Lu Hongbo — SEC Form 4 filings
SEC reporting owner CIK 1767584. 17 Form 4 filings on record with FilingPulse; latest filed 2026-06-17.
Transaction summary — filings shown
Covers all 17 filings on record, filed 2024-03-20 to 2026-06-17. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): 11 legs across 7 filings — 964,749 shares, $14,237,867 total (shares × price as filed).
- Open-market sales (code S, non-derivative): 1 leg across 1 filing — 2,970 shares, $228,334 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 9.
- Largest priced transaction: purchase of 263,160 shares @ $19.00 ($5,000,040) in Zenas BioPharma, Inc., filed 2025-10-09.
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 |
|---|---|---|---|---|---|
| Zenas BioPharma, Inc. (ZBIO) | Director | 8 | 6 legs · 485,559 sh · $9,154,882 | — | 3 |
| Terns Pharmaceuticals, Inc. (TERN) | Director | 5 | 2 legs · 476,190 sh · $4,999,995 | — | 4 |
| ARROWHEAD PHARMACEUTICALS, INC. (ARWR) | Director | 4 | 3 legs · 3,000 sh · $82,990 | 1 leg · 2,970 sh · $228,334 | 2 |
Form 4 filings — Lu Hongbo
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-06-17 | 4 | Zenas BioPharma, Inc. (ZBIO) | Grant/award (A): 18,500 (derivative) @ $0 | EDGAR |
| 2026-05-14 | 4 | ARROWHEAD PHARMACEUTICALS, INC. (ARWR) | Sale (S): 2,970 @ $76.88 | EDGAR |
| 2026-04-02 | 4 | Zenas BioPharma, Inc. (ZBIO) | Purchase (P): 3,768 @ $18.63 | EDGAR |
| 2026-03-31 | 4 | Zenas BioPharma, Inc. (ZBIO) | Purchase (P): 75,000 @ $20 | EDGAR |
| 2026-02-13 | 4 | Zenas BioPharma, Inc. (ZBIO) | Purchase (P): 25,985 @ $22.50 | EDGAR |
| 2025-12-18 | 4 | ARROWHEAD PHARMACEUTICALS, INC. (ARWR) | Grant/award (A): 7,819 @ $0 | EDGAR |
| 2025-10-09 | 4 | Zenas BioPharma, Inc. (ZBIO) | Purchase (P): 58,823 @ $17 · Purchase (P): 263,160 @ $19 | EDGAR |
| 2025-06-12 | 4 | Zenas BioPharma, Inc. (ZBIO) | Grant/award (A): 18,500 (derivative) @ $0 | EDGAR |
| 2025-06-12 | 4 | Terns Pharmaceuticals, Inc. (TERN) | Grant/award (A): 45,000 (derivative) @ $0 | EDGAR |
| 2025-02-03 | 4 | Terns Pharmaceuticals, Inc. (TERN) | Grant/award (A): 10,657 (derivative) @ $0 | EDGAR |
| 2024-12-20 | 4 | ARROWHEAD PHARMACEUTICALS, INC. (ARWR) | Grant/award (A): 16,733 @ $22.99 | EDGAR |
| 2024-09-17 | 4 | Terns Pharmaceuticals, Inc. (TERN) | Purchase (P): 190,476 @ $10.50 · Purchase (P): 285,714 @ $10.50 | EDGAR |
| 2024-09-17 | 4 | Zenas BioPharma, Inc. (ZBIO) | Purchase (P): 58,823 @ $17 | EDGAR |
| 2024-09-16 | 4 | Zenas BioPharma, Inc. (ZBIO) | Grant/award (A): 37,000 (derivative) @ $0 | EDGAR |
| 2024-07-02 | 4 | Terns Pharmaceuticals, Inc. (TERN) | Grant/award (A): 4,676 (derivative) @ $0 | EDGAR |
| 2024-06-14 | 4 | Terns Pharmaceuticals, Inc. (TERN) | Grant/award (A): 32,000 (derivative) @ $0 | EDGAR |
| 2024-03-20 | 4 | ARROWHEAD PHARMACEUTICALS, INC. (ARWR) | Purchase (P): 1,000 @ $27.49 · Purchase (P): 1,000 @ $28 · Purchase (P): 1,000 @ $27.50 | 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=1767584 returns every filing on this page — normalized, with footnotes and derivative legs — and webhooks push new filings to you in seconds. API docs →