STOCK TITAN

Eos Energy (NASDAQ: EOSE) CCO trades RSU shares under 10b5-1 plan

Filing Impact
(Moderate)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

Eos Energy Enterprises chief commercial officer and interim CFO Nathan Kroeker reported RSU vesting and related share sales. On July 3 and July 5, he exercised restricted stock units into a total of 158,618 shares of common stock at a conversion price of $0.00 per share.

On July 7, Kroeker sold 79,309 shares of common stock in open-market transactions at a weighted average price of $4.68 per share, under a pre-arranged Rule 10b5-1 trading plan adopted on September 15, 2025 to cover estimated tax withholding obligations tied to the RSU vesting. Following these transactions, he directly holds 777,110 shares of Eos Energy common stock.

Positive

  • None.

Negative

  • None.
Insider Kroeker Nathan
Role CCO and Interim CFO
Sold 79,309 shs ($371K)
Type Security Shares Price Value
Sale Common Stock 79,309 $4.68 $371K
Exercise Restricted Stock Units 105,008 $0.00 --
Exercise Common Stock 105,008 $0.00 --
Exercise Restricted Stock Units 53,610 $0.00 --
Exercise Common Stock 53,610 $0.00 --
Holdings After Transaction: Common Stock — 777,110 shares (Direct, null); Restricted Stock Units — 0 shares (Direct, null)
Footnotes (1)
  1. Each restricted stock unit ("RSU") represents a contingent right to receive one share of common stock. 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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $4.40 to $5.24, 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. 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. Not applicable.
Shares sold 79,309 shares Open-market sale of common stock on July 7, 2026
Weighted average sale price $4.68 per share Common stock sales between $4.40 and $5.24
RSU shares exercised 158,618 shares Common shares received from RSU exercises on July 3 and 5, 2026
Conversion price $0.00 per share RSU-to-common-stock conversion price
Post-transaction holdings 777,110 shares Common stock directly owned after all reported transactions
Price range of sales $4.40–$5.24 per share Range of prices for the July 7, 2026 share sales
restricted stock unit ("RSU") financial
"Each restricted stock unit ("RSU") represents a contingent right to receive one share of common stock."
Rule 10b5-1 trading plan regulatory
"The sales reported in this Form 4 were effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person..."
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
weighted average price financial
"The price reported in Column 4 is a weighted average price."
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
2020 Incentive Plan financial
"The reporting person received a grant of RSUs under the Issuer's 2020 Incentive Plan..."
tax withholding obligations financial
"...to cover estimated tax withholding obligations in connection with the vesting of restricted stock units."
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FAQ

What did EOSE executive Nathan Kroeker report in this Form 4?

Nathan Kroeker reported RSU vesting and a related share sale. He exercised restricted stock units into 158,618 Eos Energy common shares, then sold 79,309 shares in open-market trades under a pre-arranged Rule 10b5-1 trading plan to address estimated tax obligations.

How many EOSE shares did Nathan Kroeker sell and at what price?

Kroeker sold 79,309 Eos Energy common shares. The transactions occurred at a weighted average price of $4.68 per share, with individual trades executed between $4.40 and $5.24, as disclosed in the Form 4 pricing footnote.

Were Nathan Kroeker’s EOSE share sales under a Rule 10b5-1 plan?

Yes, the sales were made under a Rule 10b5-1 trading plan. The plan was adopted on September 15, 2025 and was designed to sell shares automatically to cover estimated tax withholding obligations arising from the vesting of restricted stock units.

How many EOSE shares does Nathan Kroeker own after these transactions?

After the reported transactions, Kroeker directly owns 777,110 Eos Energy shares. This post-transaction holding reflects the combination of RSU conversions into common stock and subsequent open-market sales disclosed in the Form 4.

What RSU activity did Nathan Kroeker report for EOSE?

Kroeker reported exercising a total of 158,618 restricted stock units. Two RSU tranches of 53,610 and 105,008 units converted into an equal number of common shares at a $0.00 conversion price, consistent with grants under the company’s 2020 Incentive Plan.

Does this EOSE Form 4 show any remaining derivative or RSU holdings?

The filing shows the reported RSU awards fully converted to common stock. For the 53,610 and 105,008 unit awards, the derivative positions each show zero units following the conversion, and no additional derivative positions appear in the derivative summary.
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
X
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Kroeker Nathan

(Last)(First)(Middle)
C/O EOS ENERGY ENTERPRISES, INC.
3920 PARK AVENUE

(Street)
EDISON NEW JERSEY 08820

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Eos Energy Enterprises, Inc. [ EOSE ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
CCO and Interim CFO
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
07/03/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock07/03/2026M53,610A$0(1)751,411D
Common Stock07/05/2026M105,008A$0(1)856,419D
Common Stock07/07/2026S(2)79,309D$4.68(3)777,110D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Restricted Stock Units(4)(1)07/03/2026M53,610 (5) (5)Common Stock53,610$00D
Restricted Stock Units(4)(1)07/05/2026M105,008 (5) (5)Common Stock105,008$00D
Explanation of Responses:
1. Each restricted stock unit ("RSU") represents a contingent right to receive one share of common stock.
2. 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.
3. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $4.40 to $5.24, 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.
4. 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.
5. Not applicable.
Remarks:
/s/ Michael Silberman as attorney-in-fact for Nathan Kroeker07/07/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)