Eos Energy Enterprises, Inc. (EOSE) · Insider trading

What Eos Energy Enterprises's directors, officers and largest holders bought and sold themselves, from the Form 4 each of them files with the SEC within two business days of a trade. Open-market purchases and sales first: those are the trades somebody chose to make at the market price.

Bought, 12 months

$751,662

4 insiders, 6 trades

Sold, 12 months

$18.03M

8 insiders, 23% under a plan

Net, 12 months

−$17.28M

bought less sold

Latest filing

2026-09-16

filings read to 2026-10-19

Bought and sold at the market, by month

Two years. Purchases above the line, sales below, in dollars.

Bought Sold Largest month: $12.87M

Who traded, two years

Insider	Bought	Sold	Trades	Last trade	Holds after
Stidolph Russell MonokiDirector	–	$11.47M	4	2025-12-08	–
Mastrangelo JoeDirector, Chief Executive Officer	$502,262	$5.02M	7	2026-09-16	2,308,704
Kroeker NathanChief Commercial Officer	–	$3.75M	8	2026-07-28	887,527
Silberman Michael WChief Legal Officer	–	$1.91M	4	2026-06-30	298,277
Walters MarianDirector	–	$1.68M	5	2026-05-28	158,445
Puri SumeetChief Accounting Officer	–	$1.10M	8	2026-09-16	280,195
Bornstein Jeffrey SDirector	–	$612,536	2	2025-12-05	115,759
Dimitrief AlexanderDirector	$90,600	$270,000	2	2026-03-02	235,221
Urban DavidDirector	$100,100	–	1	2026-03-09	62,471
Buczkowski MichelleChief Administration Officer	–	$67,323	1	2026-06-30	59,242
Song HaiyanDirector	$58,700	–	2	2026-09-14	15,000

Open-market purchases and sales

Newest first. “Plan” marks a trade made under a 10b5-1 plan set up in advance.

Date	Insider	Trade	Shares	Price	Value	Holds after	Filing
2026-09-16	Mastrangelo JoeDirector, Chief Executive Officer	Saleplan	250,000	3.92	$980,000	2,308,704	Form 4
2026-09-16	Puri SumeetChief Accounting Officer	Saleplan	43,750	3.92	$171,500	280,195	Form 4
2026-09-14	Song HaiyanDirector	Buy	5,000	3.84	$19,200	15,000	Form 4
2026-09-11	Song HaiyanDirector	Buy	10,000	3.95	$39,500	10,000	Form 4
2026-09-09	Puri SumeetChief Accounting Officer	Saleplan	34,167	4.13	$141,110	236,445	Form 4
2026-07-28	Kroeker NathanChief Commercial Officer	Saleplan	110,417	3.36	$371,001	887,527	Form 4
2026-07-28	Puri SumeetChief Accounting Officer	Saleplan	29,167	3.36	$98,001	202,279	Form 4
2026-07-27	Mastrangelo JoeDirector, Chief Executive Officer	Sale	159,154	3.61	$574,546	1,947,586	Form 4
2026-07-07	Kroeker NathanCCO and Interim CFO	Saleplan	79,309	4.68	$371,166	777,110	Form 4
2026-06-30	Kroeker NathanCCO and Interim CFO	Saleplan	35,289	5.86	$206,794	697,801	Form 4
2026-06-30	Silberman Michael WChief Legal Officer	Saleplan	14,998	5.87	$88,038	298,277	Form 4
2026-06-30	Buczkowski MichelleChief Administration Officer	Saleplan	11,469	5.87	$67,323	59,242	Form 4
2026-06-30	Puri SumeetChief Accounting Officer	Saleplan	8,823	5.86	$51,703	173,112	Form 4
2026-05-28	Walters MarianDirector	Sale	30,000	9.18	$275,400	158,445	Form 4
2026-05-20	Walters MarianDirector	Sale	22,319	7.20	$160,697	158,445	Form 4
2026-05-19	Walters MarianDirector	Sale	7,681	7.07	$54,305	135,334	Form 4
2026-03-09	Urban DavidDirector	Buy	16,250	6.16	$100,100	62,471	Form 4
2026-03-04	Mastrangelo JoeDirector, Chief Executive Officer	Buy	23,900	6.58	$157,262	1,487,126	Form 4
2026-03-02	Dimitrief AlexanderDirector	Buy	15,000	6.04	$90,600	235,221	Form 4
2026-03-02	Mastrangelo JoeDirector, Chief Executive Officer	Buy	60,000	5.75	$345,000	1,463,226	Form 4
2026-01-26	Kroeker NathanCCO and Interim CFO	Saleplan	50,000	16.04	$802,000	662,512	Form 4
2026-01-23	Silberman Michael WChief Legal Officer	Saleplan	41,667	17.74	$739,173	283,279	Form 4
2025-12-08	Stidolph Russell MonokiDirector	Saleindirect	29,999	15.36	$460,785	2,123,273	Form 4
2025-12-08	Stidolph Russell MonokiDirector	Sale	768	14.80	$11,366	364,355	Form 4
2025-12-08	Stidolph Russell MonokiDirector	Sale	235,367	14.89	$3.50M	364,355	Form 4
2025-12-05	Bornstein Jeffrey SDirector	Sale	32,328	15.05	$486,536	115,759	Form 4
2025-12-05	Stidolph Russell MonokiDirector	Saleindirect	500,000	14.99	$7.50M	2,153,272	Form 4
2025-12-04	Walters MarianDirector	Sale	50,000	15.81	$790,500	135,334	Form 4
2025-12-04	Bornstein Jeffrey SDirector	Saleindirect	8,000	15.75	$126,000	0	Form 4
2025-09-08	Puri SumeetChief Accounting Officer	Saleplan	20,501	6.98	$143,097	184,290	Form 4
2025-09-08	Puri SumeetChief Accounting Officer	Saleplan	20,000	7.25	$145,000	164,290	Form 4
2025-09-03	Walters MarianDirector	Sale	50,000	7.90	$395,000	133,794	Form 4
2025-08-04	Dimitrief AlexanderDirector	Sale	45,000	6.00	$270,000	219,452	Form 4
2025-07-29	Puri SumeetChief Accounting Officer	Saleplan	17,500	5.94	$103,950	136,457	Form 4
2025-07-29	Silberman Michael WGeneral Counsel	Saleplan	65,625	5.94	$389,812	241,612	Form 4
2025-07-29	Kroeker NathanCCO and Interim CFO	Saleplan	99,375	5.94	$590,288	612,512	Form 4
2025-07-29	Mastrangelo JoeDirector, Chief Executive Officer	Saleplan	166,667	5.94	$990,002	1,403,226	Form 4
2025-07-08	Mastrangelo JoeDirector, Chief Executive Officer	Saleplan	127,152	4.92	$625,588	1,236,560	Form 4
2025-07-08	Kroeker NathanCCO and Interim CFO	Saleplan	47,254	4.92	$232,490	491,054	Form 4
2025-07-07	Kroeker NathanCCO and Interim CFO	Saleplan	24,124	5.21	$125,686	538,308	Form 4

4 more

2025-05-16	Puri SumeetChief Accounting Officer	Sale	36,173	6.86	$248,147	95,624	Form 4
2025-05-16	Silberman Michael WGeneral Counsel	Sale	100,943	6.86	$692,469	161,404	Form 4
2025-05-16	Kroeker NathanChief Commercial Officer	Sale	152,856	6.86	$1.05M	403,815	Form 4
2025-05-16	Mastrangelo JoeDirector, Chief Executive Officer	Sale	270,384	6.86	$1.85M	1,109,409	Form 4

Grants, exercises and other transactions

Pay, tax and paperwork rather than a choice to trade at the market price. Two years.

65 × option exercise10 × shares withheld for tax7 × returned to the company3 × gift2 × grant or award2 × other

Show them

Date	Insider	What	Shares	Price	Holds after	Filing
2026-09-14	Mastrangelo JoeDirector, Chief Executive Officer	Grant or award A	+500,000	–	2,558,704	Form 4
2026-09-14	Puri SumeetChief Accounting Officer	Option exercise M	+87,500	–	323,945	Form 4
2026-09-05	Puri SumeetChief Accounting Officer	Option exercise M	+68,333	–	270,612	Form 4
2026-07-25	Mastrangelo JoeDirector, Chief Executive Officer	Option exercise M	+333,334	–	2,106,740	Form 4
2026-07-25	Kroeker NathanChief Commercial Officer	Option exercise M	+220,834	–	997,944	Form 4
2026-07-25	Puri SumeetChief Accounting Officer	Option exercise M	+58,334	–	231,446	Form 4
2026-07-21	Kroeker NathanChief Commercial Officer	Option exercise M	+16,944	5.48	904,471	Form 4
2026-07-21	Demby ClaudeDirector	Option exercise M	+1,825	5.48	157,400	Form 4
2026-07-21	Buczkowski MichelleChief Administration Officer	Option exercise M	+2,585	5.48	61,827	Form 4
2026-07-21	Nigro JosephDirector	Option exercise M	+2,773	5.48	41,723	Form 4
2026-07-21	Urban DavidDirector	Option exercise M	+12,185	5.48	97,767	Form 4
2026-07-21	Bornstein Jeffrey SDirector	Option exercise M	+9,558	5.48	143,806	Form 4
2026-07-21	Walters MarianDirector	Option exercise M	+11,407	5.48	171,634	Form 4
2026-07-21	Dimitrief AlexanderDirector	Option exercise M	+17,897	5.48	269,296	Form 4
2026-07-21	Dimitrief AlexanderDirector	Option exercise M	+1,377	5.48	11,377	Form 4
2026-07-21	Mastrangelo JoeDirector, Chief Executive Officer	Option exercise M	+111,118	5.48	2,058,704	Form 4
2026-07-06	Mastrangelo JoeDirector, Chief Executive Officer	Shares withheld for tax F	−121,245	5.06	1,773,406	Form 4
2026-07-05	Mastrangelo JoeDirector, Chief Executive Officer	Option exercise M	+254,304	–	1,894,651	Form 4
2026-07-05	Kroeker NathanCCO and Interim CFO	Option exercise M	+105,008	–	856,419	Form 4
2026-07-03	Kroeker NathanCCO and Interim CFO	Option exercise M	+53,610	–	751,411	Form 4
2026-06-30	Mastrangelo JoeDirector, Chief Executive Officer	Shares withheld for tax F	−60,703	6.09	1,640,347	Form 4
2026-06-26	Mastrangelo JoeDirector, Chief Executive Officer	Option exercise M	+130,570	–	1,701,050	Form 4
2026-06-26	Kroeker NathanCCO and Interim CFO	Option exercise M	+70,578	–	733,090	Form 4
2026-06-26	Silberman Michael WChief Legal Officer	Option exercise M	+29,996	–	313,275	Form 4
2026-06-26	Buczkowski MichelleChief Administration Officer	Option exercise M	+22,938	–	70,711	Form 4
2026-06-26	Puri SumeetChief Accounting Officer	Option exercise M	+17,645	–	181,935	Form 4
2026-06-12	Mastrangelo JoeDirector, Chief Executive Officer	Option exercise M	+200,000	1.34	1,687,126	Form 4
2026-06-12	Mastrangelo JoeDirector, Chief Executive Officer	Shares withheld for tax F	−116,646	6.06	1,570,480	Form 4
2026-06-02	Walters MarianDirector	Option exercise M	+1,782	–	160,227	Form 4
2026-06-02	Nigro JosephDirector	Option exercise M	+3,565	–	38,950	Form 4
2026-05-28	Walters MarianDirector	Option exercise M	+30,000	1.18	188,445	Form 4
2026-05-20	Walters MarianDirector	Option exercise M	+22,319	1.18	180,764	Form 4
2026-05-19	Urban DavidDirector	Option exercise M	+23,111	–	85,582	Form 4
2026-05-19	Walters MarianDirector	Option exercise M	+7,681	1.18	143,015	Form 4
2026-05-19	Walters MarianDirector	Option exercise M	+23,111	–	158,445	Form 4
2026-05-19	Nixon Gregory S.Director	Grant or award A	+23,111	–	23,111	Form 4
2026-05-19	Nixon Gregory S.Director	Returned to the company D	−9,244	6.88	13,867	Form 4
2026-05-19	Dimitrief AlexanderDirector	Option exercise M	+26,963	–	262,184	Form 4
2026-05-19	Dimitrief AlexanderDirector	Returned to the company D	−10,785	6.88	251,399	Form 4
2026-05-19	Demby ClaudeDirector	Option exercise M	+23,111	–	164,819	Form 4
2026-05-19	Demby ClaudeDirector	Returned to the company D	−9,244	6.88	155,575	Form 4
2026-05-19	Bornstein Jeffrey SDirector	Option exercise M	+30,815	–	146,574	Form 4
2026-05-19	Bornstein Jeffrey SDirector	Returned to the company D	−12,326	6.88	134,248	Form 4
2026-05-19	McNeil JeffDirector	Option exercise M	+23,111	–	122,290	Form 4
2026-01-23	Kroeker NathanCCO and Interim CFO	Option exercise M	+100,000	–	712,512	Form 4
2026-01-22	Silberman Michael WChief Legal Officer	Option exercise M	+83,334	–	324,946	Form 4
2025-12-08	Stidolph Russell MonokiDirector	Option exercise M	+30,788	14.43	395,143	Form 4
2025-12-08	Stidolph Russell MonokiDirector	Shares withheld for tax F	−30,020	14.80	365,123	Form 4
2025-12-08	Stidolph Russell MonokiDirector	Option exercise M	+145,018	1.18	509,373	Form 4
2025-12-08	Stidolph Russell MonokiDirector	Option exercise M	+120,633	2.32	630,006	Form 4
2025-12-08	Stidolph Russell MonokiDirector	Shares withheld for tax F	−18,793	14.89	611,213	Form 4
2025-12-08	Stidolph Russell MonokiDirector	Shares withheld for tax F	−11,491	14.89	599,722	Form 4
2025-12-05	Dimitrief AlexanderDirector	Option exercise M	+18,473	14.43	237,925	Form 4
2025-12-05	Dimitrief AlexanderDirector	Shares withheld for tax F	−17,704	15.03	220,221	Form 4
2025-12-05	Stidolph Russell MonokiDirector	Other J	−75,000	–	2,048,273	Form 4
2025-12-05	Stidolph Russell MonokiDirector	Other J	+75,000	–	439,355	Form 4
2025-12-05	Stidolph Russell MonokiDirector	Gift G	−60,000	–	379,355	Form 4
2025-12-05	Stidolph Russell MonokiDirector	Gift G	−15,000	–	364,355	Form 4
2025-12-04	Walters MarianDirector	Option exercise M	+18,473	14.43	152,267	Form 4
2025-12-04	Walters MarianDirector	Shares withheld for tax F	−16,933	15.75	135,334	Form 4
2025-12-04	Walters MarianDirector	Option exercise M	+50,000	1.18	185,334	Form 4
2025-12-04	McNeil JeffDirector	Gift G	−16,000	–	99,179	Form 4
2025-09-05	Puri SumeetChief Accounting Officer	Option exercise M	+68,334	–	204,791	Form 4
2025-07-25	Puri SumeetChief Accounting Officer	Option exercise M	+58,333	–	153,957	Form 4
2025-07-25	Silberman Michael WGeneral Counsel	Option exercise M	+145,833	–	307,237	Form 4
2025-07-25	Kroeker NathanCCO and Interim CFO	Option exercise M	+220,833	–	711,887	Form 4
2025-07-25	Mastrangelo JoeDirector, Chief Executive Officer	Option exercise M	+333,333	–	1,569,893	Form 4
2025-07-05	Mastrangelo JoeDirector, Chief Executive Officer	Option exercise M	+254,303	–	1,363,712	Form 4
2025-07-05	Kroeker NathanCCO and Interim CFO	Option exercise M	+105,008	–	562,432	Form 4
2025-07-03	Kroeker NathanCCO and Interim CFO	Option exercise M	+53,609	–	457,424	Form 4
2025-05-14	Bornstein Jeffrey SDirector	Option exercise M	+105,263	–	190,192	Form 4
2025-05-14	Bornstein Jeffrey SDirector	Returned to the company D	−42,105	6.94	148,087	Form 4
2025-05-14	Stidolph Russell MonokiDirector	Option exercise M	+105,263	–	406,460	Form 4
2025-05-14	Stidolph Russell MonokiDirector	Returned to the company D	−42,105	6.94	364,355	Form 4
2025-05-14	Demby ClaudeDirector	Option exercise M	+78,947	–	173,287	Form 4
2025-05-14	Demby ClaudeDirector	Returned to the company D	−31,579	6.94	141,708	Form 4
2025-05-14	Dimitrief AlexanderDirector	Option exercise M	+92,105	–	264,452	Form 4
2025-05-14	Urban DavidDirector	Option exercise M	+46,221	–	46,221	Form 4
2025-05-14	Walters MarianDirector	Option exercise M	+78,947	–	183,794	Form 4
2025-05-14	Nigro JosephDirector	Option exercise M	+35,385	–	35,385	Form 4
2025-05-14	McNeil JeffDirector	Option exercise M	+78,947	–	115,179	Form 4
2025-05-08	Puri SumeetChief Accounting Officer	Option exercise M	+82,250	–	131,797	Form 4
2025-05-08	Silberman Michael WGeneral Counsel	Option exercise M	+205,625	–	262,347	Form 4
2025-05-08	Kroeker NathanChief Commercial Officer	Option exercise M	+311,375	–	556,671	Form 4
2025-05-08	Mastrangelo JoeDirector, Chief Executive Officer	Option exercise M	+470,000	–	1,379,793	Form 4
2025-01-23	Kroeker NathanChief Financial Officer	Option exercise M	+100,000	–	285,811	Form 4
2025-01-23	Kroeker NathanChief Financial Officer	Shares withheld for tax F	−40,515	6.19	245,296	Form 4
2025-01-22	Silberman Michael WGeneral Counsel	Option exercise M	+83,333	–	83,333	Form 4
2025-01-22	Silberman Michael WGeneral Counsel	Shares withheld for tax F	−26,611	5.84	56,722	Form 4

How to read it

Buy, sale: Code P and S on the form: shares bought or sold in the market, at the market price. The other codes are mostly pay (a grant, an option exercised) or tax (shares the company withheld), and say little about what the insider thinks of the price.
Plan: A sale or purchase under a Rule 10b5-1 plan, set up in advance and running on its own schedule. Since April 2023 the form has a box for it. Much executive selling is planned and says more about diversifying than about the company.
Holds after: The shares the insider still held after the trade, in the form the trade was in (directly, or indirectly through a trust or a fund).
Value: Shares times the price the form reports, which is often an average over several fills on the day.

Read from the SEC's own quarterly data sets of Forms 3, 4 and 5, and from each day's filings since the last one. A correcting amendment replaces the lines it restates. Every row links to its filing. None of this is advice: insiders sell for many reasons, and buy for fewer.

Eos Energy Enterprises's scores and multiples ›