Mailing Address 26440 SW PARKWAY AVE. BLDG. 83 WILSONVILLE OR 97070
Business Address 26440 SW PARKWAY AVE. BLDG. 83 WILSONVILLE OR 97070 (855) 423-9920
ESS Tech, Inc. CIK#: 0001819438 (see all company filings)

SIC: 3690 - MISCELLANEOUS ELECTRICAL MACHINERY, EQUIPMENT & SUPPLIES
State location: OR | State of Inc.: DE | Fiscal Year End: 1231
formerly: ACON S2 Acquisition Corp. (filings through 2021-10-08)
(CF Office: 04 Manufacturing)
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File Number: 001-39525

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Items 1 - 40  001-39525 Filings RSS Feed
Filings Format Description Filing Date File/Film Number
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001628280-25-017857 (34 Act)  Size: 16 KB
2025-04-15 001-39525
25839722
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001628280-25-017854 (34 Act)  Size: 5 KB
2025-04-15 001-39525
25839710
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001628280-25-016780 (34 Act)  Size: 6 KB
2025-04-04 001-39525
25814578
8-K  Documents   Interactive Data Current report, items 1.01 and 9.01
Acc-no: 0001628280-25-015704 (34 Act)  Size: 690 KB
2025-03-31 001-39525
25794775
10-K  Documents   Interactive Data Annual report [Section 13 and 15(d), not S-K Item 405]
Acc-no: 0001628280-25-015649 (34 Act)  Size: 10 MB
2025-03-31 001-39525
25793272
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001628280-25-015647 (34 Act)  Size: 438 KB
2025-03-31 001-39525
25793214
8-K  Documents   Interactive Data Current report, items 3.01, 7.01, and 9.01
Acc-no: 0001628280-25-015467 (34 Act)  Size: 231 KB
2025-03-28 001-39525
25787011
3  Documents Initial statement of beneficial ownership of securities
Acc-no: 0001628280-25-005765 (34 Act)  Size: 445 KB
2025-02-14 001-39525
25629800
8-K  Documents   Interactive Data Current report, items 5.02 and 9.01
Acc-no: 0001628280-25-005510 (34 Act)  Size: 245 KB
2025-02-14 001-39525
25622220
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001628280-24-048335 (34 Act)  Size: 5 KB
2024-11-18 001-39525
241473135
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001628280-24-047692 (34 Act)  Size: 6 MB
2024-11-14 001-39525
241455895
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001628280-24-047577 (34 Act)  Size: 466 KB
2024-11-13 001-39525
241453825
8-K  Documents   Interactive Data Current report, items 1.01 and 2.03
Acc-no: 0001628280-24-045278 (34 Act)  Size: 213 KB
2024-11-05 001-39525
241427479
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001628280-24-040700 (34 Act)  Size: 5 KB
2024-09-17 001-39525
241305837
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001628280-24-039163 (34 Act)  Size: 15 KB
2024-09-03 001-39525
241274887
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001628280-24-039157 (34 Act)  Size: 4 KB
2024-09-03 001-39525
241274828
8-K/A  Documents   Interactive Data [Amend] Current report, item 5.07
Acc-no: 0001628280-24-038379 (34 Act)  Size: 209 KB
2024-08-26 001-39525
241237614
8-K  Documents   Interactive Data Current report, items 3.03, 5.03, 5.07, 7.01, and 8.01
Acc-no: 0001628280-24-038349 (34 Act)  Size: 272 KB
2024-08-23 001-39525
241236306
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001628280-24-037276 (34 Act)  Size: 6 MB
2024-08-14 001-39525
241209347
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001628280-24-037187 (34 Act)  Size: 464 KB
2024-08-14 001-39525
241207596
DEFR14A  Documents   Interactive Data Revised definitive proxy soliciting materials
Acc-no: 0001628280-24-036162 (34 Act)  Size: 1 MB
2024-08-08 001-39525
241188668
PRE 14A  Documents   Interactive Data Other preliminary proxy statements
Acc-no: 0001628280-24-033203 (34 Act)  Size: 1 MB
2024-07-29 001-39525
241148543
DEF 14A  Documents   Interactive Data Other definitive proxy statements
Acc-no: 0001628280-24-033183 (34 Act)  Size: 1 MB
2024-07-26 001-39525
241147899
SD  Documents Specialized disclosure report
Acc-no: 0001628280-24-025191 (34 Act)  Size: 50 KB
2024-05-24 001-39525
24984348
8-K  Documents   Interactive Data Current report, item 5.07
Acc-no: 0001628280-24-024545 (34 Act)  Size: 215 KB
2024-05-21 001-39525
24969706
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001628280-24-023951 (34 Act)  Size: 7 KB
2024-05-17 001-39525
24958629
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001628280-24-023949 (34 Act)  Size: 5 KB
2024-05-17 001-39525
24958625
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001628280-24-023947 (34 Act)  Size: 10 KB
2024-05-17 001-39525
24958619
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001628280-24-023945 (34 Act)  Size: 5 KB
2024-05-17 001-39525
24958611
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001628280-24-023943 (34 Act)  Size: 5 KB
2024-05-17 001-39525
24958604
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001628280-24-023941 (34 Act)  Size: 5 KB
2024-05-17 001-39525
24958595
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001628280-24-023939 (34 Act)  Size: 5 KB
2024-05-17 001-39525
24958591
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001628280-24-023439 (34 Act)  Size: 4 KB
2024-05-15 001-39525
24948465
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001628280-24-022822 (34 Act)  Size: 5 KB
2024-05-13 001-39525
24937910
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001628280-24-022430 (34 Act)  Size: 5 KB
2024-05-09 001-39525
24932587
4  Documents Statement of changes in beneficial ownership of securities
Acc-no: 0001628280-24-021833 (34 Act)  Size: 5 KB
2024-05-08 001-39525
24927987
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001628280-24-021198 (34 Act)  Size: 6 MB
2024-05-08 001-39525
24923396
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001628280-24-021087 (34 Act)  Size: 422 KB
2024-05-07 001-39525
24921884
ARS  Documents Annual Report to Security Holders
Acc-no: 0001628280-24-015077 (34 Act)  Size: 14 MB
2024-04-05 001-39525
24827182
DEFA14A  Documents Additional definitive proxy soliciting materials and Rule 14(a)(12) material
Acc-no: 0001628280-24-015074 (34 Act)  Size: 574 KB
2024-04-05 001-39525
24827177