Estrella Immunopharma, Inc.

Symbol
ESLA, ESLAW on Nasdaq
Business address
5858 Horton Street, Suite 370, Emeryville, CA, 94608
Fiscal year end
31 December
Former names
TradeUP Acquisition Corp. (to 20 Sep 2023)
Get insider transactions for this issuer
Estrella Immunopharma, Inc. has filed 232 SEC EDGAR filings since 19 Feb 2021

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
S-1 Open Document | Data Open Filing REGISTRATION STATEMENT 22 Dec 2025 333-292331
8-K Open Document | Data Open Filing CURRENT REPORT 04 Dec 2025 04 Dec 2025 001-40608
10-Q Open Document | Data Open Filing QUARTERLY REPORT 12 Nov 2025 30 Sep 2025 001-40608
8-K Open Document | Data Open Filing CURRENT REPORT 06 Nov 2025 03 Nov 2025 001-40608
3 Open Document Open Filing 01 Oct 2025 22 Sep 2025
8-K Open Document | Data Open Filing CURRENT REPORT 29 Sep 2025 23 Sep 2025 001-40608
8-K Open Document | Data Open Filing CURRENT REPORT 26 Sep 2025 22 Sep 2025 001-40608
10-Q Open Document | Data Open Filing QUARTERLY REPORT 12 Aug 2025 30 Jun 2025 001-40608
8-K Open Document | Data Open Filing CURRENT REPORT 07 Aug 2025 01 Aug 2025 001-40608
8-K Open Document | Data Open Filing CURRENT REPORT 05 Jun 2025 05 Jun 2025 001-40608
8-K Open Document | Data Open Filing CURRENT REPORT 03 Jun 2025 30 May 2025 001-40608
8-K Open Document | Data Open Filing CURRENT REPORT 29 May 2025 29 May 2025 001-40608
10-Q Open Document | Data Open Filing QUARTERLY REPORT 14 May 2025 31 Mar 2025 001-40608
8-K Open Document | Data Open Filing FORM 8-K 02 May 2025 30 Apr 2025 001-40608
10-KT Open Document | Data Open Filing TRANSITION REPORT 25 Mar 2025 31 Dec 2024 001-40608
8-K Open Document | Data Open Filing CURRRENT REPORT 21 Feb 2025 21 Feb 2025 001-40608
8-K Open Document | Data Open Filing FORM 8-K 20 Feb 2025 19 Feb 2025 001-40608
4 Open Document Open Filing 14 Feb 2025 30 Oct 2024
4 Open Document Open Filing 14 Feb 2025 30 Oct 2024
S-8 Open Document Open Filing REGISTRATION STATEMENT 23 Dec 2024 333-284012
EFFECT Open Document Open Filing 19 Dec 2024 333-283770
CORRESP Open Document Open Filing 17 Dec 2024
424B3 Open Document Open Filing 424B3 17 Dec 2024 333-274931
UPLOAD Open Document Open Filing 17 Dec 2024 333-283770
8-K Open Document | Data Open Filing CURRENT REPORT 16 Dec 2024 16 Dec 2024 001-40608
S-3 Open Document Open Filing REGISTRATION STATEMENT 12 Dec 2024 333-283770
424B3 Open Document Open Filing PROSPECTUS SUPPLEMENT 09 Dec 2024 333-274931
8-K Open Document | Data Open Filing CURRENT REPORT 06 Dec 2024 04 Dec 2024 001-40608
424B3 Open Document Open Filing PROSPECTUS SUPPLEMENT 27 Nov 2024 333-274931
8-K Open Document | Data Open Filing CURRENT REPORT 26 Nov 2024 25 Nov 2024 001-40608
8-K Open Document | Data Open Filing CURRENT REPORT 25 Nov 2024 25 Nov 2024 001-40608
424B3 Open Document Open Filing PROSPECTUS SUPPLEMENT 18 Nov 2024 333-274931
10-Q Open Document | Data Open Filing QUARTERLY REPORT 14 Nov 2024 30 Sep 2024 001-40608
8-K/A Open Document | Data Open Filing AMENDMENT TO FORM 8-K 07 Nov 2024 14 Aug 2024 001-40608
8-K Open Document | Data Open Filing CURRENT REPORT 07 Nov 2024 01 Nov 2024 001-40608
10-K/A Open Document | Data Open Filing AMENDMENT NO. 1 TO FORM 10-K 28 Oct 2024 30 Jun 2024 001-40608
424B3 Open Document Open Filing PROSPECTUS SUPPLEMENT 02 Oct 2024 333-274931
10-K Open Document | Data Open Filing ANNUAL REPORT 27 Sep 2024 30 Jun 2024 001-40608
3 Open Document Open Filing 23 Aug 2024 14 Aug 2024
424B3 Open Document Open Filing 424B3 21 Aug 2024 333-274931
8-K Open Document | Data Open Filing CURRENT REPORT 20 Aug 2024 14 Aug 2024 001-40608
424B3 Open Document Open Filing PROSPECTUS SUPPLEMENT 06 Aug 2024 333-274931
8-K Open Document | Data Open Filing CURRENT REPORT 06 Aug 2024 31 Jul 2024 001-40608
424B3 Open Document Open Filing PROSPECTUS SUPPLEMENT 02 Jul 2024 333-274931
8-K Open Document | Data Open Filing CURRENT REPORT 02 Jul 2024 26 Jun 2024 001-40608
424B3 Open Document Open Filing PROSPECTUS SUPPLEMENT 15 May 2024 333-274931
10-Q Open Document | Data Open Filing QUARTERLY REPORT 15 May 2024 31 Mar 2024 001-40608
8-K Open Document | Data Open Filing CURRENT REPORT 13 May 2024 13 May 2024 001-40608
8-K Open Document | Data Open Filing CURRENT REPORT 10 Apr 2024 10 Apr 2024 001-40608
424B3 Open Document Open Filing PROSPECTUS SUPPLEMENT 11 Mar 2024 333-274931
8-K Open Document | Data Open Filing CURRENT REPORT 11 Mar 2024 08 Mar 2024 001-40608
424B3 Open Document Open Filing PROSPECTUS SUPPLEMENT 07 Mar 2024 333-274931
8-K Open Document | Data Open Filing CURRENT REPORT 07 Mar 2024 04 Mar 2024 001-40608
424B3 Open Document Open Filing PROSPECTUS SUPPLEMENT 16 Feb 2024 333-274931
10-Q Open Document | Data Open Filing QUARTERLY REPORT 14 Feb 2024 31 Dec 2023 001-40608
424B3 Open Document Open Filing PROSPECTUS SUPPLEMENT 12 Feb 2024 333-274931
8-K Open Document | Data Open Filing CURRENT REPORT 02 Feb 2024 30 Jan 2024 001-40608
8-K Open Document | Data Open Filing CURRENT REPORT 30 Jan 2024 30 Jan 2024 001-40608
EFFECT Open Document Open Filing 28 Dec 2023 333-274931
424B3 Open Document Open Filing PROSPECTUS 28 Dec 2023 333-274931
CORRESP Open Document Open Filing 27 Dec 2023
S-1/A Open Document | Data Open Filing REGISTRATION STATEMENT 18 Dec 2023 333-274931
CORRESP Open Document Open Filing 15 Dec 2023
UPLOAD Open Document Open Filing 21 Nov 2023
10-Q Open Document | Data Open Filing QUARTERLY REPORT 20 Nov 2023 30 Sep 2023 001-40608
NT 10-Q Open Document Open Filing NOTIFICATION OF LATE FILING 15 Nov 2023 30 Sep 2023 001-40608
8-K/A Open Document | Data Open Filing AMENDMENT NO. 1 TO FORM 8-K 14 Nov 2023 29 Sep 2023 001-40608
CORRESP Open Document Open Filing 13 Nov 2023
S-1/A Open Document | Data Open Filing REGISTRATION STATEMENT 13 Nov 2023 333-274931
SC 13D Open Document Open Filing SCHEDULE 13D 30 Oct 2023 005-92694
UPLOAD Open Document Open Filing 23 Oct 2023
S-1 Open Document | Data Open Filing REGISTRATION STATEMENT 11 Oct 2023 333-274931
3 Open Document Open Filing 10 Oct 2023 29 Sep 2023
3 Open Document Open Filing 10 Oct 2023 29 Sep 2023
3 Open Document Open Filing 10 Oct 2023 29 Sep 2023
3 Open Document Open Filing 10 Oct 2023 29 Sep 2023
3 Open Document Open Filing 10 Oct 2023 29 Sep 2023
3 Open Document Open Filing 10 Oct 2023 29 Sep 2023
3 Open Document Open Filing 10 Oct 2023 29 Sep 2023
8-K Open Document | Data Open Filing FORM 8-K 05 Oct 2023 29 Sep 2023 001-40608
4 Open Document Open Filing 05 Oct 2023 29 Sep 2023
25-NSE Open Document Open Filing 05 Oct 2023 333-253322
4 Open Document Open Filing 02 Oct 2023 29 Sep 2023
4 Open Document Open Filing 02 Oct 2023 29 Sep 2023
4 Open Document Open Filing 02 Oct 2023 29 Sep 2023
4 Open Document Open Filing 02 Oct 2023 29 Sep 2023
4 Open Document Open Filing 02 Oct 2023 29 Sep 2023
4 Open Document Open Filing 02 Oct 2023 29 Sep 2023
4 Open Document Open Filing 02 Oct 2023 29 Sep 2023
425 Open Document Open Filing CURRENT REPORT 20 Sep 2023 001-40608
8-K Open Document | Data Open Filing CURRENT REPORT 20 Sep 2023 14 Sep 2023 001-40608
425 Open Document Open Filing CURRENT REPORT 18 Sep 2023 001-40608
8-K Open Document | Data Open Filing CURRENT REPORT 18 Sep 2023 18 Sep 2023 001-40608
425 Open Document Open Filing CURRENT REPORT 18 Aug 2023 001-40608
8-K Open Document | Data Open Filing CURRENT REPORT 18 Aug 2023 18 Aug 2023 001-40608
10-Q Open Document | Data Open Filing QUARTERLY REPORT 01 Aug 2023 30 Jun 2023 001-40608
425 Open Document Open Filing CURRENT REPORT 01 Aug 2023 001-40608
8-K Open Document | Data Open Filing CURRENT REPORT 01 Aug 2023 31 Jul 2023 001-40608
DEFA14A Open Document Open Filing DEFINITIVE ADDITIONAL MATERIALS 26 Jul 2023 001-40608
425 Open Document Open Filing CURRENT REPORT 26 Jul 2023 001-40608
8-K Open Document | Data Open Filing CURRENT REPORT 26 Jul 2023 25 Jul 2023 001-40608
8-K Open Document | Data Open Filing CURRENT REPORT 21 Jul 2023 20 Jul 2023 001-40608
425 Open Document Open Filing CURRENT REPORT 19 Jul 2023 001-40608
8-K Open Document | Data Open Filing CURRENT REPORT 19 Jul 2023 18 Jul 2023 001-40608
8-K Open Document | Data Open Filing CURRENT REPORT 19 Jul 2023 17 Jul 2023 001-40608
SEC STAFF LETTER Open Document Open Filing 18 Jul 2023
DEFA14A Open Document Open Filing CURRENT REPORT 12 Jul 2023 001-40608
8-K Open Document | Data Open Filing CURRENT REPORT 12 Jul 2023 11 Jul 2023 001-40608
EFFECT Open Document Open Filing 11 Jul 2023 333-267918
424B3 Open Document Open Filing PROSPECTUS 11 Jul 2023 333-267918
S-4/A Open Document Open Filing AMENDMENT NO. 7 TO FORM S-4 10 Jul 2023 333-267918
S-4/A Open Document Open Filing AMENDMENT NO. 6 TO FORM S-4 07 Jul 2023 333-267918
CORRESP Open Document Open Filing 06 Jul 2023
CORRESP Open Document Open Filing 30 Jun 2023
S-4/A Open Document Open Filing FORM S-4/A 30 Jun 2023 333-267918
UPLOAD Open Document Open Filing 26 Jun 2023
8-K Open Document | Data Open Filing FORM 8-K 23 Jun 2023 22 Jun 2023 001-40608
425 Open Document Open Filing FORM 425 21 Jun 2023 001-40608
8-K Open Document | Data Open Filing FORM 8-K 20 Jun 2023 16 Jun 2023 001-40608
UPLOAD Open Document Open Filing 16 Jun 2023
DEF 14A Open Document Open Filing FORM DEF 14A 16 Jun 2023 16 Jun 2023 001-40608
S-4/A Open Document Open Filing FORM S-4/A 16 Jun 2023 333-267918
CORRESP Open Document Open Filing 15 Jun 2023
8-K Open Document | Data Open Filing FORM 8-K 09 Jun 2023 06 Jun 2023 001-40608
PRER14A Open Document Open Filing PRER 14A 02 Jun 2023 001-40608
PRE 14A Open Document Open Filing PRE 14A 25 May 2023 25 May 2023 001-40608
425 Open Document Open Filing FORM 425 19 May 2023 001-40608
8-K Open Document | Data Open Filing FORM 8-K 19 May 2023 19 May 2023 001-40608
10-Q Open Document | Data Open Filing FORM 10-Q 18 May 2023 31 Mar 2023 001-40608
UPLOAD Open Document Open Filing 17 May 2023
NT 10-Q Open Document Open Filing FORM NT 10-Q 16 May 2023 15 May 2023 001-40608
SEC STAFF LETTER Open Document Open Filing 09 May 2023
S-4/A Open Document Open Filing FORM S-4/A 02 May 2023 333-267918
CORRESP Open Document Open Filing 01 May 2023
425 Open Document Open Filing FORM 425 26 Apr 2023 001-40608
8-K Open Document | Data Open Filing FORM 8-K 26 Apr 2023 26 Apr 2023 001-40608
425 Open Document Open Filing FORM 425 24 Apr 2023 001-40608
8-K Open Document | Data Open Filing FORM 8-K 24 Apr 2023 20 Apr 2023 001-40608
8-K Open Document | Data Open Filing FORM 8-K 21 Apr 2023 19 Apr 2023 001-40608
425 Open Document Open Filing FORM 425 13 Apr 2023 001-40608
8-K Open Document | Data Open Filing FORM 8-K 13 Apr 2023 12 Apr 2023 001-40608
8-K Open Document | Data Open Filing FORM 8-K 05 Apr 2023 03 Apr 2023 001-40608
425 Open Document Open Filing FORM 425 20 Mar 2023 001-40608
8-K Open Document | Data Open Filing FORM 8-K 20 Mar 2023 17 Mar 2023 001-40608
10-K Open Document | Data Open Filing FORM 10-K 14 Mar 2023 31 Dec 2022 001-40608
SC 13G/A Open Document Open Filing KARPUS INVESTMENT MGT / TRADEUP ACQUISITION CORP. - SCHEDULE 13G/A(#3) 10 Mar 2023 005-92694
425 Open Document Open Filing FORM 425 08 Mar 2023 001-40608
8-K Open Document | Data Open Filing FORM 8-K 03 Mar 2023 03 Mar 2023 001-40608
425 Open Document Open Filing FORM 425 21 Feb 2023 001-40608
8-K Open Document | Data Open Filing FORM 8-K 21 Feb 2023 17 Feb 2023 001-40608
SEC STAFF LETTER Open Document Open Filing 17 Feb 2023
UPLOAD Open Document Open Filing 17 Feb 2023
SC 13G/A Open Document Open Filing 14 Feb 2023 005-92694
SC 13G/A Open Document Open Filing KARPUS INVESTMENT MGT / TRADEUP ACQUISITION CORP. - SCHEDULE 13G/A(#2) 14 Feb 2023 005-92694
S-4/A Open Document Open Filing 03 Feb 2023 333-267918
SC 13G/A Open Document Open Filing 31 Jan 2023 005-92694
425 Open Document Open Filing 425 24 Jan 2023 001-40608
8-K Open Document | Data Open Filing FORM 8-K 24 Jan 2023 19 Jan 2023 001-40608
3 Open Document Open Filing 09 Jan 2023 05 Jan 2023
8-K Open Document | Data Open Filing FORM 8-K 05 Jan 2023 29 Dec 2022 001-40608
UPLOAD Open Document Open Filing 29 Dec 2022
8-K Open Document | Data Open Filing FORM 8-K 29 Dec 2022 22 Dec 2022 001-40608
S-4/A Open Document Open Filing FORM S-4/A 19 Dec 2022 333-267918
CORRESP Open Document Open Filing 16 Dec 2022
UPLOAD Open Document Open Filing 07 Dec 2022
DEF 14A Open Document Open Filing DEF14A 06 Dec 2022 06 Dec 2022 001-40608
PRER14A Open Document Open Filing PRER14A 02 Dec 2022 001-40608
PRE 14A Open Document Open Filing PRE 14A 25 Nov 2022 25 Nov 2022 001-40608
UPLOAD Open Document Open Filing 14 Nov 2022
10-Q Open Document | Data Open Filing FORM 10-Q 14 Nov 2022 30 Sep 2022 001-40608
S-4 Open Document Open Filing FORM S-4 18 Oct 2022 333-267918
8-K Open Document | Data Open Filing FORM 8-K 11 Oct 2022 10 Oct 2022 001-40608
8-K Open Document | Data Open Filing FORM 8-K 03 Oct 2022 30 Sep 2022 001-40608
10-Q Open Document | Data Open Filing 10-Q 08 Aug 2022 30 Jun 2022 001-40608
8-K Open Document | Data Open Filing FORM 8-K 27 Jul 2022 25 Jul 2022 001-40608
10-Q Open Document | Data Open Filing 10-Q 16 May 2022 31 Mar 2022 001-40608
10-K Open Document | Data Open Filing 10-K 29 Mar 2022 31 Dec 2021 001-40608
SC 13G/A Open Document Open Filing SC 13G/A 17 Mar 2022 005-92694
4 Open Document Open Filing OWNERSHIP DOCUMENT 17 Mar 2022 04 Mar 2022
SC 13G/A Open Document Open Filing KARPUS INVESTMENT MGT / TRADEUP ACQUISITION CORP. - SCHEDULE 13G/A(#1) 14 Feb 2022 005-92694
SC 13G Open Document Open Filing 14 Feb 2022 005-92694
SC 13G Open Document Open Filing 04 Feb 2022 005-92694
SC 13G/A Open Document Open Filing 02 Feb 2022 005-92694
10-Q Open Document | Data Open Filing 10-Q 10 Nov 2021 30 Sep 2021 001-40608
SC 13G/A Open Document Open Filing 08 Oct 2021 005-92694
SC 13G Open Document Open Filing KARPUS INVESTMENT MGT / TRADEUP ACQUISITION CORP - SCHEDULE 13G 08 Oct 2021 005-92694
8-K Open Document Open Filing FORM 8-K 03 Sep 2021 03 Sep 2021 001-40608
SC 13G/A Open Document Open Filing 27 Jul 2021 005-92694
3 Open Document Open Filing OWNERSHIP DOCUMENT 26 Jul 2021 14 Jul 2021
3 Open Document Open Filing OWNERSHIP DOCUMENT 22 Jul 2021 14 Jul 2021
3 Open Document Open Filing OWNERSHIP DOCUMENT 22 Jul 2021 14 Jul 2021
3 Open Document Open Filing OWNERSHIP DOCUMENT 22 Jul 2021 14 Jul 2021
SC 13G Open Document Open Filing SC 13G 22 Jul 2021 005-92694
3 Open Document Open Filing OWNERSHIP DOCUMENT 22 Jul 2021 14 Jul 2021
3 Open Document Open Filing OWNERSHIP DOCUMENT 22 Jul 2021 14 Jul 2021
3 Open Document Open Filing OWNERSHIP DOCUMENT 22 Jul 2021 14 Jul 2021
8-K Open Document Open Filing FORM 8-K 22 Jul 2021 19 Jul 2021 001-40608
SC 13G Open Document Open Filing SC 13G 22 Jul 2021 005-92694
SC 13G Open Document Open Filing 20 Jul 2021 005-92694
8-K Open Document Open Filing FORM 8K 19 Jul 2021 14 Jul 2021 001-40608
424B4 Open Document Open Filing PROSPECTUS 19 Jul 2021 333-253322
CERT Open Document Open Filing 15 Jul 2021 001-40608
EFFECT Open Document Open Filing 14 Jul 2021 333-253322
8-A12B Open Document Open Filing 8-A12B 14 Jul 2021 001-40608
CORRESP Open Document Open Filing 13 Jul 2021
CORRESP Open Document Open Filing 13 Jul 2021
CORRESP Open Document Open Filing 09 Jul 2021
S-1/A Open Document Open Filing FORM S-1/A 09 Jul 2021 333-253322
UPLOAD Open Document Open Filing 08 Jul 2021
S-1/A Open Document Open Filing S-1/A 01 Jul 2021 333-253322
CORRESP Open Document Open Filing 24 Jun 2021
CORRESP Open Document Open Filing 24 Jun 2021
CORRESP Open Document Open Filing 22 Jun 2021
CORRESP Open Document Open Filing 22 Jun 2021
CORRESP Open Document Open Filing 11 Jun 2021
S-1/A Open Document Open Filing S-1/A 11 Jun 2021 333-253322
UPLOAD Open Document Open Filing 02 Jun 2021
CORRESP Open Document Open Filing 28 May 2021
S-1/A Open Document Open Filing S-1/A 28 May 2021 333-253322
UPLOAD Open Document Open Filing 27 May 2021
S-1/A Open Document Open Filing S-1/A 25 May 2021 333-253322
S-1/A Open Document Open Filing S-1/A 18 May 2021 333-253322
CORRESP Open Document Open Filing 18 May 2021
UPLOAD Open Document Open Filing 17 May 2021
S-1/A Open Document Open Filing S-1/A 07 May 2021 333-253322
S-1/A Open Document Open Filing S-1/A 12 Apr 2021 333-253322
CORRESP Open Document Open Filing 09 Apr 2021
UPLOAD Open Document Open Filing 09 Apr 2021
S-1/A Open Document Open Filing FORM S-1/A 29 Mar 2021 333-253322
CORRESP Open Document Open Filing 26 Mar 2021
UPLOAD Open Document Open Filing 18 Mar 2021
S-1 Open Document Open Filing FORM S-1 19 Feb 2021 333-253322