secwatch.observer — SEC 8-K summary ====================================== Issuer: Sensei Biotherapeutics, Inc. (SNSE) CIK: 0001829802 Form: 8-K Filed at: 2026-05-21T21:12:40+00:00 Accession: 0001193125-26-234882 Event type: other_material Sentiment: neutral Materiality: 0.85 Item codes: 8.01, 9.01 LLM model: deepseek-v4-flash:cloud@v2 Sensei Biotherapeutics schedules June 10 vote on Series B conversion that would trigger change of control -------------------------------------------------------------------------------- - Annual meeting on June 10, 2026 to vote on conversion of Series B Preferred Stock into common stock. - Conversion would issue ~24.4M shares, representing >20% of outstanding and result in change of control per Nasdaq rules. - Pro forma shows reclassification of $321.9M from preferred stock to equity; net loss per share improves from $131.45 to $6.62. - Conversion contingent on stockholder approval; if approved, occurs three business days after vote. Source: EDGAR index: https://www.sec.gov/Archives/edgar/data/1829802/000119312526234882/0001193125-26-234882-index.htm Primary doc: https://www.sec.gov/Archives/edgar/data/1829802/000119312526234882/d162035d8k.htm HTML page: https://secwatch.observer/filing/0001193125-26-234882 License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer