A Form 144 notice of proposed sale of securities was filed on October 29, 2026, by Nathan Kroeker, a former officer of Eos Energy Enterprises, Inc., disclosing a planned sale of 147,208 shares of common stock on NASDAQ:EOSE.

Key Highlights

  • Seller: Nathan Kroeker, identified as a former officer of Eos Energy Enterprises, Inc.
  • Shares proposed for sale: 147,208 shares of common stock, with an aggregate market value of $290,267.53.
  • Purpose stated: According to the filing, "The shares reported on this Form 144 will be sold to cover estimated tax withholding obligations from the vesting of restricted stock units."
  • Acquisition source: The shares were acquired on October 29, 2026, via RSU vesting from the issuer.
  • Broker: UBS Financial Services Inc., 1000 Harbor Blvd, 3rd Floor, Weehawken, NJ 07086.
  • Prior sales: Kroeker sold 165,625 shares on September 16, 2026, with gross proceeds of $687,343, according to the filing's three-month sales history.
  • Total shares outstanding: 364,167,744 shares of common stock, as reported in the filing.

Eos Energy Former Officer Files Notice of Proposed Stock Sale for RSU Tax Obligations

According to the Form 144 filing submitted to the U.S. Securities and Exchange Commission, Nathan Kroeker, a former officer of Eos Energy Enterprises, Inc. (NASDAQ:EOSE), has provided notice of a proposed sale of 147,208 shares of the company's common stock. The approximate date of sale listed in the filing is October 29, 2026, and the aggregate market value of the shares to be sold is reported as $290,267.53. The filing states that the sale is intended to cover estimated tax withholding obligations arising from the vesting of restricted stock units.

The securities to be sold were acquired on October 29, 2026, through RSU vesting from the issuer, according to the filing. The filing indicates no cash purchase was involved. The signing party is Joseph Cassidy, acting as attorney-in-fact for Nathan Kroeker on behalf of UBS Financial Services Inc. The filing also discloses that in the three months preceding this notice, Kroeker sold 165,625 shares of common stock on September 16, 2026, generating gross proceeds of $687,343. The combined context of these disclosures is provided as required under Rule 144's aggregation provisions.

Eos Energy Enterprises, Inc. is listed on NASDAQ and is headquartered at Two Allegheny Center, Nova Tower 2, Pittsburgh, Pennsylvania 15212, as stated in the filing. The total number of shares of common stock outstanding is reported as 364,167,744. The notice was dated October 29, 2026.

What Was Disclosed

The filing disclosed a proposed sale of 147,208 common shares by former officer Nathan Kroeker, valued at $290,267.53, acquired through RSU vesting on October 29, 2026, and intended to cover tax withholding obligations, with UBS Financial Services Inc. acting as broker.