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 |
|---|---|---|---|---|---|---|
| Nov 12, 2025 | George Robert E. | Director | Grant(A) | 150K | — | — |
| Nov 12, 2025 | Climaco John M | Director | Grant(A) | 150K | — | — |
| Nov 12, 2025 | Cannon Michael D | Director | Grant(A) | 150K | — | — |
| Nov 12, 2025 | Cermak Elizabeth | Director | Grant(A) | 150K | — | — |
| Nov 12, 2025 | Yan Joy | Director | Grant(A) | 150K | — | — |
| Nov 12, 2025 | Klemp Walter V | CEO and President, Director | Grant(A) | 830K | — | — |
| Nov 12, 2025 | Klemp Walter V | CEO and President, Director | Grant(A) | 750K | — | — |
| Nov 12, 2025 | Foster Jonathan P. | EVP & CFO | Grant(A) | 600K | — | — |
| Nov 12, 2025 | Foster Jonathan P. | EVP & CFO | Grant(A) | 400K | — | — |
| Nov 12, 2025 | Picker Donald H | CSO | Grant(A) | 200K | — | — |
| Nov 12, 2025 | Picker Donald H | CSO | Grant(A) | 200K | — | — |
| Nov 4, 2025 | Foster Jonathan P. | Chief Financial Officer | Option exercise(M) | 21K | — | — |
| Nov 4, 2025 | Foster Jonathan P. | Chief Financial Officer | Option exercise(M) | 5K | $0.50 | $3K |
| Nov 4, 2025 | Foster Jonathan P. | Chief Financial Officer | Option exercise(M) | 21K | — | $0 |
| Nov 4, 2025 | Klemp Walter V | CEO and President, Director | Option exercise(M) | 29K | — | — |
| Nov 4, 2025 | Klemp Walter V | CEO and President, Director | Tax withholding(F) | 7K | $0.50 | $4K |
| Nov 4, 2025 | Klemp Walter V | CEO and President, Director | Option exercise(M) | 29K | — | $0 |
| Nov 4, 2025 | Picker Donald H | Chief Science Officer | Tax withholding(F) | 2K | $0.50 | $1K |
| Nov 4, 2025 | Picker Donald H | Chief Science Officer | Option exercise(M) | 9K | — | — |
| Nov 4, 2025 | Picker Donald H | Chief Science Officer | Option exercise(M) | 9K | — | $0 |
| Jun 23, 2025 | Klemp Walter V | CEO and President, Director | Buy(P) | 676K | $0.37 | $250K |
| Jun 23, 2025 | Klemp Walter V | CEO and President, Director | Buy(P) | 2.0M | — | — |
| Jun 23, 2025 | Foster Jonathan P. | Chief Financial Officer | Buy(P) | 270K | $0.37 | $100K |
| Jun 23, 2025 | Foster Jonathan P. | Chief Financial Officer | Buy(P) | 811K | — | — |
| Jun 22, 2025 | Picker Donald H | Chief Science Officer | Tax withholding(F) | 430 | $0.27 | $116 |
| Jun 22, 2025 | Picker Donald H | Chief Science Officer | Option exercise(M) | 2K | — | — |
| Jun 22, 2025 | Picker Donald H | Chief Science Officer | Option exercise(M) | 2K | — | $0 |
| Jun 22, 2025 | Klemp Walter V | CEO and President, Director | Tax withholding(F) | 2K | $0.27 | $591 |
| Jun 22, 2025 | Klemp Walter V | CEO and President, Director | Option exercise(M) | 9K | — | — |
| Jun 22, 2025 | Klemp Walter V | CEO and President, Director | Option exercise(M) | 9K | — | $0 |
| Jun 22, 2025 | Foster Jonathan P. | Chief Financial Officer | Tax withholding(F) | 1K | $0.27 | $285 |
| Jun 22, 2025 | Foster Jonathan P. | Chief Financial Officer | Option exercise(M) | 4K | — | — |
| Jun 22, 2025 | Foster Jonathan P. | Chief Financial Officer | Option exercise(M) | 4K | — | $0 |
| Jun 20, 2025 | Picker Donald H | Chief Science Officer | Option exercise(M) | 1K | — | — |
| Jun 20, 2025 | Picker Donald H | Chief Science Officer | Tax withholding(F) | 263 | $0.27 | $71 |
| Jun 20, 2025 | Picker Donald H | Chief Science Officer | Option exercise(M) | 1K | — | $0 |
| Jun 20, 2025 | Klemp Walter V | CEO and President, Director | Option exercise(M) | 4K | — | — |
| Jun 20, 2025 | Klemp Walter V | CEO and President, Director | Tax withholding(F) | 914 | $0.27 | $247 |
| Jun 20, 2025 | Klemp Walter V | CEO and President, Director | Option exercise(M) | 4K | — | $0 |
| Jun 20, 2025 | Foster Jonathan P. | Chief Financial Officer | Option exercise(M) | 3K | — | — |
| Jun 20, 2025 | Foster Jonathan P. | Chief Financial Officer | Tax withholding(F) | 661 | $0.27 | $178 |
| Jun 20, 2025 | Foster Jonathan P. | Chief Financial Officer | Option exercise(M) | 3K | — | $0 |
| Jun 16, 2025 | Klemp Walter V | CEO and President, Director | Option exercise(M) | 2K | — | — |
| Jun 16, 2025 | Klemp Walter V | CEO and President, Director | Tax withholding(F) | 406 | $0.69 | $280 |
| Jun 16, 2025 | Klemp Walter V | CEO and President, Director | Option exercise(M) | 2K | — | $0 |
| Jun 16, 2025 | Foster Jonathan P. | Chief Financial Officer | Tax withholding(F) | 203 | $0.69 | $140 |
| Jun 16, 2025 | Foster Jonathan P. | Chief Financial Officer | Option exercise(M) | 833 | — | — |
| Jun 16, 2025 | Foster Jonathan P. | Chief Financial Officer | Option exercise(M) | 833 | — | $0 |
| Nov 4, 2024 | Klemp Walter V | CEO and President, Director | Grant(A) | 100K | — | — |
| Nov 4, 2024 | Klemp Walter V | CEO and President, Director | Grant(A) | 115K | — | — |
| Nov 4, 2024 | Foster Jonathan P. | Chief Financial Officer | Grant(A) | 83K | — | — |
| Nov 4, 2024 | Foster Jonathan P. | Chief Financial Officer | Grant(A) | 65K | — | — |
| Nov 4, 2024 | Picker Donald H | Chief Science Officer | Grant(A) | 40K | — | — |
| Nov 4, 2024 | Picker Donald H | Chief Science Officer | Grant(A) | 35K | — | — |
| Nov 4, 2024 | Cannon Michael D | Director | Grant(A) | 10K | — | — |
| Nov 4, 2024 | George Robert E. | Director | Grant(A) | 10K | — | — |
| Nov 4, 2024 | Climaco John M | Director | Grant(A) | 10K | — | — |
| Nov 4, 2024 | Cermak Elizabeth | Director | Grant(A) | 10K | — | — |
| Nov 4, 2024 | Yan Joy | Director | Grant(A) | 10K | — | — |
| Oct 25, 2024 | Klemp Walter V | CEO and President, Director | Grant(A) | 44K | — | — |
| Oct 25, 2024 | Foster Jonathan P. | Chief Financial Officer | Grant(A) | 19K | — | — |
| Oct 25, 2024 | Picker Donald H | Chief Science Officer | Grant(A) | 6K | — | — |
| Jul 2, 2024 | Klemp Walter V | CEO and President, Director | Tax withholding(F) | 240 | $3.57 | $857 |
| Jul 2, 2024 | Klemp Walter V | CEO and President, Director | Option exercise(M) | 982 | — | — |
| Jul 2, 2024 | Klemp Walter V | CEO and President, Director | Option exercise(M) | 982 | — | $0 |
| Jun 22, 2024 | Klemp Walter V | CEO and President, Director | Tax withholding(F) | 2K | $3.74 | $8K |
| Jun 22, 2024 | Klemp Walter V | CEO and President, Director | Option exercise(M) | 9K | — | — |
| Jun 22, 2024 | Klemp Walter V | CEO and President, Director | Option exercise(M) | 9K | — | $0 |
| Jun 22, 2024 | Foster Jonathan P. | Chief Financial Officer | Tax withholding(F) | 1K | $3.74 | $4K |
| Jun 22, 2024 | Foster Jonathan P. | Chief Financial Officer | Option exercise(M) | 4K | — | — |
| Jun 22, 2024 | Foster Jonathan P. | Chief Financial Officer | Option exercise(M) | 4K | — | $0 |
| Jun 22, 2024 | Picker Donald H | Chief Science Officer | Option exercise(M) | 2K | — | — |
| Jun 22, 2024 | Picker Donald H | Chief Science Officer | Tax withholding(F) | 524 | $3.74 | $2K |
| Jun 22, 2024 | Picker Donald H | Chief Science Officer | Option exercise(M) | 2K | — | $0 |
| Jun 20, 2024 | Klemp Walter V | CEO and President, Director | Option exercise(M) | 4K | — | — |
| Jun 20, 2024 | Klemp Walter V | CEO and President, Director | Tax withholding(F) | 914 | $3.78 | $3K |
| Jun 20, 2024 | Klemp Walter V | CEO and President, Director | Option exercise(M) | 4K | — | $0 |
| Jun 20, 2024 | Foster Jonathan P. | Chief Financial Officer | Option exercise(M) | 3K | — | — |
| Jun 20, 2024 | Foster Jonathan P. | Chief Financial Officer | Tax withholding(F) | 636 | $3.78 | $2K |
| Jun 20, 2024 | Foster Jonathan P. | Chief Financial Officer | Option exercise(M) | 3K | — | $0 |
| Jun 20, 2024 | Picker Donald H | Chief Science Officer | Option exercise(M) | 1K | — | — |
| Jun 20, 2024 | Picker Donald H | Chief Science Officer | Tax withholding(F) | 320 | $3.78 | $1K |
| Jun 20, 2024 | Picker Donald H | Chief Science Officer | Option exercise(M) | 1K | — | $0 |
| Jun 16, 2024 | Klemp Walter V | CEO and President, Director | Option exercise(M) | 2K | — | — |
| Jun 16, 2024 | Klemp Walter V | CEO and President, Director | Tax withholding(F) | 406 | $4.14 | $2K |
| Jun 16, 2024 | Klemp Walter V | CEO and President, Director | Option exercise(M) | 2K | — | $0 |
| Jun 16, 2024 | Foster Jonathan P. | Chief Financial Officer | Option exercise(M) | 834 | — | — |
| Jun 16, 2024 | Foster Jonathan P. | Chief Financial Officer | Tax withholding(F) | 196 | $4.14 | $811 |
| Jun 16, 2024 | Foster Jonathan P. | Chief Financial Officer | Option exercise(M) | 834 | — | $0 |
| Dec 26, 2023 | Klemp Walter V | CEO and President, Director | Buy(P) | 188K | $0.69 | $130K |
| Dec 26, 2023 | George Robert E. | Director | Buy(P) | 14K | $0.69 | $10K |
| Dec 26, 2023 | Foster Jonathan P. | Chief Financial Officer | Buy(P) | 29K | $0.69 | $20K |
| Jul 11, 2023 | Klemp Walter V | CEO and President, Director | Option exercise(M) | 13K | — | $0 |
| Jul 11, 2023 | Klemp Walter V | CEO and President, Director | Tax withholding(F) | 3K | $0.59 | $2K |
| Jul 11, 2023 | Klemp Walter V | CEO and President, Director | Option exercise(M) | 13K | — | — |
| Jul 2, 2023 | Klemp Walter V | CEO and President, Director | Option exercise(M) | 15K | — | — |
| Jul 2, 2023 | Klemp Walter V | CEO and President, Director | Tax withholding(F) | 4K | $0.58 | $2K |
| Jul 2, 2023 | Klemp Walter V | CEO and President, Director | Option exercise(M) | 15K | — | $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.
Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).