undamentalytics Newsletter

Eos Energy Enterprises, Inc. insider trading

Every open-market purchase and sale by Eos Energy Enterprises, Inc.'s officers, directors and largest shareholders since November 4, 2021, and what the share price did next.

Insider purchase Insider sale Marker size reflects trade value. Weekly closes adjusted for splits; may be delayed.
Eos Energy Enterprises, Inc. insider open-market trades
DateInsiderTrade SharesPriceValue 1M after 3M after 6M after

From insiders' Form 4 filings with the SEC: open-market purchases and sales only (awards, option exercises and shares withheld for tax are excluded), combined to one line per insider per day. "Plan" marks trades the filing says were made under a pre-set Rule 10b5-1 trading plan, which are scheduled in advance. Price changes run from the close on the trade date; hover a figure for the change relative to the S&P 500. Past moves don't predict future ones.

Does following Eos Energy Enterprises, Inc.’s insiders pay?

From November 6, 2020 to September 15, 2026, 23 insiders reported 26 open-market purchases and 29 sales not made under a pre-set plan in Eos Energy Enterprises, Inc. Twelve months after each purchase was reported, the shares were −52.9% against the S&P 500 on average (median −52.3%), over 3 purchases with a full year of prices; 0% beat the index. After sales, the shares moved −56.0% against the index over 12 months (a negative figure means selling was the right call). That rests on fewer than 20 purchases, too few to read much into. Buying each purchase the day after it was reported, an equal amount each, held 12 months or until that insider reported a sale, would have turned $10,000 on November 18, 2020 into $2,183 by November 2, 2026, −22.6% a year. It held shares 30% of the time; the S&P 500 on those same days, with Treasury bills otherwise, made $17,671 (+10.1% a year), and held throughout $23,021 (+15.1%).

$0$10.0k$20.0k 2020202120222023202420252026 $23.0k$17.7k$2.2k
Copying Eos Energy Enterprises, Inc.'s insidersS&P 500, same days investedS&P 500, held throughout $10,000 copying every open-market purchase by Eos Energy Enterprises, Inc.'s insiders from November 18, 2020, before costs and taxes, marked weekly. Uninvested money earns the Treasury bill rate; the portfolio held shares 30% of the time.
Eos Energy Enterprises, Inc.: each insider's record
InsiderRolePurchases12 months after their purchasesBeat the S&P 500Sales12 months after their salesLatest report
Mastrangelo Joe Chief Executive Officer 8 — — 2 −16.8% (1) July 28, 2026
Walters Marian Director 1 — — 5 −67.1% (1) May 29, 2026
Dimitrief Alexander Director 4 −75.6% (1) 0% 1 −59.3% (1) March 4, 2026
B. Riley Securities, Inc. 10% owner 2 −41.6% (2) 0% 1 −30.8% (1) November 17, 2020
Bornstein Jeffrey S Director 1 — — 2 — December 8, 2025
Brc Group Holdings, Inc. 10% owner 0 — — 3 −74.9% (3) November 16, 2021
Shribman Daniel Other 2 — — 1 — November 10, 2022
Stidolph Russell Monoki Director 2 — — 1 — December 8, 2025
B. Riley Capital Management, LLC 10% owner 0 — — 2 −72.7% (2) October 18, 2021
Demby Claude Director 1 — — 1 — September 8, 2023
Gonzales Randall B Chief Financial Officer 2 — — 0 — May 12, 2022
Riley Bryant R 10% owner 0 — — 2 −74.9% (2) November 19, 2021
B. Riley Principal Investments, LLC 10% owner 0 — — 1 −74.7% (1) August 31, 2021
B. Riley Principal Sponsor Co. II, LLC 10% owner 0 — — 1 −73.7% (1) August 27, 2021
Brc Partners Management Gp, LLC 10% owner 0 — — 1 −25.4% (1) November 6, 2020
Brc Partners Opportunity Fund, LP 10% owner 0 — — 1 −72.6% (1) September 29, 2021
Brf Investments, LLC 10% owner 0 — — 1 −72.8% (1) September 21, 2021
Kroeker Nathan Chief Commercial Officer 0 — — 1 −16.8% (1) May 16, 2025
Puri Sumeet Chief Accounting Officer 0 — — 1 −16.8% (1) May 16, 2025
Silberman Michael W General Counsel 0 — — 1 −16.8% (1) May 16, 2025
Song Haiyan Director 1 — — 0 — September 15, 2026
Tedone John J Chief Accounting Officer 1 — — 0 — March 2, 2022
Urban David Director 1 — — 0 — March 10, 2026

Moves are the shares’ return including dividends minus the S&P 500’s, from the close on the first trading day after each report; the number of trades with a finished 12-month window is in brackets. Green means the trade went the insider’s way (a purchase ahead of the index, a sale followed by the shares trailing it). A trade reported both by a director or officer and by a fund or company they are linked to counts once here, under the person. Purchases count only where the share price actually traded was at least $5. These figures describe what the shares did, not why anyone traded. Insiders across all companies.

When several insiders traded Eos Energy Enterprises, Inc.

Months when 2 or more insiders became net buyers, or 3 or more net sellers, of Eos Energy Enterprises, Inc. in reports dated in the 91 days before the month end, and how the stock did against the S&P 500 from that month end. After 2 selling crowds, −71.3%. One company's history is too short to judge by; the test across every company is the better guide.

MonthCrowd3 months on, vs S&P 5006 months12 months
December 31, 20253 selling−53.1%−66.6%not yet
September 30, 20216 selling−56.5%−76.1%−72.6%

Colours show whether the crowd was right: green when buyers were followed by a rise above the index, or sellers by a fall below it. Total returns from the month end; past patterns are not a forecast.

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