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EOSE

Eos Energy Enterprises (EOSE) stock: insider trades, news & valuation

Industrials · Strong buying
Close · Oct 9, 2026 $2.52 -8.9% on the day -82.8% over 12 months 52-week range $2.52 – $19.19

Share price and insider trades

EOSE closeInsider buyInsider sale
05101520NovDecJan 2026FebMarAprMayJunJulAugSepOctBought $19,200 on 2026-09-14 · Haiyan SongBought $39,500 on 2026-09-11 · Haiyan SongSold $54,305 on 2026-05-19 · Marian WaltersBought $100,100 on 2026-03-09 · David UrbanSold $141,110 on 2026-09-09 · Sumeet PuriBought $157,262 on 2026-03-04 · Joe MastrangeloSold $160,697 on 2026-05-20 · Marian WaltersSold $275,400 on 2026-05-28 · Marian WaltersSold $371,166 on 2026-07-07 · Nathan KroekerSold $413,858 on 2026-06-30 · Michael W Silberman, Michelle Buczkowski, Nathan Kroeker, Sumeet PuriBought $435,600 on 2026-03-02 · Alexander Dimitrief, Joe MastrangeloSold $469,002 on 2026-07-28 · Nathan Kroeker, Sumeet PuriSold $574,546 on 2026-07-27 · Joe MastrangeloSold $739,173 on 2026-01-23 · Michael W SilbermanSold $802,000 on 2026-01-26 · Nathan KroekerSold $916,500 on 2025-12-04 · Jeffrey S Bornstein, Marian WaltersSold $1,151,500 on 2026-09-16 · Joe Mastrangelo, Sumeet PuriSold $3,976,766 on 2025-12-08 · Russell Monoki StidolphSold $7,981,536 on 2025-12-05 · Jeffrey S Bornstein, Russell Monoki Stidolph
Bought, 12 months$752K
Sold, 12 months$18.0M
Insiders buying4
Insiders selling8

Eos Energy Enterprises insider trading at a glance (Oct 9, 2026): in the past 12 months, 4 insiders bought $752K and 8 sold $18.0M of EOSE stock on the open market, including a cluster buy that began Mar 2, 2026.

EOSE insider buying and selling by quarter

Open-market purchases (green, above the line) and sales (red, below), by trade date.

Q4 2025: $12.9M sold (7 trades)Q4 2025Q1 2026: $693K bought (4 trades)$693KQ1 2026: $1.5M sold (2 trades)Q1 2026Q2 2026: $904K sold (7 trades)Q2 2026Q3 2026: $59K bought (2 trades)$59KQ3 2026: $2.7M sold (7 trades)Q3 2026Q4 2026
QuarterBoughtPurchasesSoldSales
Q4 2026—0—0
Q3 2026$59K2$2.7M7
Q2 2026—0$904K7
Q1 2026$693K4$1.5M2
Q4 2025—0$12.9M7

Valuation, profit and volume

Pick score 37/100
P/E (trailing)n/aSector median 26.6
Market value$911MElectrical Equipment & Parts
Profit margin-246.8%Revenue growth +351.4%
Volume vs. 50-day1.1×Last 5 sessions
Insiders' paper profit−$424KOn all tracked purchases -56.4%

Summary

Over the past 12 months, 4 Eos Energy Enterprises, Inc. insiders reported open-market purchases totaling $752K, while 8 insiders reported sales totaling $18.0M. The most recent cluster buy began on Mar 2, 2026, when 3 insiders bought a combined $693K. Among insiders with enough purchase history to measure, Joe Mastrangelo (CEO) has the highest Insider Score at 83. 12 of 23 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.

EOSE stock news and SEC filings

Recent 8-K filings and headlines. Tone is scored from the headline wording; “Policy” marks regulatory, trade or government topics.

Insider transactions

Open-market purchases and sales.

Filed Insider Type Shares Price Value Since Score
Sep 16SEC Joe MastrangeloCEO Sell Plan 250,0002,308,704 held (−10%) $3.92 $980K -35.7% 83
Sep 16SEC Sumeet PuriChief Accounting Officer Sell Plan 43,750280,195 held (−14%) $3.92 $172K -35.7% —
Sep 15SEC Haiyan SongDirector Buy 10,000new position $3.95 $40K -36.2% —
Sep 15SEC Haiyan SongDirector Buy 5,00015,000 held (+50%) $3.84 $19K -34.4% —
Sep 9SEC Sumeet PuriChief Accounting Officer Sell Plan 34,167236,445 held (−13%) $4.13 $141K -39.0% —
Jul 28SEC Joe MastrangeloCEO Sell 159,1541,947,586 held (−8%) $3.61 $575K -30.2% 83
Jul 28SEC Nathan KroekerChief Commercial Officer Sell Plan 110,417887,527 held (−11%) $3.36 $371K -25.0% —
Jul 28SEC Sumeet PuriChief Accounting Officer Sell Plan 29,167202,279 held (−13%) $3.36 $98K -25.0% —
Jul 7SEC Nathan KroekerCFO Sell Plan 79,309777,110 held (−9%) $4.68 $371K -46.2% —
Jun 30SEC Nathan KroekerCFO Sell Plan 35,289697,801 held (−5%) $5.86 $207K -57.0% —
Jun 30SEC Michael W SilbermanGeneral Counsel Sell Plan 14,998298,277 held (−5%) $5.87 $88K -57.1% —
Jun 30SEC Michelle BuczkowskiChief Administration Officer Sell Plan 11,46959,242 held (−16%) $5.87 $67K -57.1% —
Jun 30SEC Sumeet PuriChief Accounting Officer Sell Plan 8,823173,112 held (−5%) $5.86 $52K -57.0% —
May 29SEC Marian WaltersDirector Sell 30,000158,445 held (−16%) $9.18 $275K -72.5% —
May 22SEC Marian WaltersDirector Sell 22,319158,445 held (−12%) $7.20 $161K -65.0% —
May 19SEC Marian WaltersDirector Sell 7,681135,334 held (−5%) $7.07 $54K -64.4% —
Mar 10SEC David UrbanDirector Buy 16,25062,471 held (+35%) $6.16 $100K -59.1% —
Mar 5SEC Joe MastrangeloCEO Buy 23,9001,487,126 held (+2%) $6.58 $157K -61.7% 83
Mar 4SEC Alexander DimitriefDirector Buy 15,000235,221 held (+7%) $6.04 $91K -58.3% —
Mar 3SEC Joe MastrangeloCEO Buy 60,0001,463,226 held (+4%) $5.75 $345K -56.2% 83
Jan 26SEC Nathan KroekerCFO Sell Plan 50,000662,512 held (−7%) $16.04 $802K -84.3% —
Jan 23SEC Michael W SilbermanGeneral Counsel Sell Plan 41,667283,279 held (−13%) $17.74 $739K -85.8% —
Dec 8SEC Russell Monoki StidolphDirector Sell 500,0002,153,272 held (−19%) $14.99 $7.5M -83.2% —
Dec 8SEC Russell Monoki StidolphDirector Sell 235,367364,355 held (−39%) $14.89 $3.5M -83.1% —
Dec 8SEC Marian WaltersDirector Sell 50,000135,334 held (−27%) $15.81 $790K -84.1% —
Dec 8SEC Jeffrey S BornsteinDirector Sell 32,328115,759 held (−22%) $15.05 $487K -83.3% —
Dec 8SEC Russell Monoki StidolphDirector Sell 29,9992,123,273 held (−1%) $15.36 $461K -83.6% —
Dec 8SEC Jeffrey S BornsteinDirector Sell 8,000 $15.75 $126K -84.0% —
Dec 8SEC Russell Monoki StidolphDirector Sell 768364,355 held (−0%) $14.80 $11K -83.0% —

Insiders at Eos Energy Enterprises, Inc.

InsiderBoughtSoldLast filingScore
Russell Monoki StidolphDirector — $11.5M Dec 8, 2025 —
Joe MastrangeloCEO $502K $1.6M Sep 16, 2026 83
Nathan KroekerChief Commercial Officer — $1.8M Jul 28, 2026 —
Marian WaltersDirector — $1.3M May 29, 2026 —
Michael W SilbermanGeneral Counsel — $827K Jun 30, 2026 —
Jeffrey S BornsteinDirector — $613K Dec 8, 2025 —
Sumeet PuriChief Accounting Officer — $462K Sep 16, 2026 —
David UrbanDirector $100K — Mar 10, 2026 —
Alexander DimitriefDirector $91K — Mar 4, 2026 —
Haiyan SongDirector $59K — Sep 15, 2026 —
Michelle BuczkowskiChief Administration Officer — $67K Jun 30, 2026 —

Insider activity at other Industrials companies

Same sector, ranked by insider buying in the last 90 days.

  • RSGRepublic Services$1.38B bought
  • MAIRMadison Air Solutions Corp$220M bought
  • UUUUNIVERSAL SAFETY PRODUCTS, INC.$93.2M bought
  • PAMTPAMT CORP$31.2M bought
  • PAMPampa Energy Inc.$16.4M bought
  • UBERUber$15.3M bought

EOSE stock: common questions

Are Eos Energy Enterprises, Inc. insiders buying EOSE stock?

In the past 12 months, 4 insiders reported open-market purchases of EOSE worth $752K. The latest was Director Haiyan Song bought $40K of EOSE at $3.95 — first open-market purchase in our records; opens a new position.

Are Eos Energy Enterprises, Inc. insiders selling EOSE stock?

8 insiders reported sales worth $18.0M over the same period.

Where does this data come from?

Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.

What is EOSE's 52-week range?

Over the past year EOSE has traded between $2.52 and $19.19. It last closed at $2.52 on Oct 9, 2026.