Eos Energy Enterprises, Inc.

By person

15 insiders · 41 transactions

2.2×

Joe Mastrangelo holds only 2.2 times base salary in stock. $9.05M of shares against $4.01M in salary for 2025.

Salary from the company's own proxy. The shares are what Joe Mastrangelo last reported holding, valued at $3.92, the price Common Stock was last bought or sold at on the open market here, on 16 Sep 2026.

Insider

Role

Bought

Sold

Net

Holding

Of company

Worth

Change

Stidolph Russell Monoki

Director

—

$11.47M (4)

−$11.47M

2,487,628

0.6831%

$9.75M

−17.9%

Kroeker Nathan

Chief Commercial Officer

—

$1.75M (4) scheduled

−$1.75M

887,527

0.2437%

$3.48M

+425.6%

Walters Marian

Director

—

$1.28M (4) scheduled

−$1.28M

171,634

0.0471%

$672.81K

+63.7%

Mastrangelo Joe

Chief Executive Officer

$502.26K (2)

$1.55M (2) scheduled

−$1.05M

2,308,704

0.6340%

$9.05M

+153.8%

Silberman Michael W

Chief Legal Officer

—

$827.21K (2) scheduled

−$827.21K

298,277

0.0819%

$1.17M

—

Bornstein Jeffrey S

Director

—

$612.54K (2)

−$612.54K

143,806

0.0395%

$563.72K

+54.7%

Puri Sumeet

Chief Accounting Officer

—

$462.31K (4) scheduled

−$462.31K

280,195

0.0769%

$1.10M

+465.5%

Urban David

Director

$100.10K (1)

—

+$100.10K

97,767

0.0268%

$383.25K

—

DIMITRIEF ALEXANDER

Director

$90.60K (1)

—

+$90.60K

280,673

0.0771%

$1.10M

+53.9%

Buczkowski Michelle

Chief Commercial Officer

—

$67.32K (1) scheduled

−$67.32K

61,827

0.0170%

$242.36K

+29.4%

Song Haiyan

Director

$58.70K (2)

—

+$58.70K

15,000

0.0041%

$58.80K

—

Demby Claude

Director

—

157,400

0.0432%

$617.01K

+66.8%

McNeil Jeff

Director

—

122,290

0.0336%

$479.38K

+237.5%

Nigro Joseph

Director

—

41,723

0.0115%

$163.55K

—

Nixon Gregory S.

Director

—

13,867

0.0038%

$54.36K

—

Individual transactions

Insider

Date

Role

Action

Price

Amount

Kroeker Nathan

21 Jul 2026

Chief Commercial Officer

Exercised, kept

16,944

$5.48

$92.85K

Demby Claude

21 Jul 2026

Director

Exercised, kept

1,825

$5.48

$10.00K

Buczkowski Michelle

21 Jul 2026

Chief Administration Officer

Exercised, kept

2,585

$5.48

$14.17K

Nigro Joseph

21 Jul 2026

Director

Exercised, kept

2,773

$5.48

$15.20K

Urban David

21 Jul 2026

Director

Exercised, kept

12,185

$5.48

$66.77K

Bornstein Jeffrey S

21 Jul 2026

Director

Exercised, kept

9,558

$5.48

$52.38K

Walters Marian

21 Jul 2026

Director

Exercised, kept

11,407

$5.48

$62.51K

DIMITRIEF ALEXANDER

21 Jul 2026

Director

Exercised, kept indirect

1,377

$5.48

$7.55K

DIMITRIEF ALEXANDER

21 Jul 2026

Director

Exercised, kept

17,897

$5.48

$98.08K

Mastrangelo Joe

21 Jul 2026

Chief Executive Officer

Exercised, kept

111,118

$5.48

$608.93K

Mastrangelo Joe

12 Jun 2026

Chief Executive Officer

Exercised, kept

200,000

$1.34

$268.00K

DIMITRIEF ALEXANDER

5 Dec 2025

Director

Exercised, kept

18,473

$14.43

$266.57K

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