Cook Christopher S — SEC Form 4 filings
SEC reporting owner CIK 1927266. 12 Form 4 filings on record with FilingPulse; latest filed 2026-09-02.
Transaction summary — filings shown
Covers all 12 filings on record, filed 2024-04-15 to 2026-09-02. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): 1 leg across 1 filing — 4,100 shares, $103,710 total (shares × price as filed).
- Open-market sales (code S, non-derivative): 5 legs across 4 filings — 36,629 shares, $2,243,300 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 13.
- Largest priced transaction: sale of 11,903 shares @ $75.31 ($896,415) in Ultra Clean Holdings, Inc., filed 2026-05-04.
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 |
|---|---|---|---|---|---|
| Ultra Clean Holdings, Inc. (UCTT) | President, Products Division | 12 | 1 leg · 4,100 sh · $103,710 | 5 legs · 36,629 sh · $2,243,300 | 13 |
Form 4 filings — Cook Christopher S
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-09-02 | 4 | Ultra Clean Holdings, Inc. (UCTT) | Tax withholding (F): 12,497 @ $67.83 | EDGAR |
| 2026-05-27 | 4 | Ultra Clean Holdings, Inc. (UCTT) | Grant/award (A): 13,196 @ $0 | EDGAR |
| 2026-05-06 | 4 | Ultra Clean Holdings, Inc. (UCTT) | Sale (S): 10,247 @ $73.89 · Sale (S): 1,231 @ $74.55 | EDGAR |
| 2026-05-04 | 4 | Ultra Clean Holdings, Inc. (UCTT) | Tax withholding (F): 1,861 @ $78.15 · Tax withholding (F): 4,181 @ $78.15 · Tax withholding (F): 3,165 @ $78.15 · Sale (S): 11,903 @ $75.31 | EDGAR |
| 2025-09-03 | 4 | Ultra Clean Holdings, Inc. (UCTI) | Grant/award (A): 73,686 @ $0 | EDGAR |
| 2025-05-02 | 4 | Ultra Clean Holdings, Inc. (UCTT) | Tax withholding (F): 1,855 @ $18.71 · Tax withholding (F): 2,225 @ $18.71 · Tax withholding (F): 2,550 @ $18.71 | EDGAR |
| 2025-04-29 | 4 | Ultra Clean Holdings, Inc. (UCTT) | Grant/award (A): 27,831 @ $0 | EDGAR |
| 2025-03-11 | 4 | Ultra Clean Holdings, Inc. (UCTT) | Purchase (P): 4,100 @ $25.30 | EDGAR |
| 2024-05-13 | 4 | Ultra Clean Holdings, Inc. (UCTT) | Sale (S): 8,586 @ $43.51 | EDGAR |
| 2024-05-02 | 4 | Ultra Clean Holdings, Inc. (UCTT) | Tax withholding (F): 2,219 @ $41.83 · Tax withholding (F): 2,542 @ $41.83 | EDGAR |
| 2024-04-30 | 4 | Ultra Clean Holdings, Inc. (UCTT) | Grant/award (A): 15,560 @ $0 | EDGAR |
| 2024-04-15 | 4 | Ultra Clean Holdings, Inc. (UCTT) | Sale (S): 4,662 @ $26.68 | 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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