The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
| Date | Insider | Role | Action | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jul 9, 2026 | Pierce Anthony T | Director | Grant(A) | 17K | — | $0 |
| Jul 9, 2026 | Pierce Anthony T | Director | Grant(A) | 8K | — | $0 |
| Jun 2, 2026 | Lee Howard | Director | Tax withholding(F) | 769 | $18.45 | $14K |
| Jun 1, 2026 | Prins Richard K | Director | Grant(A) | 8K | — | $0 |
| Jun 1, 2026 | Prins Richard K | Director | Grant(A) | 17K | — | $0 |
| Jun 1, 2026 | Lee Howard | Director | Grant(A) | 8K | — | $0 |
| Jun 1, 2026 | Lee Howard | Director | Grant(A) | 17K | — | $0 |
| Jun 1, 2026 | Zasloff Michael A | Director | Grant(A) | 8K | — | $0 |
| Jun 1, 2026 | Zasloff Michael A | Director | Grant(A) | 17K | — | $0 |
| Jun 1, 2026 | Gerst Diane G. | Director | Grant(A) | 8K | — | $0 |
| Jun 1, 2026 | Gerst Diane G. | Director | Grant(A) | 17K | — | $0 |
| Jun 1, 2026 | Gaugh David Russell | Director | Grant(A) | 8K | — | $0 |
| Jun 1, 2026 | Gaugh David Russell | Director | Grant(A) | 17K | — | $0 |
| Jun 1, 2026 | Deflin Gayle | Director | Grant(A) | 8K | — | $0 |
| Jun 1, 2026 | Deflin Gayle | Director | Grant(A) | 17K | — | $0 |
| Mar 15, 2026 | Zhang Jack Y. | CEO & CHIEF SCIENTIFIC OFFICER, Director, 10% Owner | Tax withholding(F) | 10K | $18.18 | $178K |
| Mar 15, 2026 | Zhang Jack Y. | CEO & CHIEF SCIENTIFIC OFFICER, Director, 10% Owner | Tax withholding(F) | 3K | $18.18 | $53K |
| Mar 15, 2026 | Peters William J | CFO, EVP & TREASURER, Director | Tax withholding(F) | 2K | $18.18 | $36K |
| Mar 15, 2026 | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | Tax withholding(F) | 1K | $18.18 | $22K |
| Mar 15, 2026 | Liawatidewi Yakob | EVP CORP ADMIN CENTER, Director | Tax withholding(F) | 1K | $18.18 | $19K |
| Mar 10, 2026 | Zhang Jack Y. | CEO & CHIEF SCIENTIFIC OFFICER, Director, 10% Owner | Tax withholding(F) | 4K | $18.91 | $83K |
| Mar 10, 2026 | Zhang Jack Y. | CEO & CHIEF SCIENTIFIC OFFICER, Director, 10% Owner | Tax withholding(F) | 15K | $18.91 | $280K |
| Mar 10, 2026 | Peters William J | CFO, EVP & TREASURER, Director | Tax withholding(F) | 3K | $18.91 | $62K |
| Mar 10, 2026 | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | Tax withholding(F) | 2K | $18.91 | $42K |
| Mar 10, 2026 | Liawatidewi Yakob | EVP CORP ADMIN CENTER, Director | Tax withholding(F) | 2K | $18.91 | $35K |
| Mar 9, 2026 | Zhang Jack Y. | CEO & CHIEF SCIENTIFIC OFFICER, Director, 10% Owner | Grant(A) | 181K | — | $0 |
| Mar 9, 2026 | Zhang Jack Y. | CEO & CHIEF SCIENTIFIC OFFICER, Director, 10% Owner | Grant(A) | 72K | — | $0 |
| Mar 9, 2026 | Zhang Jack Y. | CEO & CHIEF SCIENTIFIC OFFICER, Director, 10% Owner | Grant(A) | 372K | — | $0 |
| Mar 9, 2026 | Zhang Jack Y. | CEO & CHIEF SCIENTIFIC OFFICER, Director, 10% Owner | Grant(A) | 149K | — | $0 |
| Mar 9, 2026 | Peters William J | CFO, EVP & TREASURER, Director | Grant(A) | 59K | — | $0 |
| Mar 9, 2026 | Peters William J | CFO, EVP & TREASURER, Director | Grant(A) | 121K | — | $0 |
| Mar 9, 2026 | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | Grant(A) | 39K | — | $0 |
| Mar 9, 2026 | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | Grant(A) | 81K | — | $0 |
| Mar 9, 2026 | Liawatidewi Yakob | EVP CORP ADMIN CENTER, Director | Grant(A) | 35K | — | $0 |
| Mar 9, 2026 | Liawatidewi Yakob | EVP CORP ADMIN CENTER, Director | Grant(A) | 73K | — | $0 |
| Mar 6, 2026 | Luo Mary Z. | COO, Chief Scientist, Chairman, Director, 10% Owner | Tax withholding(F) | 3K | $19.34 | $60K |
| Mar 6, 2026 | Luo Mary Z. | COO, Chief Scientist, Chairman, Director, 10% Owner | Tax withholding(F) | 8K | $19.34 | $150K |
| Mar 6, 2026 | Peters William J | CFO, EVP & TREASURER, Director | Tax withholding(F) | 2K | $19.34 | $42K |
| Mar 6, 2026 | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | Tax withholding(F) | 1K | $19.34 | $26K |
| Mar 6, 2026 | Liawatidewi Yakob | EVP CORP ADMIN CENTER, Director | Tax withholding(F) | 1K | $19.34 | $22K |
| Mar 4, 2026 | Zhang Jack Y. | CEO & CHIEF SCIENTIFIC OFFICER, Director, 10% Owner | Tax withholding(F) | 6K | $19.96 | $115K |
| Mar 4, 2026 | Zhang Jack Y. | CEO & CHIEF SCIENTIFIC OFFICER, Director, 10% Owner | Tax withholding(F) | 2K | $19.96 | $49K |
| Mar 4, 2026 | Peters William J | CFO, EVP & TREASURER, Director | Tax withholding(F) | 2K | $19.96 | $35K |
| Mar 4, 2026 | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | Tax withholding(F) | 1K | $19.96 | $22K |
| Mar 4, 2026 | Liawatidewi Yakob | EVP CORP ADMIN CENTER, Director | Tax withholding(F) | 965 | $19.96 | $19K |
| Dec 17, 2025 | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | Option exercise(M) | 10K | $11.33 | $111K |
| Dec 17, 2025 | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | Sell(S) | 10K | $26.20 | $256K |
| Dec 17, 2025 | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | Option exercise(M) | 10K | — | $0 |
| Dec 12, 2025 | Petersen Floyd F. | Director | Sell(S) | 2K | $25.92 | $63K |
| Dec 11, 2025 | Petersen Floyd F. | Director | Sell(S) | 2K | $25.69 | $45K |
| Nov 25, 2025 | Prins Richard K | Director | Sell(S) | 4K | $27.10 | $113K |
| Nov 25, 2025 | Prins Richard K | Director | Option exercise(M) | 4K | $16.69 | $70K |
| Nov 25, 2025 | Prins Richard K | Director | Option exercise(M) | 4K | — | $0 |
| Nov 13, 2025 | Petersen Floyd F. | Director | Sell(S) | 17K | $26.49 | $442K |
| Nov 13, 2025 | Petersen Floyd F. | Director | Option exercise(M) | 17K | $16.69 | $278K |
| Nov 13, 2025 | Petersen Floyd F. | Director | Option exercise(M) | 17K | — | $0 |
| Nov 3, 2025 | Petersen Floyd F. | Director | Sell(S) | 500 | $25.27 | $13K |
| Oct 1, 2025 | Petersen Floyd F. | Director | Sell(S) | 500 | $27.20 | $14K |
| Sep 2, 2025 | Petersen Floyd F. | Director | Sell(S) | 500 | $30.98 | $15K |
| Aug 1, 2025 | Petersen Floyd F. | Director | Sell(S) | 500 | $20.83 | $10K |
| Jul 18, 2025 | Gaugh David Russell | Director | Grant(A) | 6K | — | $0 |
| Jul 18, 2025 | Gaugh David Russell | Director | Grant(A) | 14K | — | $0 |
| Jul 2, 2025 | Petersen Floyd F. | Director | Sell(S) | 500 | $23.47 | $12K |
| Jun 13, 2025 | Zhang Jack Y. | CEO & CHIEF SCIENTIFIC OFFICER, Director, 10% Owner | Option exercise(M) | 200K | $13.03 | $2.6M |
| Jun 13, 2025 | Zhang Jack Y. | CEO & CHIEF SCIENTIFIC OFFICER, Director, 10% Owner | Option exercise(M) | 200K | — | $0 |
| Jun 3, 2025 | Lee Howard | Director | Tax withholding(F) | 923 | $26.01 | $24K |
| Jun 2, 2025 | Zasloff Michael A | Director | Grant(A) | 5K | — | $0 |
| Jun 2, 2025 | Zasloff Michael A | Director | Grant(A) | 11K | — | $0 |
| Jun 2, 2025 | Petersen Floyd F. | Director | Grant(A) | 5K | — | $0 |
| Jun 2, 2025 | Petersen Floyd F. | Director | Sell(S) | 500 | $25.67 | $13K |
| Jun 2, 2025 | Petersen Floyd F. | Director | Grant(A) | 11K | — | $0 |
| Jun 2, 2025 | Prins Richard K | Director | Grant(A) | 5K | — | $0 |
| Jun 2, 2025 | Prins Richard K | Director | Grant(A) | 11K | — | $0 |
| Jun 2, 2025 | Gerst Diane G. | Director | Grant(A) | 5K | — | $0 |
| Jun 2, 2025 | Gerst Diane G. | Director | Grant(A) | 11K | — | $0 |
| Jun 2, 2025 | Deflin Gayle | Director | Grant(A) | 5K | — | $0 |
| Jun 2, 2025 | Deflin Gayle | Director | Grant(A) | 11K | — | $0 |
| Jun 2, 2025 | Lee Howard | Director | Grant(A) | 5K | — | $0 |
| Jun 2, 2025 | Lee Howard | Director | Grant(A) | 11K | — | $0 |
| May 19, 2025 | Peters William J | CFO, EVP & TREASURER, Director | Tax withholding(F) | 273 | $24.79 | $7K |
| May 1, 2025 | Petersen Floyd F. | Director | Sell(S) | 500 | $24.08 | $12K |
| Apr 1, 2025 | Petersen Floyd F. | Director | Sell(S) | 500 | $28.38 | $14K |
| Mar 17, 2025 | Peters William J | CFO, EVP & TREASURER, Director | Tax withholding(F) | 3K | $27.69 | $83K |
| Mar 17, 2025 | Liawatidewi Yakob | EVP CORP ADMIN CENTER, Director | Tax withholding(F) | 2K | $27.69 | $48K |
| Mar 17, 2025 | Zhang Jack Y. | CEO & CHIEF SCIENTIFIC OFFICER, Director, 10% Owner | Tax withholding(F) | 7K | $27.69 | $200K |
| Mar 17, 2025 | Zhang Jack Y. | CEO & CHIEF SCIENTIFIC OFFICER, Director, 10% Owner | Tax withholding(F) | 16K | $27.69 | $447K |
| Mar 17, 2025 | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | Tax withholding(F) | 2K | $27.69 | $54K |
| Mar 15, 2025 | Peters William J | CFO, EVP & TREASURER, Director | Tax withholding(F) | 2K | $26.66 | $52K |
| Mar 15, 2025 | Liawatidewi Yakob | EVP CORP ADMIN CENTER, Director | Tax withholding(F) | 1K | $26.66 | $27K |
| Mar 15, 2025 | Zhang Jack Y. | CEO & CHIEF SCIENTIFIC OFFICER, Director, 10% Owner | Tax withholding(F) | 10K | $26.66 | $260K |
| Mar 15, 2025 | Zhang Jack Y. | CEO & CHIEF SCIENTIFIC OFFICER, Director, 10% Owner | Tax withholding(F) | 4K | $26.66 | $110K |
| Mar 15, 2025 | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | Tax withholding(F) | 1K | $26.66 | $33K |
| Mar 14, 2025 | Zhang Jack Y. | CEO & CHIEF SCIENTIFIC OFFICER, Director, 10% Owner | Option exercise(M) | 290K | $14.69 | $4.3M |
| Mar 14, 2025 | Zhang Jack Y. | CEO & CHIEF SCIENTIFIC OFFICER, Director, 10% Owner | Tax withholding(F) | 226K | $26.66 | $6.0M |
| Mar 14, 2025 | Zhang Jack Y. | CEO & CHIEF SCIENTIFIC OFFICER, Director, 10% Owner | Option exercise(M) | 211K | $14.69 | $3.1M |
| Mar 14, 2025 | Zhang Jack Y. | CEO & CHIEF SCIENTIFIC OFFICER, Director, 10% Owner | Tax withholding(F) | 163K | $26.66 | $4.3M |
| Mar 14, 2025 | Zhang Jack Y. | CEO & CHIEF SCIENTIFIC OFFICER, Director, 10% Owner | Option exercise(M) | 290K | — | $0 |
| Mar 14, 2025 | Zhang Jack Y. | CEO & CHIEF SCIENTIFIC OFFICER, Director, 10% Owner | Option exercise(M) | 211K | — | $0 |
| Mar 10, 2025 | Zhang Jack Y. | CEO & CHIEF SCIENTIFIC OFFICER, Director, 10% Owner | Grant(A) | 116K | — | $0 |
| Mar 10, 2025 | Zhang Jack Y. | CEO & CHIEF SCIENTIFIC OFFICER, Director, 10% Owner | Grant(A) | 49K | — | $0 |
Insider transactions sourced from SEC EDGAR Form 4 filings, normalized within minutes of acceptance. "Buy"/"Sell" mark open-market transactions (codes P/S), the tradeable signal. Awards, option exercises and tax-withholding are shown with their raw code. All data is public domain.
Coverage: Form 4 filings indexed 2021-01-04 → 2026-07-21. Earlier history is backfilling; this window widens as it deepens.
Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).