8 insiders reported 228 Form 4 transactions for Sensei Biotherapeutics, Inc. (SNSE) over the past 18 months (most recent 2026-06-01). Recent activity: Peyer James (Insider) Sell 24,524 shares, Cambrian BioPharma Inc (Insider) Sell 24,524 shares, Cambrian BioPharma Inc (Insider) Sell 476 shares, Peyer James (Insider) Sell 476 shares, MILLENNIUM MANAGEMENT LLC (Insider) Buy 1,327 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-01 | Peyer James | Insider | Sell | 24,524 | $490,480 |
| 2026-06-01 | Cambrian BioPharma Inc | Insider | Sell | 24,524 | $490,480 |
| 2026-06-01 | Cambrian BioPharma Inc | Insider | Sell | 476 | $10,063 |
| 2026-06-01 | Peyer James | Insider | Sell | 476 | $10,063 |
| 2026-05-15 | MILLENNIUM MANAGEMENT LLC | Insider | Buy | 1,327 | $37,085 |
| 2026-05-15 | ICS OPPORTUNITIES II LLC | Insider | Buy | 778 | $21,182 |
| 2026-05-15 | ICS OPPORTUNITIES II LLC | Insider | Buy | 26 | $870 |
| 2026-05-15 | ICS OPPORTUNITIES II LLC | Insider | Buy | 616 | $15,206 |
| 2026-05-15 | MILLENNIUM GROUP MANAGEMENT LLC | Insider | Buy | 26 | $870 |
| 2026-05-15 | MILLENNIUM GROUP MANAGEMENT LLC | Insider | Buy | 616 | $15,206 |
| 2026-05-15 | ENGLANDER ISRAEL A | Insider | Buy | 778 | $21,182 |
| 2026-05-15 | MILLENNIUM GROUP MANAGEMENT LLC | Insider | Buy | 778 | $21,182 |
| 2026-05-15 | MILLENNIUM MANAGEMENT LLC | Insider | Buy | 778 | $21,182 |
| 2026-05-15 | ENGLANDER ISRAEL A | Insider | Buy | 616 | $15,206 |
| 2026-05-15 | MILLENNIUM MANAGEMENT LLC | Insider | Buy | 616 | $15,206 |
| 2026-05-15 | ENGLANDER ISRAEL A | Insider | Buy | 26 | $870 |
| 2026-05-15 | ICS OPPORTUNITIES II LLC | Insider | Buy | 1,327 | $37,085 |
| 2026-05-15 | MILLENNIUM MANAGEMENT LLC | Insider | Buy | 1,770 | $44,818 |
| 2026-05-15 | MILLENNIUM MANAGEMENT LLC | Insider | Buy | 1,276 | $44,344 |
| 2026-05-15 | ENGLANDER ISRAEL A | Insider | Buy | 1,770 | $44,818 |
| 2026-05-15 | MILLENNIUM GROUP MANAGEMENT LLC | Insider | Buy | 1,327 | $37,085 |
| 2026-05-15 | ICS OPPORTUNITIES II LLC | Insider | Buy | 1,276 | $44,344 |
| 2026-05-15 | MILLENNIUM MANAGEMENT LLC | Insider | Buy | 26 | $870 |
| 2026-05-15 | MILLENNIUM GROUP MANAGEMENT LLC | Insider | Buy | 1,770 | $44,818 |
| 2026-05-15 | ENGLANDER ISRAEL A | Insider | Buy | 1,327 | $37,085 |
Source: SEC Form 4 filings · as of 2026-06-01