Sumeet Puri - 26 Jun 2026 Form 4 Insider Report for Eos Energy Enterprises, Inc. (EOSE)

Reporting relationship: Chief Accounting Officer
Issuer ticker: EOSE
Reported as of: 26 Jun 2026
Net transaction value: -$51,703
SEC form: 4
Accepted by SEC: 30 Jun 2026, 17:07:33 UTC
Prior SEC filing: 08 Sep 2025
Source filing: View source filing
Reporting owner signature: /s/ Michael Silberman as attorney-in-fact for Sumeet Puri

Key filing fact

Sumeet Puri filed Form 4 for Eos Energy Enterprises, Inc. (EOSE) on 30 Jun 2026.

Key facts

This page summarizes Sumeet Puri's Form 4 filing for Eos Energy Enterprises, Inc. (EOSE).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 30 Jun 2026, 17:07.

Change

Previous filing in this sequence was filed on 08 Sep 2025.
Current net transaction value: -$51,703.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001991521 Primary reporting owner

Puri Sumeet

Relationship: Chief Accounting Officer
Address: C/O EOS ENERGY ENTERPRISES, INC., 3920 PARK AVENUE, EDISON
Signature: /s/ Michael Silberman as attorney-in-fact for Sumeet Puri
Signature date: 30 Jun 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

EOSE transaction

Common Stock

Options Exercise

Transaction value
Shares: +17,645
Change %: +11%
Price: $0.000000^*
Shares after: 181,935
Date: 26 Jun 2026
Ownership: Direct
Footnotes: F1

EOSE transaction

Common Stock

Sale

Transaction value: $51,703
Shares: -8,823
Change %: -4.8%
Price: $5.86
Shares after: 173,112
Date: 30 Jun 2026
Ownership: Direct
Footnotes: F2, F3

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

EOSE transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -17,545
Change %: -33%
Price: $0.000000^*
Shares after: 35,389
Date: 26 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 17,545
Exercise price
Footnotes: F1, F4, F5

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 5 footnotes

Footnote F1

Each restricted stock unit ("RSU") represents a contingent right to receive one share of common stock.

Footnote F2

The sales reported in this Form 4 were effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 12, 2025 to cover estimated tax withholding obligations in connection with the vesting of restricted stock units.

Footnote F3

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.68 to $6.12, 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.

Footnote F4

The reporting person received a grant of RSUs under the Issuer's 2020 Incentive Plan, which will vest in three equal installments on each of the first three anniversaries of the grant date, subject to continued service through each vesting date.

Footnote F5

Not applicable.