StockData
Eos Energy Enterprises, Inc. logo

Eos Energy Enterprises, Inc. (EOSE) shareholders

EOSENasdaqMiscellaneous Electrical Machinery, Equipment & SuppliesFiscal year ends December 31Also trades as EOSEW
Financials through Q3 FY2026, quarter ended Sep 30, 2026Last filing: 10-Q on Nov 5, 2026Score 6/30
$1.91+0.10 (+5.52%)

Close on Nov 13, 2026Market cap $695.56MP/E –Yield –

Ownership

Institutional holdings as of Jun 30, 2026, from 13F filings

Held by institutions
228M
Shares held, 13F filers
Institutional holders
348
77 new, 43 sold out
Net institutional buying
22M
In Q2 2026
Insider trades, 12 months
7 buys · 24 sales
Net sold $17.33M

Shares held by institutions

Holders of more than 5%

Latest Schedule 13D (active) or 13G (passive) filed by each holder

HolderShares% of classFilingAs of
Cerberus Capital Management II, L.P.
Joint filing with CCM Denali Equity Holdings, LP (32.60%), CCM Denali Equity Holdings GP, LLC (32.60%) and 4 more
175,829,98632.60%13D (active) amendmentAug 4, 2026
CCM Denali Equity Holdings GP, LLC
Joint filing with Cerberus Capital Management II, L.P. (32.00%), CCM Denali Equity Holdings, LP (32.00%)
159,587,65432.00%13D (active) amendmentMay 12, 2026
Sander Gerber
Joint filing with Hudson Bay Capital Management LP (7.75%)
30,568,0097.75%13G (passive)Sep 30, 2026
BlackRock, Inc.25,903,4257.60%13G (passive) amendmentJun 30, 2026
Vanguard Capital Management17,239,5055.07%13G (passive)Mar 31, 2026
Capital Ventures International
Joint filing with Susquehanna Advisors Group, Inc. (5.80%), G1 Execution Services, LLC (5.80%) and 2 more
15,168,9025.80%13G (passive)Jun 30, 2025
Legal & General Group Plc
Joint filing with Legal & General Investment Management Ltd (5.40%), LGIM Managers (Europe) Limited (5.39%) and 1 more
2,899,9615.40%13G (passive) amendmentDec 31, 2021

Top institutional holders

13F holdings as of Jun 30, 2026

HolderShares% of EOSEValueChange% of portfolio
BlackRock, Inc.27,130,305–$159.53M+3,046,5260.00%
Vanguard Capital Management LLC15,021,392–$88.33M+185,9550.00%
Hudson Bay Capital Management LP13,683,634–$80.46MNew0.22%
Driehaus Capital Management LLC13,556,010–$79.71M−1,313,1600.46%
Two Sigma Investments, LP12,783,883–$75.17M−1,290,1180.05%
State Street Corp10,154,935–$59.71M+2,137,0050.00%
Susquehanna International Group, Llp9,683,190–$56.94M+3,332,7090.00%
Geode Capital Management, LLC8,894,922–$52.31M+1,082,0280.00%
Electron Capital Partners, LLC6,681,859–$39.29M+1,302,1981.57%
Morgan Stanley5,313,829–$31.25M+2,353,0450.00%
Stifel Financial Corp4,418,639–$25.98M+280,0840.02%
Crystal Cove Asset Management, LLC4,285,181–$25.20M−13,30627.49%
UBS Group AG3,908,447–$22.98M+2,010,9740.00%
Legal & General Group Plc3,899,815–$22.93M+2,854,1160.00%
Graham Capital Management, L.P.3,566,446–$20.97MNew0.38%
Citadel Advisors LLC3,310,130–$19.46M−2,790,6420.00%
Vanguard Portfolio Management LLC3,289,703–$19.34M+446,8950.00%
Northern Trust Corp2,906,986–$17.09M+417,0410.00%
Charles Schwab Investment Management Inc2,831,969–$16.65M+200,8980.00%
BNP PARIBAS ASSET MANAGEMENT Holding S.A.2,573,001–$15.13M+1,204,5000.02%

Institutional buying and selling by quarter

Positions opened, added to, reduced and closed by 13F filers

QuarterHoldersShares heldNew / addedReduced / closedShares boughtShares sold
Q2 2026348228M77 / 135102 / 4364M41M
Q1 2026318206M75 / 13777 / 7282M33M
Q4 2025322176M97 / 12385 / 4556M34M
Q3 2025276154M91 / 8765 / 2946M26M
Q2 2025215133M73 / 8635 / 3460M16M
Q1 202517789M47 / 6140 / 2418M9M
Q4 202415580M53 / 4529 / 2330M9M
Q3 202412659M39 / 2830 / 3918M16M
Q2 202412759M30 / 4229 / 3617M42M
Q1 202413385M20 / 4443 / 218M19M
Q4 202313596M25 / 5631 / 2638M11M
Q3 202313668M32 / 4138 / 1512M11M

Top mutual fund and ETF holders

Latest monthly portfolio reports (Form N-PORT)

167 funds held EOSE in Q2 2026, 66% of their shares through ETFs. Each fund counts once per quarter, from its quarter-end report.

FundShares% of EOSEValue% of fundAs of
Vanguard Total Stock Market Index Fund10,773,248–$63.35M0.00%Jun 30, 2026
iShares Russell 2000 ETF8,955,818–$52.66M0.06%Jun 30, 2026
Vanguard Extended Market Index Fund3,897,114–$22.92M0.02%Jun 30, 2026
Fidelity Small Cap Index Fund3,767,320–$12.73M0.04%Jul 31, 2026
iShares Russell 2000 Growth ETF3,156,406–$18.56M0.12%Jun 30, 2026
Bridge Builder Small/Mid Cap Growth Fund2,535,193–$14.91M0.13%Jun 30, 2026
Fidelity Extended Market Index Fund1,677,427–$14.14M0.03%May 31, 2026
Vanguard Russell 2000 Index Fund1,586,319–$13.37M0.08%May 31, 2026
Schwab U.S. Small-Cap ETF1,554,793–$13.11M0.06%May 31, 2026
Driehaus Small Cap Growth Fund1,407,970–$8.28M0.51%Jun 30, 2026
Janus Henderson Small/Mid Cap Growth Alpha ETF1,159,917–$3.92M0.37%Jul 31, 2026
State Street(R) SPDR(R) S&P Kensho Clean Power ETF1,043,027–$6.13M2.46%Jun 30, 2026
State Street(R) SPDR(R) S&P Kensho New Economies Composite ETF963,405–$5.66M0.20%Jun 30, 2026
Invesco WilderHill Clean Energy ETF958,242–$3.24M0.77%Jul 31, 2026
First Trust NASDAQ Clean Edge Green Energy Index Fund840,909–$4.94M0.59%Jun 30, 2026

Officers, directors and major owners

People who filed Forms 3, 4 or 5 in the last two years

NameRoleShares ownedLatest filing
Joe MastrangeloChief Executive Officer, Director2,308,704Sep 16, 2026
Michelle BuczkowskiChief Commercial Officer111,827Oct 29, 2026
Sumeet PuriChief Accounting Officer280,195Sep 16, 2026
Alessandro LagiChief Financial Officer12,114Aug 26, 2026
Nathan KroekerChief Commercial Officer904,471Aug 6, 2026
Marie Batz MartinChief Legal Officer–Jul 15, 2026
Michael W. SilbermanChief Legal Officer298,277Jun 30, 2026
Eric M. JavidiChief Financial Officer–Mar 19, 2025
Alexander DimitriefDirector305,673Nov 13, 2026
Haiyan SongDirector15,000Sep 15, 2026
CCM Frontier Power USA Holdings GP, LLCDirector, 10% owner–Aug 6, 2026
Marian WaltersDirector176,634Aug 6, 2026
Joseph NigroDirector41,723Aug 6, 2026
David UrbanDirector97,767Aug 6, 2026
GP Manager LLC CerberusDirector, 10% owner–Aug 6, 2026
CCM Frontier JV Holdco, LLCDirector, 10% owner–Aug 6, 2026
CCM Frontier Power USA Holdings, LPDirector, 10% owner–Aug 6, 2026
Jeffrey S. BornsteinDirector145,306Aug 6, 2026
Claude DembyDirector157,400Aug 6, 2026
Jeff McNeilDirector349,562Jun 9, 2026
Gregory S. NixonDirector23,111Jun 9, 2026
Nathaniel FickDirector–Apr 3, 2026
Russell Monoki StidolphDirector2,518,416Dec 8, 2025
Cerberus Capital Management II, L.P.Director, 10% owner7Jan 27, 2025
CCM Denali Equity Holdings, LPDirector, 10% owner0Jan 27, 2025
CCM Denali Equity Holdings GP, LLCDirector, 10% owner–Jan 27, 2025

Insider trades

Common stock transactions reported on Form 4, newest first

InsiderDateTransactionSharesPriceValueShares after
Alexander Dimitrief
Director
Nov 12, 2026Buy+25,000$1.86$46.50K294,296
Michelle Buczkowski
Chief Commercial Officer
Oct 29, 2026Sale(10b5-1 plan)−50,000$2.00$100.00K111,827
Michelle Buczkowski
Chief Commercial Officer
Oct 28, 2026Option exercise+100,000––161,827
Joe Mastrangelo
Chief Executive Officer, Director
Sep 16, 2026Sale(10b5-1 plan)−250,000$3.92$980.00K2,308,704
Sumeet Puri
Chief Accounting Officer
Sep 16, 2026Sale(10b5-1 plan)−43,750$3.92$171.50K280,195
Joe Mastrangelo
Chief Executive Officer, Director
Sep 14, 2026Award+500,000––2,558,704
Sumeet Puri
Chief Accounting Officer
Sep 14, 2026Option exercise+87,500––323,945
Haiyan Song
Director
Sep 14, 2026Buy+5,000$3.84$19.20K15,000
Haiyan Song
Director
Sep 11, 2026Buy+10,000$3.95$39.50K10,000
Sumeet Puri
Chief Accounting Officer
Sep 9, 2026Sale(10b5-1 plan)−34,167$4.13$141.11K236,445
Sumeet Puri
Chief Accounting Officer
Sep 5, 2026Option exercise+68,333––270,612
Sumeet Puri
Chief Accounting Officer
Jul 28, 2026Sale(10b5-1 plan)−29,167$3.36$98.00K202,279
Nathan Kroeker
Chief Commercial Officer
Jul 28, 2026Sale(10b5-1 plan)−110,417$3.36$371.00K887,527
Joe Mastrangelo
Chief Executive Officer, Director
Jul 27, 2026Sale−159,154$3.61$574.55K1,947,586
Sumeet Puri
Chief Accounting Officer
Jul 25, 2026Option exercise+58,334––231,446
Nathan Kroeker
Chief Commercial Officer
Jul 25, 2026Option exercise+220,834––997,944
Joe Mastrangelo
Chief Executive Officer, Director
Jul 25, 2026Option exercise+333,334––2,106,740
Alexander Dimitrief
Director
Jul 21, 2026Option exercise+17,897$5.48$98.08K269,296
Alexander Dimitrief
Director
Jul 21, 2026Option exercise+1,377$5.48$7.55K11,377
Joe Mastrangelo
Chief Executive Officer, Director
Jul 21, 2026Option exercise+111,118$5.48$608.93K2,058,704
Marian Walters
Director
Jul 21, 2026Option exercise+11,407$5.48$62.51K171,634
Claude Demby
Director
Jul 21, 2026Option exercise+1,825$5.48$10.00K157,400
Michelle Buczkowski
Chief Administration Officer
Jul 21, 2026Option exercise+2,585$5.48$14.17K61,827
Jeffrey S. Bornstein
Director
Jul 21, 2026Option exercise+9,558$5.48$52.38K143,806
Joseph Nigro
Director
Jul 21, 2026Option exercise+2,773$5.48$15.20K41,723
Nathan Kroeker
Chief Commercial Officer
Jul 21, 2026Option exercise+16,944$5.48$92.85K904,471
David Urban
Director
Jul 21, 2026Option exercise+12,185$5.48$66.77K97,767
Nathan Kroeker
CCO and Interim CFO
Jul 7, 2026Sale(10b5-1 plan)−79,309$4.68$371.17K777,110
Joe Mastrangelo
Chief Executive Officer, Director
Jul 6, 2026Tax withholding−121,245$5.06$613.50K1,773,406
Joe Mastrangelo
Chief Executive Officer, Director
Jul 5, 2026Option exercise+254,304––1,894,651
Nathan Kroeker
CCO and Interim CFO
Jul 5, 2026Option exercise+105,008––856,419
Nathan Kroeker
CCO and Interim CFO
Jul 3, 2026Option exercise+53,610––751,411
Nathan Kroeker
CCO and Interim CFO
Jun 30, 2026Sale(10b5-1 plan)−35,289$5.86$206.79K697,801
Sumeet Puri
Chief Accounting Officer
Jun 30, 2026Sale(10b5-1 plan)−8,823$5.86$51.70K173,112
Michelle Buczkowski
Chief Administration Officer
Jun 30, 2026Sale(10b5-1 plan)−11,469$5.87$67.32K59,242
Michael W. Silberman
Chief Legal Officer
Jun 30, 2026Sale(10b5-1 plan)−14,998$5.87$88.04K298,277
Joe Mastrangelo
Chief Executive Officer, Director
Jun 30, 2026Tax withholding−60,703$6.09$369.68K1,640,347
Nathan Kroeker
CCO and Interim CFO
Jun 26, 2026Option exercise+70,578––733,090
Sumeet Puri
Chief Accounting Officer
Jun 26, 2026Option exercise+17,645––181,935
Michelle Buczkowski
Chief Administration Officer
Jun 26, 2026Option exercise+22,938––70,711
Michael W. Silberman
Chief Legal Officer
Jun 26, 2026Option exercise+29,996––313,275
Joe Mastrangelo
Chief Executive Officer, Director
Jun 26, 2026Option exercise+130,570––1,701,050
Joe Mastrangelo
Chief Executive Officer, Director
Jun 12, 2026Tax withholding−116,646$6.06$706.87K1,570,480
Joe Mastrangelo
Chief Executive Officer, Director
Jun 12, 2026Option exercise+200,000$1.34$268.00K1,687,126
Marian Walters
Director
Jun 2, 2026Option exercise+1,782––160,227
Joseph Nigro
Director
Jun 2, 2026Option exercise+3,565––38,950
Marian Walters
Director
May 28, 2026Sale−30,000$9.18$275.40K158,445
Marian Walters
Director
May 28, 2026Option exercise+30,000$1.18$35.40K188,445
Marian Walters
Director
May 20, 2026Option exercise+22,319$1.18$26.34K180,764
Marian Walters
Director
May 20, 2026Sale−22,319$7.20$160.70K158,445
David Urban
Director
May 19, 2026Option exercise+23,111––85,582
Jeffrey S. Bornstein
Director
May 19, 2026Option exercise+30,815––146,574
Jeffrey S. Bornstein
Director
May 19, 2026Returned to company−12,326$6.88$84.80K134,248
Gregory S. Nixon
Director
May 19, 2026Award+23,111––23,111
Gregory S. Nixon
Director
May 19, 2026Returned to company−9,244$6.88$63.60K13,867
Jeff McNeil
Director
May 19, 2026Option exercise+23,111––122,290
Marian Walters
Director
May 19, 2026Option exercise+7,681$1.18$9.06K143,015
Marian Walters
Director
May 19, 2026Option exercise+23,111––158,445
Marian Walters
Director
May 19, 2026Sale−7,681$7.07$54.30K135,334
Claude Demby
Director
May 19, 2026Option exercise+23,111––164,819

Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.

Short interest

Shares sold short and not yet bought back, as of Oct 30, 2026 (FINRA, reported twice a month)

Short % of shares outstanding
–
137M shares short
Days to cover
5.5
At 25M shares a day
Change since last report
-1.5%
From 139M shares
Short volume, 20 days
45.5%
Of volume reported to FINRA

Shares sold short, last 12 months

Short sale volume counts trades marked short on any given day, including market-maker hedging, so it runs far higher than the share of Eos Energy Enterprises's stock actually held short. Settlement fails (shares not delivered on time) peaked at 2,325,829 shares on Sep 3, 2026 over the last 90 days.

Planned insider sales

Notices of proposed sale filed on Form 144 before shares are sold

SellerFiledSharesMarket valuePlanned saleAcquired through
Nathan Kroeker
Former Officer
Oct 29, 2026147,208$290.27KOct 29, 2026RSU Vesting
Michelle Buczkowski
Officer
Oct 29, 202650,000$95.25KOct 29, 2026RSU Vesting
Michael W. Silberman
Former Officer
Sep 22, 2026114,650$467.26KSep 22, 2026RSU Vesting
Sumeet Puri
Officer
Sep 16, 202643,750$181.56KSep 16, 2026RSU Vesting
Joe Mastrangelo
Officer, Director
Sep 16, 2026250,000$1.04MSep 16, 2026RSU Vesting
Nathan Kroeker
Former Officer
Sep 16, 2026165,625$687.34KSep 16, 2026RSU Vesting
Michael W. Silberman
Former Officer
Sep 16, 2026109,375$453.91KSep 16, 2026RSU Vesting
Sumeet Puri
Officer
Sep 9, 202634,167$142.82KSep 9, 2026RSU Vesting
Nathan Kroeker
Officer
Jul 28, 2026110,417$378.73KJul 28, 2026RSU Vesting
Michael W. Silberman
Former Officer
Jul 28, 202672,917$250.11KJul 28, 2026RSU Vesting
Sumeet Puri
Officer
Jul 28, 202629,167$100.04KJul 28, 2026RSU Vesting
Nathan Kroeker
Officer
Jul 7, 202679,309$412.41KJul 7, 2026RSU Vesting
Sumeet Puri
Officer
Jun 30, 20268,823$52.85KJun 30, 2026RSU Vesting
Michael W. Silberman
Officer
Jun 30, 202614,998$89.84KJun 30, 2026RSU Vesting
Nathan Kroeker
Officer
Jun 30, 202635,289$211.38KJun 30, 2026RSU Vesting

See a number that looks wrong?