# Tourmaline Bio Inc. (TRML) Source: https://www.quantisnow.com/company/TRML Generated: 2026-11-12T00:18:57.326Z - Ticker: TRML - Exchange: NASDAQ - Sector: Health Care - Industry: Biotechnology: Biological Products (No Diagnostic Substances) - IPO year: 2021 ## Latest TRML news and filings - 2025-11-17 05:15 UTC [SEC Form EFFECT] [SEC Form EFFECT filed by Tourmaline Bio Inc.](https://www.quantisnow.com/insight/sec-form-effect-filed-by-tourmaline-bio-inc-6281865) - 2025-11-17 05:15 UTC [SEC Form EFFECT] [SEC Form EFFECT filed by Tourmaline Bio Inc.](https://www.quantisnow.com/insight/sec-form-effect-filed-by-tourmaline-bio-inc-6281855) - 2025-11-14 21:19 UTC [Amendment: SEC Form SCHEDULE 13G/A filed by Tourmaline Bio Inc.](https://www.quantisnow.com/insight/amendment-sec-form-schedule-13ga-filed-by-tourmaline-bio-inc-6280734) - 2025-11-07 13:46 UTC [SEC Form 15-12G filed by Tourmaline Bio Inc.](https://www.quantisnow.com/insight/sec-form-15-12g-filed-by-tourmaline-bio-inc-6267489) - 2025-10-28 22:30 UTC [SEC Form 4] [SEC Form 4 filed by Director Siegall Clay B](https://www.quantisnow.com/insight/sec-form-4-filed-by-director-siegall-clay-b-6248551) - 2025-10-28 22:30 UTC [SEC Form 4] [Director Mcdade Mark closing all direct ownership in the company (SEC Form 4)](https://www.quantisnow.com/insight/director-mcdade-mark-closing-all-direct-ownership-in-the-company-6248550) - 2025-10-28 22:30 UTC [SEC Form 4] [Director Kantoff Aaron closing all direct ownership in the company (SEC Form 4)](https://www.quantisnow.com/insight/director-kantoff-aaron-closing-all-direct-ownership-in-the-company-6248549) - 2025-10-28 22:30 UTC [SEC Form 4] [Director Thiara Parvinder closing all direct ownership in the company (SEC Form 4)](https://www.quantisnow.com/insight/director-thiara-parvinder-closing-all-direct-ownership-in-the-company-6248548) - 2025-10-28 22:30 UTC [SEC Form 4] [Director Castelein Caley closing all direct ownership in the company (SEC Form 4)](https://www.quantisnow.com/insight/director-castelein-caley-closing-all-direct-ownership-in-the-company-6248547) - 2025-10-28 22:30 UTC [SEC Form 4] [Director Srivastava Sapna closing all direct ownership in the company (SEC Form 4)](https://www.quantisnow.com/insight/director-srivastava-sapna-closing-all-direct-ownership-in-the-company-6248546) - 2025-10-28 22:30 UTC [SEC Form 4] [Chief Regulatory Officer Johnson Kevin Bruce returned 11,046 shares to the company, closing all direct ownership in the company (SEC Form 4)](https://www.quantisnow.com/insight/chief-regulatory-officer-johnson-kevin-bruce-returned-11046-shares-to-6248545) - 2025-10-28 22:30 UTC [SEC Form 4] [CBO, GC and Secretary Middlekauff W Bradford returned 8,213 shares to the company, closing all direct ownership in the company (SEC Form 4)](https://www.quantisnow.com/insight/cbo-gc-and-secretary-middlekauff-w-bradford-returned-8213-shares-6248544) - 2025-10-28 22:30 UTC [SEC Form 4] [CFO Robinson Ryan F. closing all direct ownership in the company (SEC Form 4)](https://www.quantisnow.com/insight/cfo-robinson-ryan-f-closing-all-direct-ownership-in-the-6248543) - 2025-10-28 22:30 UTC [SEC Form 4] [CEO Kulkarni Sandeep Chidambar returned 30,387 shares to the company, closing all direct ownership in the company (SEC Form 4)](https://www.quantisnow.com/insight/ceo-kulkarni-sandeep-chidambar-returned-30387-shares-to-the-company-6248542) - 2025-10-28 22:30 UTC [SEC Form 4] [Chief Technology Officer Jones Susan Dana returned 3,152 shares to the company, closing all direct ownership in the company (SEC Form 4)](https://www.quantisnow.com/insight/chief-technology-officer-jones-susan-dana-returned-3152-shares-to-6248541) - 2025-10-28 16:12 UTC [SEC Form 3] [New insider Novartis Ag claimed ownership of 24,030,382 shares (SEC Form 3)](https://www.quantisnow.com/insight/new-insider-novartis-ag-claimed-ownership-of-24030382-shares-sec-6247514) - 2025-10-28 15:08 UTC [SEC Form S-8 POS] [SEC Form S-8 POS filed by Tourmaline Bio Inc.](https://www.quantisnow.com/insight/sec-form-s-8-pos-filed-by-tourmaline-bio-inc-6247468) - 2025-10-28 15:08 UTC [SEC Form S-8 POS] [SEC Form S-8 POS filed by Tourmaline Bio Inc.](https://www.quantisnow.com/insight/sec-form-s-8-pos-filed-by-tourmaline-bio-inc-6247467) - 2025-10-28 15:07 UTC [SEC Form S-8 POS] [SEC Form S-8 POS filed by Tourmaline Bio Inc.](https://www.quantisnow.com/insight/sec-form-s-8-pos-filed-by-tourmaline-bio-inc-6247466) - 2025-10-28 15:07 UTC [SEC Form S-8 POS] [SEC Form S-8 POS filed by Tourmaline Bio Inc.](https://www.quantisnow.com/insight/sec-form-s-8-pos-filed-by-tourmaline-bio-inc-6247465) - 2025-10-28 15:06 UTC [SEC Form S-8 POS] [SEC Form S-8 POS filed by Tourmaline Bio Inc.](https://www.quantisnow.com/insight/sec-form-s-8-pos-filed-by-tourmaline-bio-inc-6247463) - 2025-10-28 15:05 UTC [SEC Form S-8 POS] [SEC Form S-8 POS filed by Tourmaline Bio Inc.](https://www.quantisnow.com/insight/sec-form-s-8-pos-filed-by-tourmaline-bio-inc-6247462) - 2025-10-28 15:01 UTC [SEC Form POS AM filed by Tourmaline Bio Inc.](https://www.quantisnow.com/insight/sec-form-pos-am-filed-by-tourmaline-bio-inc-6247457) - 2025-10-28 14:59 UTC [SEC Form POS AM filed by Tourmaline Bio Inc.](https://www.quantisnow.com/insight/sec-form-pos-am-filed-by-tourmaline-bio-inc-6247448) - 2025-10-28 14:43 UTC [SEC Form 8-K] [Tourmaline Bio Inc. filed SEC Form 8-K: Termination of a Material Definitive Agreement, Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing, Changes in Control of Registrant, Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Completion of Acquisition or Disposition of Assets, Material Modification to Rights of Security Holders, Leadership Update, Financial Statements and Exhibits](https://www.quantisnow.com/insight/tourmaline-bio-inc-filed-sec-form-8-k-termination-of-a-6247439) - 2025-10-28 14:28 UTC [SEC Schedule 14D-9] [Amendment: SEC Form SC 14D9/A filed by Tourmaline Bio Inc.](https://www.quantisnow.com/insight/amendment-sec-form-sc-14d9a-filed-by-tourmaline-bio-inc-6247423) - 2025-10-28 14:08 UTC [SEC Schedule TOT] [Amendment: SEC Form SC TO-T/A filed by Tourmaline Bio Inc.](https://www.quantisnow.com/insight/amendment-sec-form-sc-to-ta-filed-by-tourmaline-bio-inc-6247407) - 2025-10-28 12:57 UTC [SEC Form 25-NSE filed by Tourmaline Bio Inc.](https://www.quantisnow.com/insight/sec-form-25-nse-filed-by-tourmaline-bio-inc-6247268) - 2025-10-24 22:10 UTC [SEC Form 4] [Director Kantoff Aaron gifted 5,000 shares, decreasing direct ownership by 5% to 88,281 units (SEC Form 4)](https://www.quantisnow.com/insight/director-kantoff-aaron-gifted-5000-shares-decreasing-direct-ownership-by-6244932) - 2025-10-24 21:08 UTC [SEC Form 4] [CFO Robinson Ryan F. exercised 14,366 shares at a strike of $13.92 (SEC Form 4)](https://www.quantisnow.com/insight/cfo-robinson-ryan-f-exercised-14366-shares-at-a-strike-6244857) - 2025-10-24 21:05 UTC [SEC Form 4] [CEO Kulkarni Sandeep Chidambar exercised 25,316 shares at a strike of $7.90, increasing direct ownership by 3% to 755,051 units (SEC Form 4)](https://www.quantisnow.com/insight/ceo-kulkarni-sandeep-chidambar-exercised-25316-shares-at-a-strike-6244847) - 2025-10-22 13:05 UTC [SEC Schedule 14D-9] [Amendment: SEC Form SC 14D9/A filed by Tourmaline Bio Inc.](https://www.quantisnow.com/insight/amendment-sec-form-sc-14d9a-filed-by-tourmaline-bio-inc-6241219) - 2025-10-22 12:06 UTC [SEC Schedule TOT] [Amendment: SEC Form SC TO-T/A filed by Tourmaline Bio Inc.](https://www.quantisnow.com/insight/amendment-sec-form-sc-to-ta-filed-by-tourmaline-bio-inc-6241036) - 2025-10-20 12:55 UTC [SEC Schedule 14D-9] [Amendment: SEC Form SC 14D9/A filed by Tourmaline Bio Inc.](https://www.quantisnow.com/insight/amendment-sec-form-sc-14d9a-filed-by-tourmaline-bio-inc-6238387) - 2025-10-20 12:36 UTC [SEC Schedule TOT] [Amendment: SEC Form SC TO-T/A filed by Tourmaline Bio Inc.](https://www.quantisnow.com/insight/amendment-sec-form-sc-to-ta-filed-by-tourmaline-bio-inc-6238329) - 2025-10-17 21:50 UTC [SEC Form 4] [Director Castelein Caley gifted 522 shares, decreasing direct ownership by 0.10% to 515,997 units (SEC Form 4)](https://www.quantisnow.com/insight/director-castelein-caley-gifted-522-shares-decreasing-direct-ownership-by-6237453) - 2025-10-17 20:30 UTC [SEC Form 4] [Chief Regulatory Officer Johnson Kevin Bruce gifted 6,250 shares, decreasing direct ownership by 11% to 51,584 units (SEC Form 4)](https://www.quantisnow.com/insight/chief-regulatory-officer-johnson-kevin-bruce-gifted-6250-shares-decreasing-6237130) - 2025-09-29 11:23 UTC [SEC Schedule 14D-9] [SEC Form SC 14D9 filed by Tourmaline Bio Inc.](https://www.quantisnow.com/insight/sec-form-sc-14d9-filed-by-tourmaline-bio-inc-6213753) - 2025-09-29 10:53 UTC [SEC Schedule TOT] [SEC Form SC TO-T filed by Tourmaline Bio Inc.](https://www.quantisnow.com/insight/sec-form-sc-to-t-filed-by-tourmaline-bio-inc-6213693) - 2025-09-26 20:05 UTC [SEC Form SC14D9C filed by Tourmaline Bio Inc.](https://www.quantisnow.com/insight/sec-form-sc14d9c-filed-by-tourmaline-bio-inc-6212947) ## More - Live page with ratings, short volume, options and peers: https://www.quantisnow.com/company/TRML - Earnings history: https://www.quantisnow.com/earnings/TRML - Dividend history: https://www.quantisnow.com/dividends/TRML - Insider transactions: https://www.quantisnow.com/insiders/TRML - Options chain: https://www.quantisnow.com/options/TRML - SEC 8-K filings only: https://www.quantisnow.com/company/TRML/8-k - RSS and alerts for TRML: https://www.quantisnow.com/docs/rss-feeds.md