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 |
|---|---|---|---|---|---|---|
| Aug 25, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Sell(S) | 1K | $154.45 | $169K |
| Aug 25, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Sell(S) | 9K | $153.93 | $1.4M |
| Aug 25, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Sell(S) | 6K | $152.75 | $979K |
| Aug 25, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Sell(S) | 12K | $151.36 | $1.9M |
| Aug 25, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Sell(S) | 13K | $150.56 | $1.9M |
| Aug 24, 2026 | Werner Robert F. | Chief Accounting Officer | Sell(S) | 854 | $140.77 | $120K |
| Aug 21, 2026 | Werner Robert F. | Chief Accounting Officer | Sell(S) | 669 | $139.07 | $93K |
| Aug 21, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Sell(S) | 7K | $139.07 | $923K |
| Aug 21, 2026 | Laponis Adam | Chief Financial Officer | Sell(S) | 2K | $139.07 | $273K |
| Aug 21, 2026 | Green Paula | SVP of Human Resources | Sell(S) | 1K | $139.07 | $189K |
| Aug 21, 2026 | Finn Patrick John | President and COO | Sell(S) | 4K | $139.07 | $563K |
| Aug 21, 2026 | Cho Dennis | See Remarks | Sell(S) | 2K | $139.07 | $222K |
| Aug 19, 2026 | Cho Dennis | See Remarks | Sell(S) | 14K | $129.75 | $1.8M |
| Aug 18, 2026 | Finn Patrick John | President and COO | Option exercise(M) | 23K | — | $0 |
| Aug 18, 2026 | Finn Patrick John | President and COO | Sell(S) | 2K | $122.58 | $245K |
| Aug 18, 2026 | Finn Patrick John | President and COO | Sell(S) | 6K | $121.01 | $762K |
| Aug 18, 2026 | Finn Patrick John | President and COO | Sell(S) | 13K | $119.86 | $1.5M |
| Aug 18, 2026 | Finn Patrick John | President and COO | Sell(S) | 5K | $119.04 | $536K |
| Aug 18, 2026 | Finn Patrick John | President and COO | Sell(S) | 9K | $117.70 | $1.0M |
| Aug 18, 2026 | Finn Patrick John | President and COO | Sell(S) | 10K | $116.82 | $1.2M |
| Aug 18, 2026 | Finn Patrick John | President and COO | Sell(S) | 33K | $115.90 | $3.9M |
| Aug 18, 2026 | Finn Patrick John | President and COO | Option exercise(M) | 23K | $67.85 | $1.6M |
| Aug 12, 2026 | Blake Katryn | Director | Sell(S) | 2K | $122.88 | $275K |
| Aug 12, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Option exercise(M) | 20K | $26.66 | $532K |
| Aug 12, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Sell(S) | 20K | $125.08 | $2.5M |
| Aug 12, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Option exercise(M) | 20K | — | $0 |
| Aug 10, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Option exercise(M) | 113K | $26.66 | $3.0M |
| Aug 10, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Sell(S) | 113K | $125.16 | $14.2M |
| Aug 10, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Option exercise(M) | 113K | — | $0 |
| Aug 7, 2026 | Chess Robert | Director | Option exercise(M) | 18K | $11.89 | $219K |
| Aug 7, 2026 | Chess Robert | Director | Sell(S) | 18K | $110.89 | $2.0M |
| Aug 7, 2026 | Chess Robert | Director | Option exercise(M) | 18K | — | $0 |
| Aug 5, 2026 | Cho Dennis | See Remarks | Sell(S) | 14K | $109.75 | $1.6M |
| Aug 3, 2026 | Finn Patrick John | President and COO | Sell(S) | 3K | $85.32 | $246K |
| Aug 3, 2026 | Green Paula | SVP of Human Resources | Sell(S) | 1K | $85.32 | $97K |
| Aug 3, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Sell(S) | 5K | $85.32 | $435K |
| Aug 3, 2026 | Werner Robert F. | Chief Accounting Officer | Sell(S) | 167 | $85.32 | $14K |
| Aug 3, 2026 | Cho Dennis | See Remarks | Sell(S) | 1K | $85.32 | $91K |
| Jul 23, 2026 | Finn Patrick John | President and COO | Sell(S) | 2K | $93.89 | $210K |
| Jul 9, 2026 | Laponis Adam | Chief Financial Officer | Sell(S) | 2K | $94.33 | $226K |
| Jun 25, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Sell(S) | 19K | $95.00 | $1.8M |
| Jun 24, 2026 | Cho Dennis | See Remarks | Sell(S) | 14K | $89.75 | $1.3M |
| Jun 22, 2026 | Cho Dennis | See Remarks | Sell(S) | 346 | $87.32 | $30K |
| Jun 22, 2026 | Green Paula | SVP of Human Resources | Sell(S) | 291 | $87.32 | $25K |
| Jun 22, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Sell(S) | 2K | $87.32 | $147K |
| Jun 15, 2026 | Green Paula | SVP of Human Resources | Option exercise(M) | 26K | $23.33 | $610K |
| Jun 15, 2026 | Green Paula | SVP of Human Resources | Sell(S) | 24K | $81.62 | $2.0M |
| Jun 15, 2026 | Green Paula | SVP of Human Resources | Sell(S) | 2K | $82.17 | $167K |
| Jun 15, 2026 | Green Paula | SVP of Human Resources | Option exercise(M) | 26K | — | $0 |
| Jun 8, 2026 | Cho Dennis | See Remarks | Sell(S) | 402 | $69.84 | $28K |
| Jun 8, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Sell(S) | 2K | $69.84 | $158K |
| Jun 8, 2026 | Green Paula | SVP of Human Resources | Sell(S) | 884 | $69.84 | $62K |
| Jun 8, 2026 | Werner Robert F. | Chief Accounting Officer | Sell(S) | 232 | $69.84 | $16K |
| Jun 8, 2026 | Werner Robert F. | Chief Accounting Officer | Sell(S) | 1K | $69.07 | $78K |
| Jun 8, 2026 | Werner Robert F. | Chief Accounting Officer | Gift(G) | 500 | — | $0 |
| May 29, 2026 | Cho Dennis | See Remarks | Sell(S) | 14K | $69.75 | $991K |
| May 29, 2026 | Laponis Adam | Chief Financial Officer | Sell(S) | 4K | $70.00 | $280K |
| May 28, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Option exercise(M) | 16K | $8.82 | $145K |
| May 28, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Sell(S) | 1K | $65.33 | $97K |
| May 28, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Sell(S) | 900 | $66.85 | $60K |
| May 28, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Sell(S) | 8K | $67.95 | $518K |
| May 28, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Sell(S) | 6K | $68.61 | $444K |
| May 28, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Option exercise(M) | 16K | — | $0 |
| May 28, 2026 | Starovasnik Melissa A. | Director | Sell(S) | 3K | $68.00 | $170K |
| May 27, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Option exercise(M) | 25K | $8.82 | $221K |
| May 27, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Sell(S) | 24K | $65.24 | $1.5M |
| May 27, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Sell(S) | 1K | $66.28 | $84K |
| May 27, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Option exercise(M) | 25K | — | $0 |
| May 26, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Option exercise(M) | 24K | $8.82 | $214K |
| May 26, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Sell(S) | 24K | $65.08 | $1.6M |
| May 26, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Option exercise(M) | 24K | — | $0 |
| May 26, 2026 | Werner Robert F. | Chief Accounting Officer | Sell(S) | 800 | $62.48 | $50K |
| May 26, 2026 | Starovasnik Melissa A. | Director | Sell(S) | 500 | $61.04 | $31K |
| May 21, 2026 | Cho Dennis | See Remarks | Sell(S) | 2K | $53.26 | $87K |
| May 21, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Sell(S) | 7K | $53.26 | $367K |
| May 21, 2026 | Laponis Adam | Chief Financial Officer | Sell(S) | 2K | $53.26 | $108K |
| May 21, 2026 | Finn Patrick John | President and COO | Sell(S) | 4K | $53.26 | $222K |
| May 21, 2026 | Green Paula | SVP of Human Resources | Sell(S) | 1K | $53.26 | $75K |
| May 21, 2026 | Werner Robert F. | Chief Accounting Officer | Sell(S) | 688 | $53.26 | $37K |
| May 12, 2026 | Johannessen Jan | Director | Option exercise(M) | 12K | $14.00 | $168K |
| May 12, 2026 | Johannessen Jan | Director | Sell(S) | 12K | $56.12 | $673K |
| May 12, 2026 | Johannessen Jan | Director | Option exercise(M) | 12K | — | $0 |
| May 8, 2026 | Werner Robert F. | Chief Accounting Officer | Sell(S) | 5K | $56.88 | $282K |
| May 4, 2026 | Cho Dennis | See Remarks | Sell(S) | 2K | $57.15 | $112K |
| May 4, 2026 | Finn Patrick John | President and COO | Sell(S) | 3K | $57.15 | $163K |
| May 4, 2026 | Green Paula | SVP of Human Resources | Sell(S) | 1K | $57.15 | $64K |
| May 4, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Sell(S) | 5K | $57.15 | $293K |
| May 4, 2026 | Werner Robert F. | Chief Accounting Officer | Sell(S) | 164 | $57.15 | $9K |
| Apr 27, 2026 | Starovasnik Melissa A. | Director | Sell(S) | 500 | $61.83 | $31K |
| Apr 23, 2026 | Finn Patrick John | President and COO | Sell(S) | 2K | $60.76 | $141K |
| Apr 22, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Option exercise(M) | 8K | $8.82 | $71K |
| Apr 22, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Sell(S) | 8K | $65.28 | $516K |
| Apr 22, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Sell(S) | 151 | $66.00 | $10K |
| Apr 22, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Option exercise(M) | 8K | — | $0 |
| Apr 21, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Option exercise(M) | 2K | $8.82 | $14K |
| Apr 21, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Sell(S) | 2K | $65.01 | $105K |
| Apr 21, 2026 | Leproust Emily M. | Chief Executive Officer, Director | Option exercise(M) | 2K | — | $0 |
| Apr 17, 2026 | Laponis Adam | Chief Financial Officer | Sell(S) | 4K | $60.00 | $240K |
| Apr 14, 2026 | Laponis Adam | Chief Financial Officer | Sell(S) | 3K | $55.00 | $165K |
| Apr 9, 2026 | Laponis Adam | Chief Financial Officer | Sell(S) | 3K | $49.89 | $130K |
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 2006-01-02 → 2026-09-03. 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 TWST