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EOSENasdaq
Eos Energy Enterprises, Inc.
Miscellaneous Electrical Machinery, Equipment & Supplies · DE · CIK 1805077
Eos Energy Enterprises, Inc. manufactures and sells energy storage solutions
red 8-K · 90d
$2.06B
Market cap
$6.09
Last close
+2.7%
1D
-17.0%
5D
16.9M
Volume
Price · last 39 sessions-4.5%
May 4L $5.93 · H $9.42Jun 29
250
Total filings
Jun 5, 2026
Last filing
12/31
Fiscal year end
8-KShareholder Vote · Reg FD DisclosureJun 5, 2026SC 13D/ASC 13D/AMay 14, 202610-Q10-QMay 13, 20268-KMaterial Agreement · Results of OperationsMay 13, 20268-KExecutive ChangeApr 30, 2026SC 13D/ASC 13D/AApr 20, 2026DEF 14ADEF 14AApr 14, 20268-KResults of Operations · Reg FD DisclosureApr 9, 2026DEFA14ADEFA14AMar 31, 20268-KExecutive ChangeMar 31, 20268-KExecutive ChangeMar 26, 202610-K10-KFeb 26, 20268-KResults of OperationsFeb 26, 20268-KMaterial AgreementFeb 17, 20268-KExecutive ChangeDec 22, 20258-KMaterial Agreement · New Debt / ObligationNov 24, 2025424B5PROSPECTUS SUPPLEMENTNov 21, 2025424B5PROSPECTUS SUPPLEMENTNov 18, 20258-KMaterial Agreement · Equity IssuanceNov 18, 202510-Q10-QNov 5, 20258-KResults of OperationsNov 5, 20258-KReg FD DisclosureOct 31, 20258-KShareholder VoteOct 17, 2025DEFA14ADEFA14ASep 26, 2025DEFA14ADEFA14ASep 2, 2025DEF 14ADEF 14ASep 2, 202510-Q10-QJul 30, 20258-KResults of OperationsJul 30, 20258-KExecutive ChangeJul 29, 20258-KNew Debt / Obligation · Reg FD DisclosureJul 1, 20258-KDebt Acceleration · Material AgreementJun 3, 20258-KMaterial Agreement · Company UpdateJun 2, 2025424B5PROSPECTUS SUPPLEMENTJun 2, 2025424B5PROSPECTUS SUPPLEMENTMay 29, 20258-KMaterial Agreement · Company UpdateMay 29, 20258-KExecutive ChangeMay 27, 20258-KShareholder VoteMay 16, 202510-Q10-QMay 6, 20258-KResults of OperationsMay 6, 2025DEFA14ADEFA14AApr 29, 2025DEF 14ADEF 14AMar 27, 20258-KExecutive ChangeMar 27, 20258-KExecutive ChangeMar 5, 202510-K10-KMar 4, 20258-KResults of OperationsMar 4, 20258-KNew Debt / Obligation · Equity IssuanceJan 27, 20258-KResults of Operations · Reg FD DisclosureJan 16, 20258-KExecutive Change · New Debt / ObligationDec 20, 20248-KMaterial Agreement · New Debt / ObligationDec 3, 20248-KCompany UpdateNov 12, 202410-Q10-QNov 5, 20248-KResults of OperationsNov 5, 20248-KNew Debt / Obligation · Equity IssuanceNov 4, 20248-KEquity Issuance · Bylaw AmendmentSep 12, 2024DEFA14ADEFINITIVE ADDITIONAL MATERIALSSep 3, 2024DEFA14ADEFINITIVE ADDITIONAL MATERIALSAug 30, 20248-KNew Debt / Obligation · Equity IssuanceAug 30, 2024DEFA14ADEFINITIVE ADDITIONAL MATERIALSAug 29, 2024DEFA14ADEFINITIVE ADDITIONAL MATERIALSAug 26, 2024DEFA14ADEFINITIVE ADDITIONAL MATERIALSAug 19, 2024DEFA14ADEFINITIVE ADDITIONAL MATERIALSAug 16, 2024DEF 14APROXY STATEMENTAug 8, 2024DEFA14ASOLICITING MATERIAL UNDER 240.14A-12Aug 7, 2024DEFA14ASOLICITING MATERIALAug 7, 202410-Q10-QAug 6, 20248-KResults of OperationsAug 6, 20248-KExecutive ChangeJul 30, 20248-KExecutive ChangeJul 29, 20248-KCompany UpdateJul 11, 2024SC 13DSC 13DJun 28, 2024DEFA14ASOLICITING MATERIAL UNDER 240.14A-12Jun 26, 2024DEFA14ASOLICITING MATERIALJun 24, 2024DEFA14ACURRENT REPORTJun 24, 20248-KExecutive Change · Material AgreementJun 24, 20248-KDelisting NoticeMay 24, 202410-Q10-QMay 14, 20248-KResults of OperationsMay 14, 20248-KShareholder Vote · Reg FD DisclosureMay 3, 20248-KResults of Operations · Reg FD DisclosureApr 23, 2024DEF 14ADEF 14AApr 2, 2024
Insider Activity
◆ Cluster Buy · 3 insidersIn the 90 days to Mar 9, 2026: 3 insiders bought $693K · 2 sold $1.5M.
| Date | Insider | Action | Shares | Price | Value |
|---|---|---|---|---|---|
| Mar 9, 2026 | Urban DavidDirector | Buy | 16,250 | $6.16 | $100K |
| Mar 4, 2026 | Mastrangelo JoeChief Executive Officer | Buy | 23,900 | $6.58 | $157K |
| Mar 2, 2026 | Mastrangelo JoeChief Executive Officer | Buy | 60,000 | $5.75 | $345K |
| Mar 2, 2026 | Dimitrief AlexanderDirector | Buy | 15,000 | $6.04 | $91K |
| Jan 26, 2026 | Kroeker NathanCCO and Interim CFO | Sell | 50,000 | $16.04 | $802K |
| Jan 23, 2026 | Silberman Michael WChief Legal Officer | Sell | 41,667 | $17.74 | $739K |
| Dec 8, 2025 | Stidolph Russell MonokiDirector | Sell | 235,367 | $14.89 | $3.5M |
| Dec 8, 2025 | Stidolph Russell MonokiDirector | Sell | 29,999 | $15.36 | $461K |
| Dec 8, 2025 | Stidolph Russell MonokiDirector | Sell | 768 | $14.80 | $11K |
| Dec 5, 2025 | Stidolph Russell MonokiDirector | Sell | 500,000 | $14.99 | $7.5M |
| Dec 5, 2025 | Bornstein Jeffrey SDirector | Sell | 32,328 | $15.05 | $487K |
| Dec 4, 2025 | Walters MarianDirector | Sell | 50,000 | $15.81 | $791K |
| Dec 4, 2025 | Bornstein Jeffrey SDirector | Sell | 8,000 | $15.75 | $126K |
Open-market buys & sells (Form 4, transaction codes P/S). Source: SEC structured insider data.
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