SEC Filings for Sensei Biotherapeutics, Inc. (SNSE)

Last updated: 2026-03-30 23:17 UTC | Total filings: 380

Browse the latest SEC filings and forms submitted by Sensei Biotherapeutics, Inc. (SNSE). Access annual reports, quarterly statements, and other official disclosures.

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Form Filing Date Description Link
10-K March 30, 2026 10-K View Document
8-K March 30, 2026 8-K View Document
D March 4, 2026 - View Document
SCHEDULE 13G Feb. 25, 2026 - View Document
144 Feb. 24, 2026 - View Document
3 Feb. 19, 2026 - View Document
4 Feb. 19, 2026 - View Document
144 Feb. 18, 2026 - View Document
8-K Feb. 18, 2026 8-K View Document
3 Feb. 17, 2026 - View Document
4 Feb. 17, 2026 - View Document
8-K Feb. 13, 2026 8-K View Document
144 Jan. 27, 2026 - View Document
8-K Dec. 23, 2025 8-K View Document
4 Dec. 10, 2025 - View Document
4 Dec. 10, 2025 - View Document
144 Dec. 9, 2025 - View Document
4 Dec. 8, 2025 - View Document
4 Dec. 8, 2025 - View Document
144 Dec. 4, 2025 - View Document
144 Dec. 4, 2025 - View Document
3 Nov. 24, 2025 - View Document
10-Q Nov. 14, 2025 10-Q View Document
8-K Nov. 14, 2025 8-K View Document
8-K Oct. 30, 2025 8-K View Document
8-K Oct. 17, 2025 8-K View Document
10-Q Aug. 5, 2025 10-Q View Document
8-K Aug. 5, 2025 8-K View Document
8-K July 9, 2025 8-K View Document
8-K June 13, 2025 8-K View Document
4 May 23, 2025 - View Document
4 May 23, 2025 - View Document
8-K May 23, 2025 8-K View Document
4 May 23, 2025 - View Document
4 May 23, 2025 - View Document
4 May 23, 2025 - View Document
4 May 23, 2025 - View Document
8-K May 6, 2025 8-K View Document
10-Q May 6, 2025 10-Q View Document
DEF 14A April 11, 2025 DEF 14A View Document
DEFA14A April 11, 2025 DEFA14A View Document
ARS April 11, 2025 ARS View Document
PRE 14A April 1, 2025 PRE 14A View Document
S-8 March 28, 2025 S-8 View Document
10-K March 28, 2025 10-K View Document
8-K March 28, 2025 8-K View Document
8-K March 27, 2025 8-K View Document
4 Feb. 26, 2025 - View Document
4 Feb. 26, 2025 - View Document
4 Feb. 14, 2025 - View Document
4 Feb. 14, 2025 - View Document
4 Feb. 14, 2025 - View Document
4 Feb. 14, 2025 - View Document
8-K Jan. 7, 2025 8-K View Document
4 Dec. 23, 2024 - View Document
4 Dec. 23, 2024 - View Document
4 Dec. 23, 2024 - View Document
4 Dec. 23, 2024 - View Document
10-Q Nov. 14, 2024 10-Q View Document
8-K Nov. 14, 2024 8-K View Document
8-K Oct. 30, 2024 8-K View Document
3 Sept. 26, 2024 - View Document
8-K Sept. 20, 2024 8-K View Document
10-Q Aug. 6, 2024 10-Q View Document
8-K Aug. 6, 2024 8-K View Document
8-K July 12, 2024 8-K View Document
8-K June 27, 2024 8-K View Document
4 June 13, 2024 - View Document
4 June 13, 2024 - View Document
4 June 13, 2024 - View Document
4 June 13, 2024 - View Document
4 June 13, 2024 - View Document
4 June 13, 2024 - View Document
8-K June 13, 2024 8-K View Document
4 June 13, 2024 - View Document
4 June 13, 2024 - View Document
8-K June 3, 2024 8-K View Document
8-K May 23, 2024 8-K View Document
3 May 16, 2024 - View Document
10-Q May 9, 2024 10-Q View Document
8-K May 9, 2024 8-K View Document
ARS April 29, 2024 ARS View Document
DEF 14A April 29, 2024 DEF 14A View Document
DEFA14A April 29, 2024 DEFA14A View Document
8-K April 12, 2024 8-K View Document
8-K April 2, 2024 8-K View Document
SC 13D/A March 7, 2024 - View Document
8-K March 5, 2024 8-K View Document
10-K Feb. 29, 2024 10-K View Document
S-8 Feb. 29, 2024 S-8 View Document
8-K Feb. 28, 2024 8-K View Document
4 Feb. 16, 2024 - View Document
4 Feb. 16, 2024 - View Document
4 Feb. 16, 2024 - View Document
SC 13D/A Feb. 13, 2024 - View Document
8-K Feb. 8, 2024 8-K View Document
8-K Jan. 4, 2024 8-K View Document
10-Q Nov. 7, 2023 10-Q View Document
8-K Nov. 7, 2023 8-K View Document
8-K Nov. 6, 2023 8-K View Document
SC 13D Nov. 3, 2023 THE SCHEDULE 13D View Document
8-K Nov. 3, 2023 8-K View Document
4 Nov. 2, 2023 FORM 4 SUBMISSION View Document
3 Nov. 2, 2023 FORM 3 SUBMISSION View Document
8-K Oct. 20, 2023 8-K View Document
4 Sept. 13, 2023 FORM 4 SUBMISSION View Document
4 Sept. 11, 2023 FORM 4 SUBMISSION View Document
4 Sept. 11, 2023 FORM 4 SUBMISSION View Document
4 Sept. 11, 2023 FORM 4 SUBMISSION View Document
4 Sept. 11, 2023 FORM 4 SUBMISSION View Document
424B5 Aug. 17, 2023 424B5 View Document
SC 13G/A Aug. 4, 2023 - View Document
8-K Aug. 3, 2023 8-K View Document
10-Q Aug. 3, 2023 10-Q View Document
4 Aug. 2, 2023 - View Document
4 Aug. 2, 2023 - View Document
4 July 12, 2023 FORM 4 SUBMISSION View Document
4 July 12, 2023 FORM 4 SUBMISSION View Document
4 July 12, 2023 FORM 4 SUBMISSION View Document
4 July 12, 2023 FORM 4 SUBMISSION View Document
4 July 12, 2023 FORM 4 SUBMISSION View Document
4 July 12, 2023 FORM 4 SUBMISSION View Document
4 July 12, 2023 FORM 4 SUBMISSION View Document
4 July 12, 2023 FORM 4 SUBMISSION View Document
4 July 12, 2023 FORM 4 SUBMISSION View Document
8-K July 10, 2023 8-K View Document
8-K June 27, 2023 8-K View Document
8-K June 23, 2023 8-K View Document
ARS June 15, 2023 ARS View Document
DEF 14A June 15, 2023 DEF 14A View Document
SC 13D/A June 2, 2023 AMENDMENT NO. 5 TO THE SCHEDULE 13D View Document
4 June 2, 2023 OWNERSHIP DOCUMENT View Document
DEFA14A May 23, 2023 DEFA14A View Document
8-K May 23, 2023 8-K View Document
SC 13D/A May 23, 2023 AMENDMENT NO. 4 TO THE SCHEDULE 13D View Document
10-Q May 9, 2023 10-Q View Document
8-K May 9, 2023 8-K View Document
10-K/A May 1, 2023 10-K/A View Document
8-K April 20, 2023 8-K View Document
10-K March 29, 2023 10-K View Document
S-8 March 29, 2023 S-8 View Document
4/A March 29, 2023 FORM 4/A SUBMISSION View Document
4/A March 29, 2023 FORM 4/A SUBMISSION View Document
4/A March 29, 2023 FORM 4/A SUBMISSION View Document
8-K March 28, 2023 8-K View Document
8-K March 13, 2023 8-K View Document
8-K March 10, 2023 8-K View Document
DEFA14A March 10, 2023 DEFA14A View Document
SC 13D/A March 9, 2023 AMENDMENT NO. 3 TO THE SCHEDULE 13D View Document
8-K March 7, 2023 8-K View Document
4/A March 7, 2023 FORM 4/A View Document
8-A12B March 7, 2023 8-A12B View Document
4 Feb. 27, 2023 OWNERSHIP DOCUMENT View Document
4 Feb. 17, 2023 FORM 4 SUBMISSION View Document
4 Feb. 17, 2023 FORM 4 SUBMISSION View Document
4 Feb. 17, 2023 FORM 4 SUBMISSION View Document
4 Feb. 17, 2023 FORM 4 SUBMISSION View Document
SC 13G/A Feb. 14, 2023 - View Document
8-K Feb. 6, 2023 8-K View Document
3 Dec. 16, 2022 FORM 3 SUBMISSION View Document
8-K Dec. 9, 2022 8-K View Document
8-K Dec. 8, 2022 8-K View Document
SC 13D/A Nov. 21, 2022 AMENDMENT NO. 2 TO THE SCHEDULE 13D View Document
8-K Nov. 10, 2022 8-K View Document
10-Q Nov. 8, 2022 10-Q View Document
8-K Nov. 8, 2022 8-K View Document
SC 13D/A Nov. 2, 2022 AMENDMENT NO. 1 TO THE SCHEDULE 13D View Document
8-K Sept. 30, 2022 8-K View Document
4/A Sept. 1, 2022 FORM 4/A SUBMISSION View Document
8-K Aug. 31, 2022 8-K View Document
8-K Aug. 9, 2022 8-K View Document
10-Q Aug. 9, 2022 10-Q View Document
4/A Aug. 1, 2022 FORM 4/A View Document
3/A Aug. 1, 2022 FORM 3/A View Document
3 July 20, 2022 FORM 3 SUBMISSION View Document
SC 13D July 19, 2022 THE SCHEDULE 13D View Document
4 June 14, 2022 FORM 4 SUBMISSION View Document
4 June 14, 2022 FORM 4 SUBMISSION View Document
4 June 14, 2022 FORM 4 SUBMISSION View Document
4 June 14, 2022 FORM 4 SUBMISSION View Document
4 June 14, 2022 FORM 4 SUBMISSION View Document
4 June 14, 2022 FORM 4 SUBMISSION View Document
8-K June 14, 2022 8-K View Document
4 June 14, 2022 FORM 4 View Document
4 June 14, 2022 FORM 4 View Document
SC 13G/A June 10, 2022 - View Document
4/A June 10, 2022 FORM 4/A View Document
4/A June 10, 2022 FORM 4/A View Document
4 June 3, 2022 FORM 4 SUBMISSION View Document
3 June 3, 2022 FORM 3 SUBMISSION View Document
10-Q May 10, 2022 10-Q View Document
S-8 May 10, 2022 S-8 View Document
8-K May 10, 2022 8-K View Document
EFFECT May 9, 2022 - View Document
424B5 May 9, 2022 424B5 View Document
S-3/A May 9, 2022 S-3/A View Document
CORRESP May 6, 2022 - View Document
CORRESP May 6, 2022 - View Document
CORRESP May 4, 2022 - View Document
DEF 14A April 28, 2022 DEF 14A View Document
DEFA14A April 28, 2022 DEFA14A View Document
DEFA14A April 28, 2022 DEFA14A View Document
4/A April 21, 2022 FORM 4/A View Document
4/A April 21, 2022 FORM 4/A View Document
4/A April 21, 2022 FORM 4/A View Document
4/A April 21, 2022 FORM 4/A View Document
8-K April 20, 2022 8-K View Document
UPLOAD March 22, 2022 - View Document
10-K March 15, 2022 10-K View Document
S-3 March 15, 2022 S-3 View Document
8-K March 10, 2022 8-K View Document
8-K March 9, 2022 8-K View Document
3 March 9, 2022 FORM 3 SUBMISSION View Document
4 March 9, 2022 FORM 4 SUBMISSION View Document
4 March 2, 2022 FORM 4 View Document
4 March 2, 2022 FORM 4 View Document
4 March 1, 2022 FORM 4 View Document
4 March 1, 2022 FORM 4 View Document
4 Feb. 28, 2022 FORM 4 View Document
4 Feb. 28, 2022 FORM 4 View Document
4 Feb. 24, 2022 FORM 4 View Document
4 Feb. 24, 2022 FORM 4 View Document
4 Feb. 22, 2022 FORM 4 View Document
4 Feb. 22, 2022 FORM 4 View Document
4 Feb. 17, 2022 FORM 4 SUBMISSION View Document
4 Feb. 17, 2022 FORM 4 SUBMISSION View Document
4 Feb. 17, 2022 FORM 4 SUBMISSION View Document
4 Feb. 16, 2022 FORM 4 View Document
4 Feb. 16, 2022 FORM 4 View Document
4 Feb. 14, 2022 FORM 4 View Document
SC 13G Feb. 14, 2022 SC 13G View Document
4 Feb. 14, 2022 FORM 4 View Document
SC 13G/A Feb. 10, 2022 SC 13G/A View Document
4 Feb. 8, 2022 FORM 4 View Document
4 Feb. 8, 2022 FORM 4 View Document
4 Jan. 31, 2022 FORM 4 View Document
4 Jan. 31, 2022 FORM 4 View Document
4 Jan. 27, 2022 FORM 4 View Document
4 Jan. 27, 2022 FORM 4 View Document
4 Jan. 25, 2022 FORM 4 View Document
4 Jan. 25, 2022 FORM 4 View Document
4 Jan. 21, 2022 FORM 4 View Document
4 Jan. 21, 2022 FORM 4 View Document
4 Jan. 20, 2022 FORM 4 View Document
4 Jan. 20, 2022 FORM 4 View Document
4 Jan. 18, 2022 FORM 4 View Document
4 Jan. 18, 2022 FORM 4 View Document
4 Jan. 13, 2022 FORM 4 View Document
4 Jan. 13, 2022 FORM 4 View Document
4 Jan. 11, 2022 FORM 4 View Document
4 Jan. 11, 2022 FORM 4 View Document
8-K Jan. 10, 2022 8-K View Document
4 Jan. 3, 2022 FORM 4 View Document
4 Jan. 3, 2022 FORM 4 View Document
4 Dec. 30, 2021 FORM 4 View Document
4 Dec. 30, 2021 FORM 4 View Document
4 Dec. 29, 2021 FORM 4 View Document
4 Dec. 29, 2021 FORM 4 View Document
4 Dec. 27, 2021 FORM 4 View Document
4 Dec. 27, 2021 FORM 4 View Document
4 Dec. 23, 2021 FORM 4 View Document
4 Dec. 23, 2021 FORM 4 View Document
4 Dec. 21, 2021 FORM 4 View Document
4 Dec. 21, 2021 FORM 4 View Document
4 Dec. 20, 2021 FORM 4 View Document
4 Dec. 20, 2021 FORM 4 View Document
4 Dec. 13, 2021 FORM 4 SUBMISSION View Document
8-K Dec. 6, 2021 8-K View Document
8-K Nov. 16, 2021 8-K View Document
10-Q Nov. 10, 2021 10-Q View Document
8-K Nov. 9, 2021 8-K View Document
8-K Sept. 8, 2021 8-K View Document
4 Aug. 12, 2021 FORM 4 SUBMISSION View Document
10-Q Aug. 11, 2021 10-Q View Document
3/A Aug. 10, 2021 FORM 3/A SUBMISSION View Document
4 Aug. 10, 2021 FORM 4 SUBMISSION View Document
8-K Aug. 4, 2021 8-K View Document
3 Aug. 2, 2021 FORM 3 SUBMISSION View Document
4 Aug. 2, 2021 FORM 4 SUBMISSION View Document
8-K Aug. 2, 2021 8-K View Document
8-K June 28, 2021 8-K View Document
8-K June 17, 2021 8-K View Document
10-Q May 13, 2021 10-Q View Document
8-K May 12, 2021 8-K View Document
4 May 6, 2021 FORM 4 View Document
4 May 6, 2021 FORM 4 View Document
8-K May 3, 2021 8-K View Document
4 April 21, 2021 FORM 4 View Document
4 April 21, 2021 FORM 4 View Document
4 April 20, 2021 FORM 4 View Document
4 April 20, 2021 FORM 4 View Document
4 April 14, 2021 FORM 4 View Document
4 April 14, 2021 FORM 4 View Document
4 April 8, 2021 FORM 4 View Document
4 April 8, 2021 FORM 4 View Document
8-K April 5, 2021 8-K View Document
4 April 5, 2021 FORM 4 SUBMISSION View Document
3 April 5, 2021 FORM 3 SUBMISSION View Document
4 April 2, 2021 FORM 4 View Document
4 April 2, 2021 FORM 4 View Document
4 March 31, 2021 FORM 4 View Document
4 March 31, 2021 FORM 4 View Document
10-K March 30, 2021 10-K View Document
8-K March 25, 2021 8-K View Document
4 March 25, 2021 FORM 4 View Document
4 March 25, 2021 FORM 4 View Document
4 March 24, 2021 FORM 4 View Document
4 March 24, 2021 FORM 4 View Document
4 March 23, 2021 FORM 4 View Document
4 March 23, 2021 FORM 4 View Document
4 March 19, 2021 FORM 4 View Document
4 March 19, 2021 FORM 4 View Document
4 March 10, 2021 FORM 4 View Document
4 March 10, 2021 FORM 4 View Document
4 March 8, 2021 FORM 4 View Document
4 March 8, 2021 FORM 4 View Document
4 March 5, 2021 FORM 4 View Document
4 March 5, 2021 FORM 4 View Document
4 March 3, 2021 FORM 4 View Document
4 March 3, 2021 FORM 4 View Document
4 March 2, 2021 FORM 4 SUBMISSION View Document
4 March 2, 2021 FORM 4 SUBMISSION View Document
4 Feb. 26, 2021 FORM 4 SUBMISSION View Document
4 Feb. 26, 2021 FORM 4 SUBMISSION View Document
4 Feb. 25, 2021 FORM 4 SUBMISSION View Document
4 Feb. 25, 2021 FORM 4 SUBMISSION View Document
4 Feb. 24, 2021 FORM 4 SUBMISSION View Document
4 Feb. 24, 2021 FORM 4 SUBMISSION View Document
4 Feb. 23, 2021 FORM 4 SUBMISSION View Document
4 Feb. 23, 2021 FORM 4 SUBMISSION View Document
4 Feb. 19, 2021 FORM 4 SUBMISSION View Document
4 Feb. 19, 2021 FORM 4 SUBMISSION View Document
SC 13G Feb. 18, 2021 SC 13G View Document
SC 13G Feb. 16, 2021 - View Document
8-K Feb. 11, 2021 8-K View Document
4 Feb. 10, 2021 FORM 4 SUBMISSION View Document
4 Feb. 10, 2021 FORM 4 SUBMISSION View Document
4 Feb. 10, 2021 FORM 4 SUBMISSION View Document
S-8 Feb. 10, 2021 S-8 View Document
4 Feb. 10, 2021 FORM 4 SUBMISSION View Document
4 Feb. 5, 2021 FORM 4 SUBMISSION View Document
4 Feb. 5, 2021 FORM 4 SUBMISSION View Document
4 Feb. 5, 2021 FORM 4 SUBMISSION View Document
4 Feb. 5, 2021 FORM 4 SUBMISSION View Document
4 Feb. 5, 2021 FORM 4 SUBMISSION View Document
4 Feb. 5, 2021 FORM 4 SUBMISSION View Document
4 Feb. 5, 2021 FORM 4 SUBMISSION View Document
4 Feb. 5, 2021 FORM 4 SUBMISSION View Document
4 Feb. 5, 2021 FORM 4 SUBMISSION View Document
4 Feb. 5, 2021 FORM 4 SUBMISSION View Document
4 Feb. 5, 2021 FORM 4 SUBMISSION View Document
424B4 Feb. 4, 2021 424B4 View Document
3 Feb. 3, 2021 FORM 3 SUBMISSION View Document
3 Feb. 3, 2021 FORM 3 SUBMISSION View Document
3 Feb. 3, 2021 FORM 3 SUBMISSION View Document
3 Feb. 3, 2021 FORM 3 SUBMISSION View Document
EFFECT Feb. 3, 2021 - View Document
3 Feb. 3, 2021 FORM 3 SUBMISSION View Document
3 Feb. 3, 2021 FORM 3 SUBMISSION View Document
3 Feb. 3, 2021 FORM 3 SUBMISSION View Document
3 Feb. 3, 2021 FORM 3 SUBMISSION View Document
S-1MEF Feb. 3, 2021 S-1MEF View Document
CERT Feb. 3, 2021 8A CERT View Document
3 Feb. 3, 2021 FORM 3 SUBMISSION View Document
3 Feb. 3, 2021 FORM 3 SUBMISSION View Document
3 Feb. 3, 2021 FORM 3 SUBMISSION View Document
3 Feb. 3, 2021 FORM 3 SUBMISSION View Document
8-A12B Feb. 2, 2021 8-A12B View Document
CORRESP Feb. 1, 2021 - View Document
S-1/A Feb. 1, 2021 S-1/A View Document
CORRESP Feb. 1, 2021 - View Document
CORRESP Jan. 22, 2021 - View Document
S-1 Jan. 15, 2021 S-1 View Document
CORRESP Jan. 15, 2021 - View Document
SEC STAFF LETTER Dec. 29, 2020 - View Document
UPLOAD Dec. 29, 2020 - View Document
DRS/A Dec. 22, 2020 - View Document
DRSLTR Dec. 22, 2020 - View Document
UPLOAD Dec. 9, 2020 - View Document
DRS Nov. 12, 2020 - View Document