person · Reporting owner

Stidolph Russell Monoki

Disclosed activity across 2 companies

Tapewire entity: 72071
SEC CIK: 0001833275

Reported relationships

Latest disclosed role at each company.

Company	Last reported as	Report date	Published
AltEnergy Acquisition CorpAEAE · Entity 6968	Director · Chief Executive Officer · 10% owner	December 31, 2024	January 03, 2025
Eos Energy Enterprises, Inc.EOSE · Entity 4901	Director	December 05, 2025	December 09, 2025

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

AltEnergy Acquisition Corp

Report date December 31, 2024 · Filed January 03, 2025

Jointly reported with AltEnergy Acquisition Sponsor LLC

Security / award	Ownership account	Disclosed shares / units	Disclosure context
Private Placement WarrantsSEC Table II · derivative / convertible security	IndirectSee footnote	7,600,000	Reported balance After 2024-12-31 transaction · row 1 Instrument identity requires review; Table II rows are not merged. 1 source row Row 1 · 2024-12-31 · Disposition to issuer · Disposed 4,000,000 · Balance 7,600,000 F1: Each private placement warrant entitles the holder to purchase one share of Class A common stock at a price of $11.50 per share of the issuer, at any time commencing 30 days after the completion of an initial business combination. The holders of such private placement warrants agreed, upon the closing of the issuer's initial business combination, that the private placement warrants and the Class A common stock issuable upon exercise thereof shall be subject to a lock-up restrictions that will terminate with respect to (i) 50% of such shares on the 12 month anniversary of the closing date, (ii) 25% of such shares on the 18 month anniversary of the closing date and (iii) 25% of such shares on the 24 month anniversary of the closing date. F3: On December 31, 2024 AltEnergy Acquisition Sponsor, LLC (the "Sponsor"), forfeited 4,000,000 private placement warrants held of record and beneficially owned by it for no consideration. F2: The warrants will expire five years after completion of an initial business combination, or earlier upon redemption or liquidation in accordance with their terms. F4: The securities reported herein are held of record by the Sponsor. Russell Stidolph, the Chief Executive Officer and a director of the issuer, is the managing member of the Sponsor and has voting and investment discretion with respect to the securities held by the Sponsor. As such, Mr. Stidolph may be deemed to possess beneficial ownership of the securities held directly by the Sponsor. Mr. Stidolph disclaims any beneficial ownership of the reported securities other than to the extent of any pecuniary interest he may have therein, directly or indirectly.

Filing footnotes · ownership attribution and instrument terms

F1: Each private placement warrant entitles the holder to purchase one share of Class A common stock at a price of $11.50 per share of the issuer, at any time commencing 30 days after the completion of an initial business combination. The holders of such private placement warrants agreed, upon the closing of the issuer's initial business combination, that the private placement warrants and the Class A common stock issuable upon exercise thereof shall be subject to a lock-up restrictions that will terminate with respect to (i) 50% of such shares on the 12 month anniversary of the closing date, (ii) 25% of such shares on the 18 month anniversary of the closing date and (iii) 25% of such shares on the 24 month anniversary of the closing date.

F2: The warrants will expire five years after completion of an initial business combination, or earlier upon redemption or liquidation in accordance with their terms.

F3: On December 31, 2024 AltEnergy Acquisition Sponsor, LLC (the "Sponsor"), forfeited 4,000,000 private placement warrants held of record and beneficially owned by it for no consideration.

F4: The securities reported herein are held of record by the Sponsor. Russell Stidolph, the Chief Executive Officer and a director of the issuer, is the managing member of the Sponsor and has voting and investment discretion with respect to the securities held by the Sponsor. As such, Mr. Stidolph may be deemed to possess beneficial ownership of the securities held directly by the Sponsor. Mr. Stidolph disclaims any beneficial ownership of the reported securities other than to the extent of any pecuniary interest he may have therein, directly or indirectly.

Eos Energy Enterprises, Inc.

Report date December 05, 2025 · Filed December 09, 2025

Security / award	Ownership account	Disclosed shares / units	Disclosure context
Common StockSEC Table I · non-derivative	IndirectSee footnote	2,153,272	Reported balance After 2025-12-05 transaction · row 1 Account identity is unresolved; indirect or unspecified ownership is not merged. 1 source row Row 1 · 2025-12-05 · Sale · Disposed 500,000 · Balance 2,153,272 F1: The shares reported in this Form 4 are shares of common stock in which Mr. Stidolph has a pecuniary interest in that are held directly by AltEnergy, LLC or AltEnergy Transmission, LLC. Mr. Stidolph is the managing director of AltEnergy, LLC and the managing member of AltEnergy Transmission, LLC and has voting and dispositive power with respect to the securities owned by AltEnergy, LLC and AltEnergy Transmission, LLC. Each of the Filing Persons disclaims beneficial ownership of the outstanding shares of common stock of the issuer reported herein except to the extent of its pecuniary interest therein.
Common StockSEC Table I · non-derivative	IndirectSee footnote	2,123,273	Reported balance After 2025-12-08 transaction · row 2 Account identity is unresolved; indirect or unspecified ownership is not merged. 1 source row Row 2 · 2025-12-08 · Sale · Disposed 29,999 · Balance 2,123,273 F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $15.28 to $15.45, 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. F1: The shares reported in this Form 4 are shares of common stock in which Mr. Stidolph has a pecuniary interest in that are held directly by AltEnergy, LLC or AltEnergy Transmission, LLC. Mr. Stidolph is the managing director of AltEnergy, LLC and the managing member of AltEnergy Transmission, LLC and has voting and dispositive power with respect to the securities owned by AltEnergy, LLC and AltEnergy Transmission, LLC. Each of the Filing Persons disclaims beneficial ownership of the outstanding shares of common stock of the issuer reported herein except to the extent of its pecuniary interest therein.
Common StockSEC Table I · non-derivative	IndirectSee footnote	2,048,273	Reported balance After 2025-12-05 transaction · row 3 Account identity is unresolved; indirect or unspecified ownership is not merged. 1 source row Row 3 · 2025-12-05 · Other · Disposed 75,000 · Balance 2,048,273 F3: Represents the receipt, for no consideration, of an aggregate of 75,000 shares of Common Stock of the Issuer by AltEnergy pursuant to pro rata distribution by AltEnergy. F1: The shares reported in this Form 4 are shares of common stock in which Mr. Stidolph has a pecuniary interest in that are held directly by AltEnergy, LLC or AltEnergy Transmission, LLC. Mr. Stidolph is the managing director of AltEnergy, LLC and the managing member of AltEnergy Transmission, LLC and has voting and dispositive power with respect to the securities owned by AltEnergy, LLC and AltEnergy Transmission, LLC. Each of the Filing Persons disclaims beneficial ownership of the outstanding shares of common stock of the issuer reported herein except to the extent of its pecuniary interest therein.
Common StockSEC Table I · non-derivative	Direct	364,355	Ending reported balance After 2025-12-08 transaction · row 14 11 source rows · reconciled sequence Row 4 · 2025-12-05 · Other · Acquired 75,000 · Balance 439,355 F3: Represents the receipt, for no consideration, of an aggregate of 75,000 shares of Common Stock of the Issuer by AltEnergy pursuant to pro rata distribution by AltEnergy. Row 5 · 2025-12-05 · Gift · Disposed 60,000 · Balance 379,355 F4: Represents a charitable donation by the reporting person. Row 6 · 2025-12-05 · Gift · Disposed 15,000 · Balance 364,355 F5: Reflects the donation of common stock to a charitable donor advised fund. Row 7 · 2025-12-08 · Exercise / conversion · Acquired 30,788 · Balance 395,143 Row 8 · 2025-12-08 · Tax withholding · Disposed 30,020 · Balance 365,123 Row 9 · 2025-12-08 · Sale · Disposed 768 · Balance 364,355 Row 10 · 2025-12-08 · Exercise / conversion · Acquired 145,018 · Balance 509,373 Row 11 · 2025-12-08 · Exercise / conversion · Acquired 120,633 · Balance 630,006 Row 12 · 2025-12-08 · Tax withholding · Disposed 18,793 · Balance 611,213 F6: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions pursuant to a Cashless exercise / same-day sale at prices ranging from $14.68 to $15.16, 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. Row 13 · 2025-12-08 · Tax withholding · Disposed 11,491 · Balance 599,722 F6: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions pursuant to a Cashless exercise / same-day sale at prices ranging from $14.68 to $15.16, 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. Row 14 · 2025-12-08 · Sale · Disposed 235,367 · Balance 364,355 F6: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions pursuant to a Cashless exercise / same-day sale at prices ranging from $14.68 to $15.16, 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.
Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $14.43 · Expires 2025-12-08	Direct	0	Reported balance After 2025-12-08 transaction · row 15 Instrument identity requires review; Table II rows are not merged. 1 source row Row 15 · 2025-12-08 · Exercise / conversion · Disposed 30,788 · Balance 0 F7: On December 8, 2020 the reporting person was granted stock options to purchase 30,788 shares of common stock which vested on June 15, 2021.
Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $1.18 · Expires 2027-05-19	Direct	0	Reported balance After 2025-12-08 transaction · row 16 Instrument identity requires review; Table II rows are not merged. 1 source row Row 16 · 2025-12-08 · Exercise / conversion · Disposed 145,018 · Balance 0 F8: On May 19, 2022 the reporting person was granted stock options to purchase 145,018 shares of common stock which vested on May 19, 2023.
Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $2.32 · Expires 2028-05-18	Direct	0	Reported balance After 2025-12-08 transaction · row 17 Instrument identity requires review; Table II rows are not merged. 1 source row Row 17 · 2025-12-08 · Exercise / conversion · Disposed 120,633 · Balance 0 F9: On May 18, 2023 the reporting person was granted stock options to purchase 120,633 shares of common stock which vested on April 30, 2024.

Filing footnotes · ownership attribution and instrument terms

F1: The shares reported in this Form 4 are shares of common stock in which Mr. Stidolph has a pecuniary interest in that are held directly by AltEnergy, LLC or AltEnergy Transmission, LLC. Mr. Stidolph is the managing director of AltEnergy, LLC and the managing member of AltEnergy Transmission, LLC and has voting and dispositive power with respect to the securities owned by AltEnergy, LLC and AltEnergy Transmission, LLC. Each of the Filing Persons disclaims beneficial ownership of the outstanding shares of common stock of the issuer reported herein except to the extent of its pecuniary interest therein.

F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $15.28 to $15.45, 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: Represents the receipt, for no consideration, of an aggregate of 75,000 shares of Common Stock of the Issuer by AltEnergy pursuant to pro rata distribution by AltEnergy.

F4: Represents a charitable donation by the reporting person.

F5: Reflects the donation of common stock to a charitable donor advised fund.

F6: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions pursuant to a Cashless exercise / same-day sale at prices ranging from $14.68 to $15.16, 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.

F7: On December 8, 2020 the reporting person was granted stock options to purchase 30,788 shares of common stock which vested on June 15, 2021.

F8: On May 19, 2022 the reporting person was granted stock options to purchase 145,018 shares of common stock which vested on May 19, 2023.

F9: On May 18, 2023 the reporting person was granted stock options to purchase 120,633 shares of common stock which vested on April 30, 2024.

Transaction history

JSON API

Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction date	Company	Activity / security	Shares / units	Reported price	Reported value	Details
June 17, 2021 Filed Sep 8, 2021 23:35 UTC	Eos Energy Enterprises, Inc. EOSE · Entity 4901	GrantRestricted Stock Units · Derivative	3,762	$0.00	$0.00	Disclosure SEC source: 0001628280-21-018276 · wf-form4_163114409615214.xml · derivative · entry 4 Stidolph Russell Monoki · CIK 0001833275 · Director · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 3,762 Underlying: Common Stock · 3,762 shares Expires not disclosed F5 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of common stock F6 · derivative.exercise_date: The reporting person received restricted stock units which vest on the earlier of (i) the first anniversary of the grant date, and (ii) immediately prior to the date of the next annual shareholders meeting of the Company following the grant date; provided, that, the restricted stock units shall vest in full upon the consummation of a change in control. F4 · derivative.expiration_date: Not applicable. Read SEC document
June 15, 2021 Filed Sep 8, 2021 23:35 UTC	Eos Energy Enterprises, Inc. EOSE · Entity 4901	Exercise / conversionRestricted Stock Units · Derivative	5,198	$0.00 Strike: $0.00	$0.00	Disclosure SEC source: 0001628280-21-018276 · wf-form4_163114409615214.xml · derivative · entry 3 Stidolph Russell Monoki · CIK 0001833275 · Director · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 5,198 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F4 · derivative.expiration_date: Not applicable. Read SEC document
June 15, 2021 Filed Sep 8, 2021 23:35 UTC	Eos Energy Enterprises, Inc. EOSE · Entity 4901	Exercise / conversionCommon Stock	5,198	$0.00	$0.00	Disclosure SEC source: 0001628280-21-018276 · wf-form4_163114409615214.xml · nonDerivative · entry 1 Stidolph Russell Monoki · CIK 0001833275 · Director · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 5,198 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · shares: Restricted stock units vested F2 · price: Convert without cost to shares of common stock on a one-for-one basis. Read SEC document
March 02, 2021 Filed Mar 4, 2021 14:17 UTC	Eos Energy Enterprises, Inc. EOSE · Entity 4901	OtherCommon Stock	92,375	$0.00	$0.00	Disclosure SEC source: 0001628280-21-003915 · wf-form4_161488543587751.xml · nonDerivative · entry 1 Stidolph Russell Monoki · CIK 0001833275 · Director · 10% owner AltEnergy, LLC · CIK 0001833898 · 10% owner AltEnergy Storage II LLC · CIK 0001833882 · 10% owner AltEnergy Storage V LLC · CIK 0001833884 · 10% owner AltEnergy Storage VI LLC · CIK 0001833881 · 10% owner AltEnergy Storage Bridge LLC · CIK 0001833879 · 10% owner AltEnergy Transmission LLC · CIK 0001833880 · 10% owner AltEnergy Storage Bridge Phase II LLC · CIK 0001833885 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · See footnotes Disclosed balance after: 7,135,109 F1 · kind: AltEnergy Storage Bridge Phase II, LLC and AltEnergy Storage Bridge, LLC made pro rata distributions for no consideration of an aggregate of 92,375 shares of Common Stock of the Issuer to their respective members on March 2, 2021. F2 · ownership.nature: In addition to Russell Stidolph, a natural person ("Mr. Stidolph"), this Form 4 is being filed jointly by AltEnergy LLC, a Delaware limited liability company ("AltEnergy"); (ii) AltEnergy Storage LLC, a Delaware limited liability company ("AltEnergy I"); (iii) AltEnergy Storage II LLC, a Delaware limited liability company ("AltEnergy II"); (iv) AltEnergy Storage V LLC, a Delaware limited liability company ("AltEnergy V"); (v) AltEnergy VI LLC, a Delaware limited liability company ("AltEnergy VI"); AltEnergy Storage Bridge LLC, a Delaware limited liability company ("Bridge"); AltEnergy Transmission LLC, a Delaware limited liability company ("Transmission"); AltEnergy Storage Bridge Phase II LLC ("Bridge II" and collectively, the "Filing Persons"). F3 · ownership.nature: The shares reported in this Form 4 are shares of common stock in which Mr. Stidoloph has a pecuniary interest in that are held directly byAltEnergy I, AltEnergy II, AltEnergy V, AltEnergy VI, Bridge, Transmission or Bridge II. Mr. Stidolph is the managing director of AltEnergy, the managing member of each of AltEnergy I, AltEnergy II, AltEnergy V, AltEnergy VI, Bridge, Transmission and Bridge II, and has voting and dispositive power with respect to the securities owned by AltEnergy I, AltEnergy II, AltEnergy V, AltEnergy VI, Bridge, Transmission and Bridge II. Each of the Filing Persons disclaims beneficial ownership of the outstanding shares of common stock of the issuer reported herein except to the extent of its pecuniary interest therein. Read SEC document
February 11, 2021 Filed Feb 16, 2021 19:04 UTC	Eos Energy Enterprises, Inc. EOSE · Entity 4901	GrantCommon Stock	449,559	Not disclosed	Not disclosed	Disclosure SEC source: 0001213900-21-009789 · ownership.xml · nonDerivative · entry 1 Stidolph Russell Monoki · CIK 0001833275 · Director · 10% owner AltEnergy, LLC · CIK 0001833898 · 10% owner AltEnergy Storage II LLC · CIK 0001833882 · 10% owner AltEnergy Storage V LLC · CIK 0001833884 · 10% owner AltEnergy Storage VI LLC · CIK 0001833881 · 10% owner AltEnergy Storage Bridge LLC · CIK 0001833879 · 10% owner AltEnergy Transmission LLC · CIK 0001833880 · 10% owner AltEnergy Storage Bridge Phase II LLC · CIK 0001833885 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · See footnotes Disclosed balance after: 7,227,484 F1 · price: The 449,559 shares of common stock of the issuer reported on this Form 4 were distributed to the reporting persons as earnout consideration pursuant that certain agreement and plan of merger, dated September 7, 2020, by and among the issuer and the other parties signatory thereto. The earnout consideration was contingent upon the price per share of the issuer's common stock exceeding certain thresholds, which thresholds were achieved as of January 21, 2021. The issuer informed the reporting persons of the number of shares issuable pursuant to the earnout as of February 11, 2021. F2 · ownership.nature: In addition to Russell Stidolph, a natural person ("Mr. Stidolph"), this Form 4 is being filed jointly by AltEnergy LLC, a Delaware limited liability company ("AltEnergy"); (ii) AltEnergy Storage LLC, a Delaware limited liability company ("AltEnergy I"); (iii) AltEnergy Storage II LLC, a Delaware limited liability company ("AltEnergy II"); (iv) AltEnergy Storage V LLC, a Delaware limited liability company ("AltEnergy V"); (v) AltEnergy VI LLC, a Delaware limited liability company ("AltEnergy VI"); AltEnergy Storage Bridge LLC, a Delaware limited liability company ("Bridge"); AltEnergy Transmission LLC, a Delaware limited liability company ("Transmission"); AltEnergy Storage Bridge Phase II LLC ("Bridge II" and collectively, the "Filing Persons"). F3 · ownership.nature: The shares reported in this Form 4 are shares of common stock in which Mr. Stidoloph has a pecuniary interest in that are held directly by AltEnergy I, AltEnergy II, AltEnergy V, AltEnergy VI, Bridge, Transmission or Bridge II. Mr. Stidolph is the managing director of AltEnergy, the managing member of each of AltEnergy I, AltEnergy II, AltEnergy V, AltEnergy VI, Bridge, Transmission and Bridge II, and has voting and dispositive power with respect to the securities owned by AltEnergy I, AltEnergy II, AltEnergy V, AltEnergy VI, Bridge, Transmission and Bridge II. Each of the Filing Persons disclaims beneficial ownership of the outstanding shares of common stock of the issuer reported herein except to the extent of its pecuniary interest therein. Read SEC document
December 08, 2020 Filed Dec 11, 2020 02:56 UTC	Eos Energy Enterprises, Inc. EOSE · Entity 4901	GrantStock Option (Right to Buy) · Derivative	30,788	$0.00 Strike: $14.43	$0.00	Disclosure SEC source: 0001213900-20-042136 · ownership.xml · derivative · entry 2 Stidolph Russell Monoki · CIK 0001833275 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 30,788 Underlying: Common Stock · 30,788 shares Expires 2025-12-08 F4 · derivative.exercise_date: The reporting person was granted an option to purchase Common Stock which vests on the earlier of (i) the first anniversary of the Grant Date, and (ii) immediately prior to the date of the next annual shareholders meeting of the Company following the Grant Date; provided, that, the option shall vest in full upon the consummation of a Change in Control. Read SEC document
December 08, 2020 Filed Dec 11, 2020 02:56 UTC	Eos Energy Enterprises, Inc. EOSE · Entity 4901	GrantRestricted Stock Units · Derivative	5,198	$0.00	$0.00	Disclosure SEC source: 0001213900-20-042136 · ownership.xml · derivative · entry 1 Stidolph Russell Monoki · CIK 0001833275 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 5,198 Underlying: Common Stock · 5,198 shares Expires not disclosed F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock F2 · derivative.exercise_date: The reporting person received restricted stock units which vest on the earlier of (i) the first anniversary of the Grant Date, and (ii) immediately prior to the date of the next annual shareholders meeting of the Company following the Grant Date; provided, that, the Restricted Stock Units shall vest in full upon the consummation of a Change in Control. F3 · derivative.expiration_date: Not applicable. Read SEC document

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.