Eos Energy Enterprises Inc.
Last updated September 27, 2026
Organization details
- Legal name
- Eos Energy Enterprises Inc.
- Former names
- B. Riley Principal Merger Corp. II
- Ownership
- Public
- Status
- Active
- SIC code
- 3690 — Miscellaneous Electrical Machinery, Equipment & Supplies
- Jurisdiction of incorporation
- Delaware
- Headquarters city
- Pittsburgh
- Headquarters state / province
- Pennsylvania
- Headquarters country
- United States
- Fiscal year end
- December
- Ticker symbol
- EOSE
- Primary stock exchange
- Nasdaq
Identifiers
- SEC CIK
- 0001805077
Board of directors
-
Alexander Dimitrief · DirectorSince 2023
-
Audrey Ann Zibelman · DirectorSince 2023
-
Claude Demby · DirectorSince 2023
-
David Urban · DirectorSince 2024
-
Gregory S. Nixon · DirectorSince 2024
-
Haiyan Song · DirectorSince 2026
-
Jeff McNeil · DirectorSince 2023
-
Jeffrey S. Bornstein · DirectorSince 2023
-
Joe Mastrangelo · Director · Chief Executive OfficerSince 2023
-
Joseph Nigro · DirectorSince 2025
-
Marian Walters · DirectorSince 2023
-
Nathaniel Fick · DirectorSince 2026
-
Nicholas P. Robinson · DirectorSince 2024
-
Russell Monoki Stidolph · DirectorSince 2023
Chief executives
Joe Mastrangelo
· Chief Executive Officer
Dates unknown
Director election results
Annual meeting of June 3, 2026. Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
-
76.7%
-
96.7%
-
98.0%
Board connections
4 of this board's directors also sit on 5 other boards.
- via Marian Walters
- via Jeffrey S. Bornstein
- via David Urban
- via Joseph Nigro
- via David Urban
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
- Bought, last 12 months
- $751,662
- 6 purchases by 4 insiders
- Sold, last 12 months
- $18,027,558
- 23 sales by 8 insiders
| Date | Insider | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Sep 16, 2026 | Joe Mastrangelo Director, Officer (Chief Executive Officer) | Open-market sale | −250,000 | $3.92 | $980,000 |
| Sep 16, 2026 | Puri Sumeet Officer (Chief Accounting Officer) | Open-market sale | −43,750 | $3.92 | $171,500 |
| Sep 14, 2026 | Joe Mastrangelo Director, Officer (Chief Executive Officer) | Grant or award | +500,000 | — | — |
| Sep 14, 2026 | Puri Sumeet Officer (Chief Accounting Officer) | Option exercise | +87,500 | — | — |
| Sep 14, 2026 | Haiyan Song Director | Open-market purchase | +5,000 | $3.84 | $19,200 |
| Sep 11, 2026 | Haiyan Song Director | Open-market purchase | +10,000 | $3.95 | $39,500 |
| Sep 9, 2026 | Puri Sumeet Officer (Chief Accounting Officer) | Open-market sale | −34,167 | $4.13 | $141,110 |
| Sep 5, 2026 | Puri Sumeet Officer (Chief Accounting Officer) | Option exercise | +68,333 | — | — |
| Jul 28, 2026 | Kroeker Nathan Officer (Chief Commercial Officer) | Open-market sale | −110,417 | $3.36 | $371,001 |
| Jul 28, 2026 | Puri Sumeet Officer (Chief Accounting Officer) | Open-market sale | −29,167 | $3.36 | $98,001 |
| Jul 27, 2026 | Joe Mastrangelo Director, Officer (Chief Executive Officer) | Open-market sale | −159,154 | $3.61 | $574,546 |
| Jul 25, 2026 | Joe Mastrangelo Director, Officer (Chief Executive Officer) | Option exercise | +333,334 | — | — |
| Jul 25, 2026 | Kroeker Nathan Officer (Chief Commercial Officer) | Option exercise | +220,834 | — | — |
| Jul 25, 2026 | Puri Sumeet Officer (Chief Accounting Officer) | Option exercise | +58,334 | — | — |
| Jul 21, 2026 | Jeffrey S. Bornstein Director | Option exercise | +9,558 | $5.48 | $52,378 |
Reviews (0)
Sign in to write a review.
No reviews yet. Be the first to write one.