Apexigen, Inc.

Business address
900 Industrial Road, Suite C, San Carlos, CA, 94070
State of incorporation
DE
Fiscal year end
December 31
Former names
Brookline Capital Acquisition Corp. (to 01 Aug 2022)
Get insider transactions for this issuer
Apexigen, Inc. has filed 202 SEC EDGAR filings since 17 Jul 2020

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
15-12G Open Document Open Filing 15-12G 05 Sep 2023 001-39488
4 Open Document Open Filing FORM 4 SUBMISSION 25 Aug 2023 23 Aug 2023
4 Open Document Open Filing FORM 4 SUBMISSION 25 Aug 2023 23 Aug 2023
4 Open Document Open Filing FORM 4 SUBMISSION 25 Aug 2023 23 Aug 2023
4 Open Document Open Filing FORM 4 SUBMISSION 25 Aug 2023 23 Aug 2023
4 Open Document Open Filing FORM 4 SUBMISSION 25 Aug 2023 23 Aug 2023
4 Open Document Open Filing FORM 4 SUBMISSION 25 Aug 2023 23 Aug 2023
4 Open Document Open Filing FORM 4 SUBMISSION 25 Aug 2023 23 Aug 2023
4 Open Document Open Filing FORM 4 SUBMISSION 25 Aug 2023 23 Aug 2023
4 Open Document Open Filing FORM 4 SUBMISSION 25 Aug 2023 23 Aug 2023
4 Open Document Open Filing FORM 4 SUBMISSION 25 Aug 2023 23 Aug 2023
4 Open Document Open Filing FORM 4 SUBMISSION 25 Aug 2023 23 Aug 2023
4 Open Document Open Filing FORM 4 SUBMISSION 25 Aug 2023 23 Aug 2023
3/A Open Document Open Filing FORM 3/A SUBMISSION 24 Aug 2023 29 Jul 2022
S-8 POS Open Document Open Filing S-8 POS 23 Aug 2023 333-267765
8-K Open Document | Data Open Filing 8-K 23 Aug 2023 23 Aug 2023 001-39488
25-NSE Open Document Open Filing 23 Aug 2023 001-39488
8-K Open Document | Data Open Filing 8-K 22 Aug 2023 22 Aug 2023 001-39488
8-K Open Document | Data Open Filing 8-K 18 Aug 2023 15 Aug 2023 001-39488
DEFA14A Open Document Open Filing DEFA14A 16 Aug 2023 001-39488
8-K Open Document | Data Open Filing 8-K 15 Aug 2023 15 Aug 2023 001-39488
425 Open Document Open Filing 425 11 Aug 2023 001-39488
425 Open Document Open Filing 425 11 Aug 2023 001-39488
10-Q Open Document | Data Open Filing 10-Q 10 Aug 2023 30 Jun 2023 001-39488
425 Open Document Open Filing 425 30 Jun 2023 001-39488
DEFM14A Open Document Open Filing FORM DEFM14A 30 Jun 2023 001-39488
4 Open Document Open Filing FORM 4 SUBMISSION 23 Jun 2023 15 Jun 2023
4 Open Document Open Filing FORM 4 SUBMISSION 23 Jun 2023 15 Jun 2023
4 Open Document Open Filing FORM 4 SUBMISSION 23 Jun 2023 15 Jun 2023
4 Open Document Open Filing FORM 4 SUBMISSION 23 Jun 2023 15 Jun 2023
4 Open Document Open Filing FORM 4 SUBMISSION 23 Jun 2023 15 Jun 2023
4 Open Document Open Filing FORM 4 SUBMISSION 25 May 2023 23 May 2023
4 Open Document Open Filing FORM 4 SUBMISSION 25 May 2023 23 May 2023
4 Open Document Open Filing FORM 4 SUBMISSION 25 May 2023 23 May 2023
425 Open Document Open Filing 425 25 May 2023 001-39488
425 Open Document Open Filing 425 24 May 2023 001-39488
425 Open Document Open Filing 425 24 May 2023 001-39488
425 Open Document Open Filing 425 24 May 2023
8-K Open Document | Data Open Filing 8-K 24 May 2023 23 May 2023 001-39488
4 Open Document Open Filing FORM 4 SUBMISSION 23 May 2023 26 Jan 2023
10-Q Open Document | Data Open Filing 10-Q 15 May 2023 31 Mar 2023 001-39488
8-K Open Document | Data Open Filing 8-K 12 Apr 2023 11 Apr 2023 001-39488
424B3 Open Document Open Filing 424B3 10 Apr 2023 333-266847
424B3 Open Document Open Filing 424B3 10 Apr 2023 333-266846
EFFECT Open Document Open Filing 07 Apr 2023 333-266847
EFFECT Open Document Open Filing 07 Apr 2023 333-266846
POS AM Open Document Open Filing POS AM 04 Apr 2023 333-266846
POS AM Open Document Open Filing POS AM 04 Apr 2023 333-266847
EFFECT Open Document Open Filing 21 Mar 2023 333-269912
424B3 Open Document Open Filing 424B3 21 Mar 2023 333-269912
CORRESP Open Document Open Filing 20 Mar 2023
S-1/A Open Document Open Filing S-1/A 17 Mar 2023 333-269912
8-K Open Document | Data Open Filing 8-K 27 Feb 2023 23 Feb 2023 001-39488
S-1 Open Document | Data Open Filing S-1 22 Feb 2023 333-269912
10-K Open Document | Data Open Filing 10-K 22 Feb 2023 31 Dec 2022 001-39488
8-K Open Document | Data Open Filing 8-K 14 Feb 2023 13 Feb 2023 001-39488
D Open Document Open Filing 14 Feb 2023 021-473368
SC 13G/A Open Document Open Filing SC 13G/A 13 Feb 2023 005-92133
SC 13G Open Document Open Filing SC 13G 13 Feb 2023 005-92133
8-K Open Document | Data Open Filing 8-K 01 Feb 2023 31 Jan 2023 001-39488
424B3 Open Document Open Filing 424B3 30 Jan 2023 333-266847
424B3 Open Document Open Filing 424B3 30 Jan 2023 333-266846
SC 13G/A Open Document Open Filing APEXIGEN, INC. 26 Jan 2023 005-92133
8-K Open Document | Data Open Filing 8-K 25 Jan 2023 23 Jan 2023 001-39488
4 Open Document Open Filing FORM 4 SUBMISSION 19 Dec 2022 15 Dec 2022
4 Open Document Open Filing FORM 4 SUBMISSION 19 Dec 2022 15 Dec 2022
4 Open Document Open Filing FORM 4 SUBMISSION 19 Dec 2022 15 Dec 2022
4 Open Document Open Filing FORM 4 SUBMISSION 19 Dec 2022 15 Dec 2022
4 Open Document Open Filing FORM 4 SUBMISSION 19 Dec 2022 15 Dec 2022
10-Q Open Document | Data Open Filing 10-Q 14 Nov 2022 30 Sep 2022 001-39488
8-K Open Document | Data Open Filing 8-K 14 Nov 2022 08 Nov 2022 001-39488
4 Open Document Open Filing FORM 4 SUBMISSION 11 Oct 2022 07 Oct 2022
4 Open Document Open Filing FORM 4 SUBMISSION 11 Oct 2022 07 Oct 2022
4 Open Document Open Filing FORM 4 SUBMISSION 11 Oct 2022 07 Oct 2022
4 Open Document Open Filing FORM 4 SUBMISSION 11 Oct 2022 07 Oct 2022
4 Open Document Open Filing FORM 4 SUBMISSION 11 Oct 2022 07 Oct 2022
S-8 Open Document Open Filing S-8 07 Oct 2022 333-267765
4 Open Document Open Filing FORM 4 SUBMISSION 03 Oct 2022 29 Sep 2022
4 Open Document Open Filing FORM 4 SUBMISSION 03 Oct 2022 29 Sep 2022
4 Open Document Open Filing FORM 4 SUBMISSION 03 Oct 2022 29 Sep 2022
4 Open Document Open Filing FORM 4 SUBMISSION 03 Oct 2022 29 Sep 2022
4 Open Document Open Filing FORM 4 SUBMISSION 03 Oct 2022 29 Sep 2022
4 Open Document Open Filing FORM 4 SUBMISSION 03 Oct 2022 29 Sep 2022
4 Open Document Open Filing FORM 4 SUBMISSION 03 Oct 2022 29 Sep 2022
EFFECT Open Document Open Filing 09 Sep 2022 333-266847
EFFECT Open Document Open Filing 09 Sep 2022 333-266846
424B3 Open Document Open Filing 424B3 09 Sep 2022 333-266847
424B3 Open Document Open Filing 424B3 09 Sep 2022 333-266846
CORRESP Open Document Open Filing 08 Sep 2022
CORRESP Open Document Open Filing 08 Sep 2022
CORRESP Open Document Open Filing 01 Sep 2022
CORRESP Open Document Open Filing 01 Sep 2022
S-1/A Open Document | Data Open Filing S-1/A 01 Sep 2022 333-266846
S-1/A Open Document | Data Open Filing S-1/A 01 Sep 2022 333-266847
UPLOAD Open Document Open Filing 29 Aug 2022
UPLOAD Open Document Open Filing 29 Aug 2022
8-K/A Open Document | Data Open Filing 8-K/A 18 Aug 2022 29 Jul 2022 001-39488
10-Q Open Document | Data Open Filing 10-Q 18 Aug 2022 30 Jun 2022 001-39488
NT 10-Q Open Document Open Filing NT 10-Q 15 Aug 2022 30 Jun 2022 001-39488
S-1 Open Document Open Filing S-1 12 Aug 2022 333-266847
S-1 Open Document Open Filing S-1 12 Aug 2022 333-266846
SC 13G Open Document Open Filing 11 Aug 2022 005-92133
3 Open Document Open Filing FORM 3 SUBMISSION 08 Aug 2022 29 Jul 2022
3 Open Document Open Filing FORM 3 SUBMISSION 08 Aug 2022 29 Jul 2022
3 Open Document Open Filing FORM 3 SUBMISSION 08 Aug 2022 29 Jul 2022
3 Open Document Open Filing FORM 3 SUBMISSION 08 Aug 2022 29 Jul 2022
3 Open Document Open Filing FORM 3 SUBMISSION 08 Aug 2022 29 Jul 2022
3 Open Document Open Filing FORM 3 SUBMISSION 08 Aug 2022 29 Jul 2022
3 Open Document Open Filing FORM 3 SUBMISSION 08 Aug 2022 29 Jul 2022
3 Open Document Open Filing FORM 3 SUBMISSION 08 Aug 2022 29 Jul 2022
3 Open Document Open Filing FORM 3 SUBMISSION 08 Aug 2022 29 Jul 2022
3 Open Document Open Filing FORM 3 SUBMISSION 08 Aug 2022 29 Jul 2022
3 Open Document Open Filing FORM 3 SUBMISSION 08 Aug 2022 29 Jul 2022
3 Open Document Open Filing FORM 3 SUBMISSION 08 Aug 2022 29 Jul 2022
SC 13G Open Document Open Filing SCHEDULE 13G 08 Aug 2022 005-92133
8-K Open Document | Data Open Filing 8-K 04 Aug 2022 29 Jul 2022 001-39488
SC 13G/A Open Document Open Filing SCHEDULE 13G 01 Aug 2022 005-92133
8-K Open Document | Data Open Filing 8-K 01 Aug 2022 29 Jul 2022 001-39488
25-NSE Open Document Open Filing 01 Aug 2022 333-246287
8-K Open Document | Data Open Filing 8-K 28 Jul 2022 27 Jul 2022 001-39488
425 Open Document Open Filing 425 18 Jul 2022 001-39488
8-K Open Document | Data Open Filing 8-K 18 Jul 2022 18 Jul 2022 001-39488
425 Open Document Open Filing 425 11 Jul 2022 001-39488
424B3 Open Document Open Filing 424B3 06 Jul 2022 333-264222
EFFECT Open Document Open Filing 05 Jul 2022 333-264222
CORRESP Open Document Open Filing 01 Jul 2022
CORRESP Open Document Open Filing 30 Jun 2022
S-4/A Open Document Open Filing S-4/A 30 Jun 2022 333-264222
425 Open Document Open Filing 425 30 Jun 2022 001-39488
8-K Open Document | Data Open Filing 8-K 30 Jun 2022 29 Jun 2022 001-39488
425 Open Document Open Filing 425 29 Jun 2022 001-39488
UPLOAD Open Document Open Filing 29 Jun 2022
CORRESP Open Document Open Filing 27 Jun 2022
S-4/A Open Document Open Filing S-4/A 27 Jun 2022 333-264222
8-K Open Document | Data Open Filing 8-K 27 Jun 2022 26 Jun 2022 001-39488
UPLOAD Open Document Open Filing 22 Jun 2022
425 Open Document Open Filing 425 15 Jun 2022 001-39488
CORRESP Open Document Open Filing 14 Jun 2022
S-4/A Open Document Open Filing S-4/A 14 Jun 2022 333-264222
425 Open Document Open Filing 425 08 Jun 2022 001-39488
UPLOAD Open Document Open Filing 08 Jun 2022
425 Open Document Open Filing 425 03 Jun 2022 001-39488
425 Open Document Open Filing 425 02 Jun 2022 001-39488
8-K Open Document | Data Open Filing 8-K 02 Jun 2022 02 Jun 2022 001-39488
S-4/A Open Document | Data Open Filing S-4/A 24 May 2022 333-264222
CORRESP Open Document Open Filing 23 May 2022
10-Q Open Document | Data Open Filing FORM 10-Q 23 May 2022 31 Mar 2022 001-39488
425 Open Document Open Filing 425 19 May 2022 001-39488
NT 10-Q Open Document Open Filing NT 10-Q 16 May 2022 31 Mar 2022 001-39488
425 Open Document Open Filing 425 16 May 2022 001-39488
UPLOAD Open Document Open Filing 10 May 2022
425 Open Document Open Filing 425 09 May 2022 001-39488
8-K Open Document | Data Open Filing 8-K 03 May 2022 02 May 2022 001-39488
8-K Open Document | Data Open Filing 8-K 26 Apr 2022 26 Apr 2022 001-39488
425 Open Document Open Filing 425 22 Apr 2022 001-39488
SC 13G Open Document Open Filing SCHEDULE 13G 13 Apr 2022 005-92133
S-4 Open Document Open Filing FORM S-4 11 Apr 2022 333-264222
10-K Open Document | Data Open Filing FORM 10-K 07 Apr 2022 31 Dec 2021 001-39488
NT 10-K Open Document Open Filing NT 10-K 31 Mar 2022 31 Mar 2022 001-39488
DEF 14A Open Document Open Filing DEF 14A 28 Mar 2022 26 Apr 2022 001-39488
PRE 14A Open Document Open Filing PRE 14A 18 Mar 2022 26 Apr 2022 001-39488
425 Open Document Open Filing 425 18 Mar 2022 001-39488
8-K Open Document | Data Open Filing 8-K 18 Mar 2022 18 Mar 2022 001-39488
425 Open Document Open Filing 425 18 Mar 2022 001-39488
8-K Open Document | Data Open Filing 8-K 18 Mar 2022 18 Mar 2022 001-39488
SC 13G Open Document Open Filing SCHEDULE 13G 14 Feb 2022 005-92133
SC 13G Open Document Open Filing BROOKLINE CAPITAL ACQUISITION CORP. 04 Feb 2022 005-92133
8-K Open Document | Data Open Filing 8-K 15 Dec 2021 30 Nov 2021 001-39488
10-Q Open Document | Data Open Filing 10-Q 09 Dec 2021 30 Sep 2021 001-39488
8-K/A Open Document | Data Open Filing 8-K/A 24 Nov 2021 23 Nov 2021 001-39488
8-K Open Document | Data Open Filing 8-K 24 Nov 2021 22 Nov 2021 001-39488
NT 10-Q Open Document Open Filing NT 10-Q 15 Nov 2021 30 Sep 2021 001-39488
10-Q Open Document | Data Open Filing 10-Q 16 Aug 2021 30 Jun 2021 001-39488
10-Q Open Document | Data Open Filing 10-Q 07 Jun 2021 31 Mar 2021 001-39488
8-K Open Document Open Filing 8-K 04 Jun 2021 28 May 2021 001-39488
NT 10-Q Open Document Open Filing NT 10-Q 17 May 2021 31 Mar 2021 001-39488
SC 13G/A Open Document Open Filing 10 Mar 2021 005-92133
8-K Open Document Open Filing CURRENT REPORT 18 Feb 2021 18 Feb 2021 001-39488
4 Open Document Open Filing OWNERSHIP DOCUMENT 16 Feb 2021 11 Feb 2021
SC 13D Open Document Open Filing SCHEDULE 13D 12 Feb 2021 005-92133
SC 13G Open Document Open Filing 10 Feb 2021 005-92133
3 Open Document Open Filing PRIMARY DOCUMENT 09 Feb 2021 29 Jan 2021
8-K Open Document Open Filing CURRENT REPORT 08 Feb 2021 02 Feb 2021 001-39488
4 Open Document Open Filing 04 Feb 2021 02 Feb 2021
8-K Open Document Open Filing CURRENT REPORT 02 Feb 2021 28 Jan 2021 001-39488
424B4 Open Document Open Filing 29 Jan 2021 333-246287
EFFECT Open Document Open Filing 28 Jan 2021 333-246287
3 Open Document Open Filing OWNERSHIP DOCUMENT 28 Jan 2021 28 Jan 2021
3 Open Document Open Filing OWNERSHIP DOCUMENT 28 Jan 2021 28 Jan 2021
3 Open Document Open Filing 28 Jan 2021 28 Jan 2021
3 Open Document Open Filing OWNERSHIP DOCUMENT 28 Jan 2021 28 Jan 2021
3 Open Document Open Filing 28 Jan 2021 28 Jan 2021
3 Open Document Open Filing 28 Jan 2021 28 Jan 2021
3 Open Document Open Filing OWNERSHIP DOCUMENT 28 Jan 2021 28 Jan 2021
8-A12B/A Open Document Open Filing AMENDMENT NO. 1 TO FORM 8-A12B 27 Jan 2021 001-39488
CERT Open Document Open Filing 25 Jan 2021 001-39488
S-1/A Open Document Open Filing AMENDMENT NO. 3 TO FORM S-1 07 Jan 2021 333-246287
8-A12B Open Document Open Filing REGISTRATION OF CERTAIN CLASSES OF SECURITIES 03 Sep 2020 001-39488
S-1/A Open Document Open Filing REGISTRATION STATEMENT 26 Aug 2020 333-246287
S-1/A Open Document Open Filing AMENDMENT NO. 1 TO FORM S-1 24 Aug 2020 333-246287
S-1 Open Document Open Filing REGISTRATION STATEMENT 14 Aug 2020 333-246287
DRS Open Document Open Filing 17 Jul 2020 377-03301