Chung Jane — SEC Form 4 filings
SEC reporting owner CIK 1872398. 14 Form 4 filings on record with FilingPulse; latest filed 2026-03-06.
Transaction summary — filings shown
Covers all 14 filings on record, filed 2024-03-05 to 2026-03-06. 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 — 12,500 shares, $10,011 total (shares × price as filed).
- Open-market sales (code S, non-derivative): none reported.
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 44.
- Largest priced transaction: purchase of 12,500 shares @ $0.80 ($10,011) in SUTRO BIOPHARMA, INC., filed 2025-10-16.
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 |
|---|---|---|---|---|---|
| SUTRO BIOPHARMA, INC. (STRO) | Chief Executive Officer, Director | 13 | 1 leg · 12,500 sh · $10,011 | — | 43 |
| Viracta Therapeutics, Inc. (VIRX) | Director | 1 | — | — | 1 |
Form 4 filings — Chung Jane
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-03-06 | 4 | SUTRO BIOPHARMA, INC. (STRO) | Option exercise (M): 788 @ $0 · Tax withholding (F): 282 @ $21.31 · Option exercise (M): 788 (derivative) @ $0 | EDGAR |
| 2026-03-03 | 4 | SUTRO BIOPHARMA, INC. (STRO) | Option exercise (M): 688 @ $0 · Option exercise (M): 2,500 @ $0 · Tax withholding (F): 1,271 @ $20.47 · Option exercise (M): 7,750 @ $0 · Tax withholding (F): 2,779 @ $20.55 · Option exercise (M): 688 (derivative) @ $0 · +4 more | EDGAR |
| 2025-12-16 | 4 | SUTRO BIOPHARMA, INC. (STRO) | Option exercise (M): 2,500 @ $0 · Tax withholding (F): 894 @ $8.02 · Option exercise (M): 2,500 (derivative) @ $0 | EDGAR |
| 2025-10-16 | 4 | SUTRO BIOPHARMA, INC. (STRO) | Purchase (P): 12,500 @ $0.80 | EDGAR |
| 2025-08-26 | 4 | SUTRO BIOPHARMA, INC. (STRO) | Option exercise (M): 18,750 @ $0 · Tax withholding (F): 6,708 @ $0.80 · Option exercise (M): 18,750 (derivative) @ $0 | EDGAR |
| 2025-04-08 | 4 | SUTRO BIOPHARMA, INC. (STRO) | Grant/award (A): 620,000 (derivative) @ $0 · Grant/award (A): 310,000 (derivative) @ $0 | EDGAR |
| 2025-03-06 | 4 | SUTRO BIOPHARMA, INC. (STRO) | Option exercise (M): 7,875 @ $0 · Tax withholding (F): 2,334 @ $1.42 · Option exercise (M): 7,875 (derivative) @ $0 | EDGAR |
| 2025-03-04 | 4 | SUTRO BIOPHARMA, INC. (STRO) | Option exercise (M): 6,875 @ $0 · Option exercise (M): 25,000 @ $0 · Tax withholding (F): 9,450 @ $1.59 · Option exercise (M): 6,875 (derivative) @ $0 · Option exercise (M): 25,000 (derivative) @ $0 | EDGAR |
| 2024-12-03 | 4 | SUTRO BIOPHARMA, INC. (STRO) | Option exercise (M): 25,000 @ $0 · Tax withholding (F): 8,920 @ $2.69 · Option exercise (M): 25,000 (derivative) @ $0 | EDGAR |
| 2024-08-13 | 4 | SUTRO BIOPHARMA, INC. (STRO) | Option exercise (M): 18,750 @ $0 · Tax withholding (F): 6,689 @ $3.12 · Option exercise (M): 18,750 (derivative) @ $0 | EDGAR |
| 2024-06-24 | 4 | Viracta Therapeutics, Inc. (VIRX) | Grant/award (A): 50,000 (derivative) @ $0 | EDGAR |
| 2024-03-07 | 4 | SUTRO BIOPHARMA, INC. (STRO) | Grant/award (A): 50,000 (derivative) @ $0 · Grant/award (A): 100,000 (derivative) @ $0 | EDGAR |
| 2024-03-06 | 4 | SUTRO BIOPHARMA, INC. (STRO) | Option exercise (M): 7,875 @ $0 · Tax withholding (F): 2,209 @ $4.79 · Option exercise (M): 7,875 (derivative) @ $0 | EDGAR |
| 2024-03-05 | 4 | SUTRO BIOPHARMA, INC. (STRO) | Option exercise (M): 6,875 @ $0 · Tax withholding (F): 2,038 @ $4.95 · Option exercise (M): 6,875 (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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