ $43.05 | EDGAR |
| 2024-03-08 | 4 | Amphastar Pharmaceuticals, Inc. (AMPH) | Tax withholding (F): 1,221 @ $46.31 | EDGAR |
| 2024-03-06 | 4 | Amphastar Pharmaceuticals, Inc. (AMPH) | Grant/award (A): 10,754 @ $0 · Grant/award (A): 22,655 (derivative) @ $0 | 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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