Kroeker Nathan 4

4 · Eos Energy Enterprises, Inc. · Filed Jan 26, 2026

AI-generated summary of this filing

Updated Jan 26, 2026

Eos Energy (EOSE) CCO Nathan Kroeker Sells 50,000 Shares

What Happened

Nathan Kroeker, Chief Commercial Officer and interim CFO of Eos Energy (EOSE), had 100,000 restricted stock units (RSUs) convert to 100,000 shares on Jan 23, 2026 (reported as exercise/conversion of a derivative at $0.00). Following that vesting event, 50,000 shares were sold in the open market on Jan 26, 2026 at a weighted average price of $16.04, generating approximately $802,000 in proceeds.
The sale was executed under an existing Rule 10b5-1 trading plan and was used to cover estimated tax withholding related to the RSU vesting.

Key Details

Transaction dates: Jan 23, 2026 (RSU conversion/exercise); Jan 26, 2026 (open-market sale).
Sale: 50,000 shares sold at a weighted average price of $16.04; reported proceeds ≈ $802,000. Reported sale prices ranged from $15.71 to $16.92 (per filing).
Conversion: 100,000 RSUs converted to shares on Jan 23, 2026 (reported at $0.00 per share).
Shares owned after transaction: Not specified in the provided filing.
Notable footnotes:
- F1: Sale effected automatically under a 10b5-1 plan (adopted Sept 15, 2025) to cover estimated tax withholding on vested RSUs.
- F2: Price is a weighted average; detailed breakdown available on request.
- F3/F4: RSUs represent contingent rights to one share each and vest in three equal annual installments.
- F5: Not applicable.
Filing: Reported on Jan 26, 2026 for transactions on Jan 23 and Jan 26; appears to be timely.

Context

These entries reflect RSU vesting and an automatic sale to cover tax obligations, not necessarily a discretionary sale based on views of the company. For retail investors, purchases typically carry more direct interpretive weight; this filing documents routine vesting and tax-related selling under a pre-established plan.

Form 4

Period: 2026-01-23

CCO and Interim CFO

Transactions

Exercise/Conversion
Common Stock
2026-01-23+100,000→ 712,512 total
Sale
Common Stock
[F1][F2]
2026-01-26$16.04/sh−50,000$802,000→ 662,512 total
Exercise/Conversion
Restricted Stock Units
[F3][F4][F5]
2026-01-23−100,000→ 0 total
→ Common Stock (100,000 underlying)

Footnotes (5)

[F1]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 15, 2025 to cover estimated tax withholding obligations in connection with the vesting of restricted stock units.
[F2]The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $15.71 to $16.92, 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.
[F3]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.
[F4]Each restricted stock unit ("RSU") represents a contingent right to receive one share of common stock.
[F5]Not applicable.

Signature

/s/ Michael Silberman as attorney-in-fact for Nathan Kroeker|2026-01-26

1 file