SEC Form 4 · accession 0001628280-26-061188
Eos Energy Enterprises, Inc. · EOSE
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Sumeet Puri
Officer — Chief Accounting Officer
Period of report
Sep 5, 2026
Accepted (ET)
Sep 9, 2026 · 6:05 pm EDT
Rule 10b5-1 plan
yes — trade under a plan
Issuer CIK
0001805077
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common StockF1 | Sep 5, 2026 | M | 68,333 | $0.00 | A | 270,612 | D | |
| Common StockF3 | Sep 9, 2026 | S | 34,167 | $4.13 | D | 236,445 | D |
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Restricted Stock UnitsF4,F1,F5 | — | Sep 5, 2026 | M | 68,333 | D | — | — | Common Stock | 68,333 | 0 | D |
Explanation of responses
- F1Each restricted stock unit ("RSU") represents a contingent right to receive one share of common stock.
- F2The sales reported in this Form 4 were effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 15, 2025 to cover estimated tax withholding obligations in connection with the vesting of restricted stock units.
- F3The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $4.07 to $4.27, inclusive. The reporting person undertakes to provide the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.
- F4The reporting person received a grant of RSUs under the Issuer's 2020 Incentive Plan, which will vest in three installments on each of the first three anniversaries of the grant date, subject to continued service through each vesting date.
- F5Not applicable.