SEC Filings for Arcellx, Inc. (ACLX)

Last updated: 2026-03-26 21:10 UTC | Total filings: 423

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

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Form Filing Date Description Link
SCHEDULE 13G/A March 26, 2026 - View Document
4 March 19, 2026 4 View Document
SCHEDULE 13G/A March 6, 2026 - View Document
SCHEDULE 13G/A March 6, 2026 - View Document
SC TO-T March 6, 2026 SC TO-T View Document
SC 14D9 March 6, 2026 SC 14D9 View Document
4 March 4, 2026 4 View Document
4 Feb. 27, 2026 4 View Document
144 Feb. 27, 2026 - View Document
10-K Feb. 26, 2026 10-K View Document
144 Feb. 25, 2026 - View Document
4 Feb. 25, 2026 4 View Document
SCHEDULE 13D/A Feb. 24, 2026 - View Document
SCHEDULE 13D/A Feb. 24, 2026 - View Document
SC TO-C Feb. 23, 2026 SC TO-C View Document
SC TO-C Feb. 23, 2026 SC TO-C View Document
SC14D9C Feb. 23, 2026 SC14D9C View Document
SC14D9C Feb. 23, 2026 SC14D9C View Document
8-K Feb. 23, 2026 8-K View Document
SCHEDULE 13D Feb. 23, 2026 - View Document
144 Feb. 19, 2026 - View Document
4 Feb. 19, 2026 4 View Document
4 Feb. 18, 2026 4 View Document
SCHEDULE 13G Feb. 17, 2026 - View Document
SCHEDULE 13G/A Feb. 17, 2026 - View Document
SCHEDULE 13G/A Feb. 17, 2026 - View Document
SCHEDULE 13G/A Feb. 17, 2026 - View Document
144 Feb. 17, 2026 - View Document
4 Feb. 13, 2026 - View Document
4 Feb. 13, 2026 - View Document
SCHEDULE 13G/A Feb. 5, 2026 - View Document
144 Jan. 20, 2026 - View Document
4 Jan. 20, 2026 4 View Document
4 Jan. 14, 2026 4 View Document
144 Jan. 14, 2026 - View Document
4 Jan. 13, 2026 4 View Document
144 Jan. 13, 2026 - View Document
4 Jan. 12, 2026 4 View Document
144 Jan. 12, 2026 - View Document
4 Jan. 6, 2026 4 View Document
4 Jan. 6, 2026 4 View Document
4 Jan. 6, 2026 4 View Document
S-8 Jan. 2, 2026 S-8 View Document
8-K Dec. 8, 2025 8-K View Document
SCHEDULE 13G/A Dec. 5, 2025 - View Document
4 Nov. 17, 2025 4 View Document
SCHEDULE 13G/A Nov. 5, 2025 - View Document
10-Q Nov. 5, 2025 10-Q View Document
8-K Nov. 5, 2025 8-K View Document
144 Oct. 15, 2025 - View Document
4 Oct. 15, 2025 4 View Document
4 Oct. 6, 2025 4 View Document
144 Oct. 3, 2025 - View Document
4 Sept. 30, 2025 4 View Document
4 Sept. 29, 2025 4 View Document
4 Sept. 26, 2025 4 View Document
4 Sept. 19, 2025 - View Document
144 Sept. 18, 2025 - View Document
SCHEDULE 13G Sept. 8, 2025 - View Document
4 Aug. 29, 2025 - View Document
SCHEDULE 13G/A Aug. 14, 2025 - View Document
SCHEDULE 13D/A Aug. 14, 2025 - View Document
4 Aug. 14, 2025 4 View Document
8-K Aug. 7, 2025 8-K View Document
10-Q Aug. 7, 2025 10-Q View Document
4 June 11, 2025 4 View Document
144 June 10, 2025 - View Document
4 May 30, 2025 - View Document
4 May 30, 2025 4 View Document
4 May 30, 2025 - View Document
4 May 30, 2025 - View Document
4 May 30, 2025 - View Document
4 May 30, 2025 - View Document
4 May 30, 2025 4 View Document
4 May 28, 2025 4 View Document
8-K May 28, 2025 8-K View Document
144 May 27, 2025 - View Document
4 May 20, 2025 4 View Document
SCHEDULE 13G/A May 15, 2025 - View Document
8-K May 14, 2025 8-K View Document
SCHEDULE 13G/A May 12, 2025 - View Document
SCHEDULE 13D/A May 12, 2025 - View Document
8-K May 8, 2025 8-K View Document
10-Q May 8, 2025 10-Q View Document
SCHEDULE 13G/A April 30, 2025 - View Document
4 April 29, 2025 - View Document
144 April 29, 2025 - View Document
DEF 14A April 17, 2025 DEF 14A View Document
DEFA14A April 17, 2025 DEFA14A View Document
ARS April 17, 2025 ARS View Document
4 April 8, 2025 - View Document
4 March 20, 2025 - View Document
4 March 20, 2025 - View Document
3 March 20, 2025 - View Document
3 March 20, 2025 - View Document
8-K March 20, 2025 8-K View Document
4 March 18, 2025 - View Document
8-K Feb. 27, 2025 8-K View Document
10-K Feb. 27, 2025 10-K View Document
SCHEDULE 13D/A Feb. 27, 2025 - View Document
4 Feb. 27, 2025 - View Document
144 Feb. 26, 2025 - View Document
4 Feb. 26, 2025 - View Document
4 Feb. 25, 2025 - View Document
144 Feb. 25, 2025 - View Document
144 Feb. 24, 2025 - View Document
4 Feb. 24, 2025 - View Document
SCHEDULE 13G/A Feb. 12, 2025 - View Document
4 Feb. 11, 2025 - View Document
4 Feb. 11, 2025 - View Document
4 Feb. 4, 2025 - View Document
SCHEDULE 13G Jan. 30, 2025 - View Document
4 Jan. 14, 2025 - View Document
4/A Jan. 10, 2025 - View Document
4 Jan. 10, 2025 - View Document
4 Jan. 10, 2025 - View Document
4 Jan. 10, 2025 - View Document
4/A Jan. 10, 2025 - View Document
4/A Jan. 10, 2025 - View Document
144 Jan. 7, 2025 - View Document
144 Jan. 7, 2025 - View Document
144 Jan. 7, 2025 - View Document
144 Jan. 7, 2025 - View Document
4 Jan. 6, 2025 - View Document
S-8 Jan. 6, 2025 S-8 View Document
4 Jan. 6, 2025 - View Document
4 Jan. 6, 2025 - View Document
4 Jan. 6, 2025 - View Document
144 Jan. 3, 2025 - View Document
144 Jan. 3, 2025 - View Document
144 Jan. 3, 2025 - View Document
4 Dec. 26, 2024 - View Document
8-K Dec. 12, 2024 8-K View Document
8-K Dec. 9, 2024 8-K View Document
4 Dec. 5, 2024 - View Document
SC 13G Nov. 22, 2024 SC 13G View Document
4 Nov. 19, 2024 - View Document
SC 13G/A Nov. 14, 2024 SC 13G/A View Document
SC 13G/A Nov. 14, 2024 SC 13G/A View Document
4 Nov. 14, 2024 - View Document
SC 13G/A Nov. 12, 2024 - View Document
4 Nov. 12, 2024 - View Document
4 Nov. 12, 2024 - View Document
SC 13G/A Nov. 8, 2024 - View Document
SC 13D Nov. 8, 2024 SC 13D View Document
144 Nov. 8, 2024 - View Document
144 Nov. 8, 2024 - View Document
8-K Nov. 7, 2024 8-K View Document
10-Q Nov. 7, 2024 10-Q View Document
144 Nov. 7, 2024 - View Document
8-K Nov. 5, 2024 8-K View Document
4 Oct. 22, 2024 - View Document
SC 13G/A Oct. 22, 2024 - View Document
144 Oct. 22, 2024 - View Document
4 Oct. 3, 2024 - View Document
144 Sept. 17, 2024 - View Document
4 Sept. 17, 2024 - View Document
4 Sept. 12, 2024 - View Document
4 Sept. 6, 2024 - View Document
4 Sept. 3, 2024 - View Document
4 Aug. 28, 2024 - View Document
144 Aug. 26, 2024 - View Document
4 Aug. 22, 2024 - View Document
4 Aug. 19, 2024 - View Document
10-Q Aug. 8, 2024 10-Q View Document
8-K Aug. 8, 2024 8-K View Document
4 Aug. 2, 2024 - View Document
4 Aug. 1, 2024 - View Document
4 July 18, 2024 - View Document
4 July 12, 2024 - View Document
144 July 11, 2024 - View Document
4 July 11, 2024 - View Document
144 July 9, 2024 - View Document
4 July 3, 2024 4 View Document
4 June 28, 2024 - View Document
4 June 28, 2024 - View Document
144 June 27, 2024 - View Document
144 June 26, 2024 - View Document
4 June 14, 2024 - View Document
144 June 12, 2024 - View Document
4 June 6, 2024 4 View Document
4 June 6, 2024 - View Document
4 June 6, 2024 - View Document
4 June 6, 2024 - View Document
4 June 6, 2024 - View Document
4 June 6, 2024 4 View Document
8-K May 29, 2024 8-K View Document
4 May 24, 2024 - View Document
144 May 24, 2024 - View Document
10-Q May 9, 2024 10-Q View Document
8-K May 9, 2024 8-K View Document
4 May 3, 2024 - View Document
4 April 18, 2024 - View Document
DEF 14A April 11, 2024 DEF 14A View Document
ARS April 11, 2024 ARS View Document
DEFA14A April 11, 2024 DEFA14A View Document
SC 13G/A April 10, 2024 - View Document
4 April 3, 2024 - View Document
144 April 1, 2024 - View Document
4 March 26, 2024 - View Document
4 March 25, 2024 4 View Document
SC 13D/A March 25, 2024 SC 13D/A View Document
144 March 22, 2024 - View Document
144 March 21, 2024 - View Document
144 March 21, 2024 - View Document
4 March 18, 2024 - View Document
4 March 18, 2024 - View Document
144 March 18, 2024 - View Document
144 March 15, 2024 - View Document
8-K March 14, 2024 8-K View Document
144 March 7, 2024 - View Document
10-K Feb. 28, 2024 10-K View Document
8-K Feb. 28, 2024 8-K View Document
SC 13G/A Feb. 14, 2024 SC 13G/A View Document
SC 13G/A Feb. 14, 2024 SCHEDULE 13G/A View Document
SC 13G/A Feb. 13, 2024 - View Document
4 Feb. 12, 2024 - View Document
4 Feb. 12, 2024 - View Document
4 Feb. 9, 2024 - View Document
4 Feb. 9, 2024 - View Document
SC 13G Feb. 9, 2024 - View Document
144 Feb. 8, 2024 - View Document
144 Feb. 8, 2024 - View Document
8-K Jan. 31, 2024 8-K View Document
SC 13G Jan. 29, 2024 - View Document
4 Jan. 8, 2024 FORM 4 SUBMISSION View Document
4 Jan. 8, 2024 FORM 4 SUBMISSION View Document
4 Jan. 8, 2024 FORM 4 SUBMISSION View Document
4 Jan. 4, 2024 FORM 4 SUBMISSION View Document
144 Jan. 4, 2024 - View Document
144 Jan. 4, 2024 - View Document
144 Jan. 4, 2024 - View Document
4 Jan. 4, 2024 FORM 4 SUBMISSION View Document
4 Jan. 4, 2024 FORM 4 SUBMISSION View Document
S-8 Jan. 2, 2024 S-8 View Document
8-K Dec. 28, 2023 8-K View Document
144 Dec. 28, 2023 - View Document
4 Dec. 19, 2023 FORM 4 SUBMISSION View Document
SC 13D/A Dec. 18, 2023 SC 13D/A View Document
4 Dec. 18, 2023 FORM 4 SUBMISSION View Document
144 Dec. 18, 2023 - View Document
144 Dec. 14, 2023 - View Document
144 Dec. 14, 2023 - View Document
8-K Dec. 12, 2023 8-K View Document
8-K Dec. 8, 2023 8-K View Document
8-K Nov. 15, 2023 8-K View Document
8-K Nov. 13, 2023 8-K View Document
10-Q Nov. 13, 2023 10-Q View Document
8-K Nov. 2, 2023 8-K View Document
8-K Aug. 14, 2023 8-K View Document
10-Q Aug. 14, 2023 10-Q View Document
4 Aug. 7, 2023 FORM 4 SUBMISSION View Document
144 Aug. 4, 2023 - View Document
SC 13G July 21, 2023 SC 13G View Document
4 July 5, 2023 FORM 4 SUBMISSION View Document
144 July 3, 2023 - View Document
SC 13D/A June 23, 2023 NEW ENTERPRISE ASSOCIATES 15, L.P. / ARCELLX, INC. -- SCHEDULE 13D/A(#2) View Document
8-K June 20, 2023 8-K View Document
4 June 16, 2023 FORM 4 SUBMISSION View Document
4 June 16, 2023 FORM 4 SUBMISSION View Document
4 June 16, 2023 FORM 4 SUBMISSION View Document
4 June 16, 2023 FORM 4 SUBMISSION View Document
4 June 16, 2023 FORM 4 SUBMISSION View Document
4 June 16, 2023 FORM 4 SUBMISSION View Document
8-K June 14, 2023 8-K View Document
4 June 5, 2023 FORM 4 SUBMISSION View Document
UPLOAD June 2, 2023 - View Document
SC 13D/A June 2, 2023 SC 13D/A View Document
4 June 2, 2023 FORM 4 SUBMISSION View Document
4 June 2, 2023 FORM 4 SUBMISSION View Document
144 May 31, 2023 - View Document
4 May 25, 2023 FORM 4 SUBMISSION View Document
144 May 25, 2023 - View Document
CORRESP May 23, 2023 - View Document
SC 13D/A May 19, 2023 SC 13D/A View Document
UPLOAD May 16, 2023 - View Document
4 May 15, 2023 FORM 4 SUBMISSION View Document
4 May 15, 2023 FORM 4 SUBMISSION View Document
144 May 11, 2023 - View Document
144 May 11, 2023 - View Document
4 May 11, 2023 FORM 4 SUBMISSION View Document
10-Q/A May 9, 2023 10-Q/A View Document
8-K May 8, 2023 8-K View Document
S-3ASR May 8, 2023 S-3ASR View Document
8-K May 8, 2023 8-K View Document
4 May 8, 2023 FORM 4 SUBMISSION View Document
10-Q May 8, 2023 10-Q View Document
4 May 5, 2023 FORM 4 SUBMISSION View Document
144 May 3, 2023 - View Document
ARS April 28, 2023 ARS View Document
DEFA14A April 28, 2023 DEFA14A View Document
DEF 14A April 28, 2023 DEF 14A View Document
4 April 26, 2023 FORM 4 SUBMISSION View Document
144 April 24, 2023 - View Document
4 April 20, 2023 FORM 4 SUBMISSION View Document
144 April 19, 2023 - View Document
PRE 14A April 14, 2023 PRE 14A View Document
4 April 4, 2023 FORM 4 SUBMISSION View Document
8-K March 29, 2023 8-K View Document
10-K March 29, 2023 10-K View Document
SC 13G/A Feb. 14, 2023 - View Document
SC 13G Feb. 14, 2023 SC 13G View Document
SC 13G/A Feb. 13, 2023 - View Document
4 Feb. 9, 2023 FORM 4 SUBMISSION View Document
SC 13G/A Feb. 9, 2023 - View Document
4 Feb. 9, 2023 FORM 4 SUBMISSION View Document
SC 13G Feb. 8, 2023 - View Document
4 Feb. 7, 2023 FORM 4 SUBMISSION View Document
D Feb. 6, 2023 - View Document
8-K Jan. 30, 2023 8-K View Document
SC 13D/A Jan. 24, 2023 NEW ENTERPRISE ASSOCIATES 15, L.P. / ARCELLX, INC. -- SCHEDULE 13D/A(#1) View Document
4 Jan. 5, 2023 FORM 4 SUBMISSION View Document
4 Jan. 5, 2023 FORM 4 SUBMISSION View Document
4 Jan. 5, 2023 FORM 4 SUBMISSION View Document
S-8 Jan. 3, 2023 S-8 View Document
4 Dec. 27, 2022 FORM 4 SUBMISSION View Document
4 Dec. 22, 2022 FORM 4 SUBMISSION View Document
4 Dec. 22, 2022 FORM 4 SUBMISSION View Document
4 Dec. 22, 2022 FORM 4 SUBMISSION View Document
4 Dec. 22, 2022 FORM 4 SUBMISSION View Document
4 Dec. 22, 2022 FORM 4 SUBMISSION View Document
4 Dec. 22, 2022 FORM 4 SUBMISSION View Document
4 Dec. 22, 2022 FORM 4 SUBMISSION View Document
4 Dec. 22, 2022 FORM 4 SUBMISSION View Document
8-K Dec. 16, 2022 8-K View Document
4 Dec. 14, 2022 FORM 4 SUBMISSION View Document
SC 13G/A Dec. 12, 2022 SC 13G/A View Document
8-K Dec. 12, 2022 8-K View Document
8-K Dec. 9, 2022 8-K View Document
SC 13G/A Nov. 28, 2022 SC 13G/A View Document
8-K Nov. 14, 2022 8-K View Document
10-Q Nov. 14, 2022 10-Q View Document
10-Q/A Nov. 14, 2022 10-Q/A View Document
10-Q/A Nov. 14, 2022 10-Q/A View Document
8-K Nov. 9, 2022 8-K View Document
4 Sept. 30, 2022 FORM 4 SUBMISSION View Document
4 Sept. 30, 2022 FORM 4 SUBMISSION View Document
4 Sept. 30, 2022 FORM 4 SUBMISSION View Document
SC 13G Aug. 29, 2022 - View Document
NT 10-Q Aug. 16, 2022 NT 10-Q View Document
8-K Aug. 15, 2022 8-K View Document
10-Q Aug. 15, 2022 10-Q View Document
SC 13G June 27, 2022 - View Document
SC 13D/A June 27, 2022 SC 13D/A View Document
4 June 23, 2022 FORM 4 SUBMISSION View Document
8-K June 21, 2022 8-K View Document
424B4 June 16, 2022 424B4 View Document
S-1MEF June 15, 2022 S-1MEF View Document
EFFECT June 15, 2022 - View Document
S-1/A June 15, 2022 S-1/A View Document
CORRESP June 14, 2022 - View Document
S-1 June 14, 2022 S-1 View Document
CORRESP June 14, 2022 - View Document
CORRESP June 14, 2022 - View Document
S-1/A June 14, 2022 S-1/A View Document
CORRESP June 14, 2022 - View Document
UPLOAD June 13, 2022 - View Document
DRS June 13, 2022 - View Document
4 May 24, 2022 FORM 4 SUBMISSION View Document
3 May 24, 2022 FORM 3 SUBMISSION View Document
8-K May 23, 2022 8-K View Document
4 May 17, 2022 FORM 4 SUBMISSION View Document
3 May 17, 2022 FORM 3 SUBMISSION View Document
8-K May 16, 2022 8-K View Document
8-K May 12, 2022 8-K View Document
10-Q May 12, 2022 10-Q View Document
8-K March 24, 2022 8-K View Document
10-K March 24, 2022 10-K View Document
D March 10, 2022 - View Document
SC 13D Feb. 17, 2022 NEW ENTERPRISE ASSOCIATES 15, L.P. / ARCELLX, INC. -- SCHEDULE 13D View Document
SC 13D Feb. 17, 2022 SC 13D View Document
8-K Feb. 17, 2022 8-K View Document
4 Feb. 10, 2022 FORM 4 SUBMISSION View Document
4 Feb. 9, 2022 FORM 4 SUBMISSION View Document
4 Feb. 9, 2022 FORM 4 SUBMISSION View Document
4 Feb. 9, 2022 FORM 4 SUBMISSION View Document
4 Feb. 9, 2022 FORM 4 SUBMISSION View Document
8-K Feb. 9, 2022 8-K View Document
SC 13G Feb. 9, 2022 SC 13G View Document
4 Feb. 9, 2022 FORM 4 SUBMISSION View Document
4 Feb. 7, 2022 FORM 4 SUBMISSION View Document
4 Feb. 7, 2022 FORM 4 SUBMISSION View Document
4 Feb. 7, 2022 FORM 4 SUBMISSION View Document
4 Feb. 7, 2022 FORM 4 SUBMISSION View Document
S-8 Feb. 7, 2022 S-8 View Document
424B4 Feb. 7, 2022 424B4 View Document
EFFECT Feb. 3, 2022 - View Document
3 Feb. 3, 2022 FORM 3 SUBMISSION View Document
SEC STAFF LETTER Feb. 3, 2022 - View Document
CERT Feb. 3, 2022 - View Document
3 Feb. 3, 2022 FORM 3 SUBMISSION View Document
3 Feb. 3, 2022 FORM 3 SUBMISSION View Document
3 Feb. 3, 2022 FORM 3 SUBMISSION View Document
3 Feb. 3, 2022 FORM 3 SUBMISSION View Document
3 Feb. 3, 2022 FORM 3 SUBMISSION View Document
3 Feb. 3, 2022 FORM 3 SUBMISSION View Document
3 Feb. 3, 2022 FORM 3 SUBMISSION View Document
3 Feb. 3, 2022 FORM 3 SUBMISSION View Document
3 Feb. 3, 2022 FORM 3 SUBMISSION View Document
3 Feb. 3, 2022 FORM 3 SUBMISSION View Document
3 Feb. 3, 2022 FORM 3 SUBMISSION View Document
8-A12B Feb. 1, 2022 8-A12B View Document
CORRESP Feb. 1, 2022 - View Document
CORRESP Feb. 1, 2022 - View Document
CORRESP Jan. 31, 2022 - View Document
S-1/A Jan. 31, 2022 S-1/A View Document
SEC STAFF LETTER Jan. 26, 2022 - View Document
CORRESP Jan. 25, 2022 - View Document
UPLOAD Jan. 25, 2022 - View Document
S-1 Jan. 14, 2022 S-1 View Document
DRS/A Dec. 28, 2021 - View Document
DRSLTR Dec. 28, 2021 - View Document
UPLOAD Dec. 22, 2021 - View Document
DRS/A Nov. 19, 2021 - View Document
D/A July 1, 2021 - View Document
D April 9, 2021 - View Document
UPLOAD June 25, 2020 - View Document
DRS/A June 9, 2020 - View Document
DRSLTR June 9, 2020 - View Document
UPLOAD June 1, 2020 - View Document
DRS May 1, 2020 - View Document
D/A Oct. 15, 2019 - View Document
D Aug. 22, 2019 - View Document