Huang James — SEC Form 4 filings
SEC reporting owner CIK 1573160. 8 Form 4 filings on record with FilingPulse; latest filed 2026-06-02.
Transaction summary — filings shown
Covers all 8 filings on record, filed 2025-07-21 to 2026-06-02. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): 4 legs across 4 filings — 1,384,335 shares, $5,230,404 total (shares × price as filed).
- Open-market sales (code S, non-derivative): 2 legs across 2 filings — 394,000 shares, $3,654,040 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 6.
- Largest priced transaction: purchase of 1,160,000 shares @ $3.45 ($4,002,000) in Connect Biopharma Holdings Ltd, filed 2026-04-01.
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 |
|---|---|---|---|---|---|
| Atara Biotherapeutics, Inc. (ATRA) | Director, 10% owner | 6 | 2 legs · 74,335 sh · $856,794 | 2 legs · 394,000 sh · $3,654,040 | 6 |
| Connect Biopharma Holdings Ltd (CNTB) | Director | 2 | 2 legs · 1,310,000 sh · $4,373,610 | — | — |
Form 4 filings — Huang James
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-06-02 | 4 | Connect Biopharma Holdings Ltd (CNTB) | Purchase (P): 150,000 @ $2.48 | EDGAR |
| 2026-05-11 | 4 | Atara Biotherapeutics, Inc. (ATRA) jointly with Panacea Innovation Ltd | Sale (S): 313,446 @ $10.10 | EDGAR |
| 2026-04-01 | 4 | Connect Biopharma Holdings Ltd (CNTB) | Purchase (P): 1,160,000 @ $3.45 | EDGAR |
| 2026-03-19 | 4 | Atara Biotherapeutics, Inc. (ATRA) jointly with Panacea Innovation Ltd | Option exercise (M): 259,163 @ $0.00 · Tax withholding (F): 5 @ $5.23 · Option exercise (M): 259,163 (derivative) @ $6.61 | EDGAR |
| 2026-01-14 | 4 | Atara Biotherapeutics, Inc. (ATRA) jointly with Panacea Innovation Ltd | Sale (S): 80,554 @ $6.07 | EDGAR |
| 2025-12-01 | 4 | Atara Biotherapeutics, Inc. (ATRA) jointly with Panacea Innovation Ltd | Option exercise (M): 48,737 @ $0.00 · Tax withholding (F): 1 @ $14.03 · Option exercise (M): 48,737 (derivative) @ $6.61 | EDGAR |
| 2025-08-19 | 4 | Atara Biotherapeutics, Inc. (ATRA) jointly with Panacea Innovation Ltd | Purchase (P): 55,000 @ $12.19 | EDGAR |
| 2025-07-21 | 4 | Atara Biotherapeutics, Inc. (ATRA) jointly with Panacea Innovation Ltd | Purchase (P): 19,335 @ $9.64 | 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.
Need this as JSON?
GET https://api.filingpulse.io/v1/insider-trades?owner_cik=1573160 returns every filing on this page — normalized, with footnotes and derivative legs — and webhooks push new filings to you in seconds. API docs →