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 1, 2026 | Patience David | Chief Financial Officer | Tax withholding(F) | 15K | $4.46 | $65K |
| Jun 30, 2026 | Marshak Richard | Chief Commercial Officer | Grant(A) | 561 | $3.87 | $2K |
| Jun 30, 2026 | Szela Mary T | CEO and President, Director | Grant(A) | 4K | $3.87 | $15K |
| Jun 29, 2026 | Marshall Richard Henry | Chief Medical Officer | Grant(A) | 60K | — | $0 |
| Jun 29, 2026 | Marshall Richard Henry | Chief Medical Officer | Grant(A) | 120K | — | $0 |
| May 15, 2026 | Gordon Gary B. | Director | Buy(P) | 10K | $2.46 | $25K |
| May 15, 2026 | Patience David | Chief Financial Officer | Buy(P) | 7K | $2.43 | $17K |
| May 15, 2026 | Szela Mary T | CEO and President, Director | Buy(P) | 40K | $2.59 | $103K |
| May 15, 2026 | Wahlstrom Mats | Director | Buy(P) | 60K | $2.53 | $152K |
| May 15, 2026 | Stansky Michael P | Director | Buy(P) | 410K | $2.50 | $1.0M |
| May 15, 2026 | Stansky Michael P | Director | Buy(P) | 200K | $2.50 | $500K |
| May 15, 2026 | Marshak Richard | Chief Commercial Officer | Sell(S) | 543 | $2.67 | $1K |
| May 14, 2026 | Hicks Kerry R | Director | Grant(A) | 28K | — | $0 |
| May 14, 2026 | Hicks Kerry R | Director | Grant(A) | 56K | — | $0 |
| May 14, 2026 | Gordon Gary B. | Director | Grant(A) | 28K | — | $0 |
| May 14, 2026 | Gordon Gary B. | Director | Grant(A) | 25K | — | $0 |
| May 14, 2026 | Gordon Gary B. | Director | Grant(A) | 56K | — | $0 |
| May 14, 2026 | Matlin David J | Director | Grant(A) | 28K | — | $0 |
| May 14, 2026 | Matlin David J | Director | Grant(A) | 23K | — | $0 |
| May 14, 2026 | Matlin David J | Director | Grant(A) | 56K | — | $0 |
| May 14, 2026 | Stansky Michael P | Director | Grant(A) | 24K | — | $0 |
| May 14, 2026 | Stansky Michael P | Director | Grant(A) | 20K | — | $0 |
| May 14, 2026 | Stansky Michael P | Director | Grant(A) | 47K | — | $0 |
| May 14, 2026 | Valle William | Director | Grant(A) | 28K | — | $0 |
| May 14, 2026 | Valle William | Director | Grant(A) | 25K | — | $0 |
| May 14, 2026 | Valle William | Director | Grant(A) | 56K | — | $0 |
| May 14, 2026 | Wahlstrom Mats | Director | Grant(A) | 38K | — | $0 |
| May 14, 2026 | Wahlstrom Mats | Director | Grant(A) | 34K | — | $0 |
| May 14, 2026 | Wahlstrom Mats | Director | Grant(A) | 75K | — | $0 |
| Mar 17, 2026 | Szela Mary T | CEO and President, Director | Sell(S) | 16K | $3.85 | $61K |
| Mar 16, 2026 | Stevens Jennifer | Chief Regulatory Officer | Sell(S) | 774 | $4.12 | $3K |
| Mar 16, 2026 | Marshak Richard | Chief Commercial Officer | Sell(S) | 419 | $4.12 | $2K |
| Mar 16, 2026 | Cox Bryan F. | Chief of Research | Sell(S) | 579 | $4.12 | $2K |
| Mar 16, 2026 | Devlin Jodi | Chief of Clinical Operations | Sell(S) | 273 | $4.12 | $1K |
| Mar 12, 2026 | Stevens Jennifer | Chief Regulatory Officer | Sell(S) | 2K | $4.09 | $6K |
| Mar 12, 2026 | Marshak Richard | Chief Commercial Officer | Sell(S) | 2K | $4.09 | $6K |
| Mar 12, 2026 | Cox Bryan F. | Chief of Research | Sell(S) | 1K | $4.09 | $6K |
| Mar 12, 2026 | Devlin Jodi | Chief of Clinical Operations | Sell(S) | 2K | $4.09 | $7K |
| Mar 11, 2026 | Szela Mary T | CEO and President, Director | Sell(S) | 4K | $4.13 | $18K |
| Mar 11, 2026 | Stevens Jennifer | Chief Regulatory Officer | Sell(S) | 1K | $4.13 | $5K |
| Mar 11, 2026 | Marshak Richard | Chief Commercial Officer | Sell(S) | 1K | $4.13 | $6K |
| Mar 11, 2026 | Cox Bryan F. | Chief of Research | Sell(S) | 1K | $4.13 | $5K |
| Mar 11, 2026 | Devlin Jodi | Chief of Clinical Operations | Sell(S) | 1K | $4.13 | $5K |
| Feb 23, 2026 | Stansky Michael P | Director | Buy(P) | 244K | $4.10 | $1000K |
| Feb 23, 2026 | Stansky Michael P | Director | Buy(P) | 117K | $4.10 | $481K |
| Feb 23, 2026 | Szela Mary T | CEO and President, Director | Buy(P) | 30K | $4.10 | $125K |
| Feb 23, 2026 | Valle William | Director | Buy(P) | 30K | $4.10 | $125K |
| Feb 23, 2026 | Gordon Gary B. | Director | Buy(P) | 10K | $4.10 | $40K |
| Feb 23, 2026 | Patience David | Chief Financial Officer | Buy(P) | 4K | $4.10 | $15K |
| Feb 4, 2026 | Stansky Michael P | Director | Grant(A) | 93K | — | $0 |
| Nov 24, 2025 | Szela Mary T | CEO and President, Director | Grant(A) | 300K | — | $0 |
| Nov 24, 2025 | Szela Mary T | CEO and President, Director | Grant(A) | 125K | — | $0 |
| Nov 24, 2025 | Szela Mary T | CEO and President, Director | Grant(A) | 250K | — | $0 |
| Nov 24, 2025 | Patience David | Chief Financial Officer | Grant(A) | 65K | — | $0 |
| Nov 24, 2025 | Patience David | Chief Financial Officer | Grant(A) | 130K | — | $0 |
| Nov 24, 2025 | Cox Bryan F. | Chief of Research | Grant(A) | 40K | — | $0 |
| Nov 24, 2025 | Cox Bryan F. | Chief of Research | Grant(A) | 80K | — | $0 |
| Nov 24, 2025 | Stevens Jennifer | Chief Regulatory Officer | Grant(A) | 50K | — | $0 |
| Nov 24, 2025 | Stevens Jennifer | Chief Regulatory Officer | Grant(A) | 100K | — | $0 |
| Nov 24, 2025 | Marshak Richard | Chief Commercial Officer | Grant(A) | 60K | — | $0 |
| Nov 24, 2025 | Marshak Richard | Chief Commercial Officer | Grant(A) | 120K | — | $0 |
| Nov 24, 2025 | Devlin Jodi | Chief of Clinical Operations | Grant(A) | 50K | — | $0 |
| Nov 24, 2025 | Devlin Jodi | Chief of Clinical Operations | Grant(A) | 100K | — | $0 |
| Aug 28, 2025 | Patience David | Chief Financial Officer | Grant(A) | 249K | — | $0 |
| Aug 14, 2025 | Patience David | Chief Financial Officer | Grant(A) | 200K | — | $0 |
| Aug 14, 2025 | Patience David | Chief Financial Officer | Grant(A) | 290K | — | $0 |
| Jul 31, 2025 | Matlin David J | Director | Conversion(C) | 330K | — | $0 |
| Jul 31, 2025 | Matlin David J | Director | Conversion(C) | 100K | — | $0 |
| Jul 31, 2025 | Frankenius Equity AB | 10% Owner | Conversion(C) | 759K | — | $0 |
| Jul 31, 2025 | Frankenius Equity AB | 10% Owner | Conversion(C) | 230K | — | $0 |
| Jun 12, 2025 | Wahlstrom Mats | Director | Grant(A) | 15K | — | $0 |
| Jun 12, 2025 | Valle William | Director | Grant(A) | 15K | — | $0 |
| Jun 12, 2025 | Murphy Sean | Director | Grant(A) | 15K | — | $0 |
| Jun 12, 2025 | Matlin David J | Director | Grant(A) | 15K | — | $0 |
| Jun 12, 2025 | Hicks Kerry R | Director | Grant(A) | 15K | — | $0 |
| Jun 12, 2025 | Gordon Gary B. | Director | Grant(A) | 15K | — | $0 |
| Jun 12, 2025 | Desai Arjun JJ | Director | Grant(A) | 15K | — | $0 |
| May 19, 2025 | Stevens Jennifer | Chief Regulatory Officer | Grant(A) | 28K | $5.18 | $147K |
| May 19, 2025 | Stevens Jennifer | Chief Regulatory Officer | Sell(S) | 9K | $5.18 | $45K |
| May 19, 2025 | Murphy Sean | Director | Grant(A) | 45K | $5.18 | $232K |
| May 19, 2025 | Marshak Richard | Chief Commercial Officer | Sell(S) | 7K | $5.18 | $34K |
| May 19, 2025 | Marshak Richard | Chief Commercial Officer | Grant(A) | 21K | $5.18 | $111K |
| May 19, 2025 | Devlin Jodi | Chief of Clinical Operations | Grant(A) | 24K | $5.18 | $125K |
| May 19, 2025 | Devlin Jodi | Chief of Clinical Operations | Sell(S) | 5K | $5.18 | $25K |
| May 19, 2025 | Cox Bryan F. | Chief of Research | Grant(A) | 16K | $5.18 | $81K |
| May 19, 2025 | Cox Bryan F. | Chief of Research | Sell(S) | 5K | $5.18 | $25K |
| May 19, 2025 | Young James Emmett | Chief Financial Officer | Grant(A) | 13K | $5.18 | $68K |
| Feb 18, 2025 | Devlin Jodi | Chief of Clinical Operations | Grant(A) | 5K | — | $0 |
| Feb 18, 2025 | Szela Mary T | CEO AND PRESIDENT, Director | Grant(A) | 21K | — | $0 |
| Feb 18, 2025 | Marshak Richard | Chief Commercial Officer | Grant(A) | 8K | — | $0 |
| Feb 18, 2025 | Cox Bryan F. | CHIEF OF RESEARCH | Grant(A) | 11K | — | $0 |
| Feb 18, 2025 | Stevens Jennifer | CHIEF REGULATORY OFFICER | Grant(A) | 14K | — | $0 |
| Feb 18, 2025 | Young James Emmett | Chief Financial Officer | Grant(A) | 15K | — | $0 |
| Feb 18, 2025 | Murphy Sean | Chief Manuf, Strategy&Bus Dev., Director | Grant(A) | 16K | — | $0 |
| Feb 10, 2025 | Frankenius Equity AB | 10% Owner | Other(J) | 206K | — | $0 |
| Feb 10, 2025 | Wahlstrom Mats | Director, 10% Owner | Other(J) | 45K | — | $0 |
| Feb 10, 2025 | Matlin David J | Director | Other(J) | 90K | — | $0 |
| Feb 5, 2025 | Young James Emmett | Chief Financial Officer | Buy(P) | 6K | $5.65 | $34K |
| Jan 30, 2025 | Szela Mary T | CEO AND PRESIDENT, Director | Buy(P) | 5K | $5.28 | $26K |
| Jan 29, 2025 | Szela Mary T | CEO AND PRESIDENT, Director | Buy(P) | 5K | $5.03 | $25K |
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 2019-12-30 → 2026-08-06. Earlier history is backfilling; this window widens as it deepens.
Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).
Connected pages for TLSI