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EOSE · Eos Energy Enterprises, Inc.
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EOSE Eos Energy Enterprises (EOSE) Insider Trading, Ownership & Congress Trades

Semiconductors & Electronics · Miscellaneous electrical machinery, equipment & supplies · CIK 0001805077
Quote by TradingView
Form 144 · 6
House members buying, 1 year
0
STOCK Act, US House only, disclosed up to 45 days after the trade
Funds added, last quarter
211
13F, latest reported quarter
Conversions, 180 days
35
Codes C/M, not in net · $1.4M priced

What the filings say about EOSE

Insiders, 180 days
-$3.6M net sold
1 buyer · 6 sellers · 21% of sales under a 10b5-1 plan
Planned sales (Form 144), 90 days
$3.0M
6 notices

Eos Energy Enterprises insider trades (Form 4)

Form 4 buys and sells (codes P and S). Grants, option exercises and conversions excluded.

Over the last 180 days, Eos Energy Enterprises, Inc. insiders sold a net $3.6M of stock across 106 Form 4 purchases and sales, with 1 insider buying. Source: SEC Form 4 filings, as of 2026-10-28.

Insider
Filed
Shares
Value
Since filing
Mastrangelo Joe
Chief Executive Officer
SELL
2026-09-16 SEC
250,000
$980.0K
-59.3%
Context
  • 12 earlier Form 4 trades (code P or S) here by this insider (8 buys, 4 sales), the last on Jul 27, 2026.
  • +22.1% median (+18.2% mean) 90-day return after 8 previous buys.
  • The trade is 10.8% of the 2,308,704 shares held after it.
  • 1 other insider sold within 30 days.
  • 211 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Chief Executive Officer Mastrangelo Joe sold about $980.0K of EOSE under a 10b5-1 plan on Sep 16, 2026; 1 other insider sold within 30 days and 211 funds added in the latest 13F quarter.
Puri Sumeet
Chief Accounting Officer
SELL
2026-09-16 SEC
43,750
$171.5K
-59.3%
Context
  • 7 earlier Form 4 trades (code P or S) here by this insider (7 sales), the last on Sep 9, 2026.
  • The trade is 15.6% of the 280,195 shares held after it.
  • 1 other insider sold within 30 days.
  • 211 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Chief Accounting Officer Puri Sumeet sold about $171.5K of EOSE under a 10b5-1 plan on Sep 16, 2026; 1 other insider sold within 30 days and 211 funds added in the latest 13F quarter.
Song Haiyan
Director
BUY
2026-09-15 SECtraded 2026-09-14
5,000
$19.2K
-58.8%
Context
  • 1 earlier Form 4 trade (code P or S) here by this insider (1 buy), the last on Sep 11, 2026.
  • The trade is 33.3% of the 15,000 shares held after it.
  • No other insider bought within 30 days.
  • 211 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Director Song Haiyan bought about $19.2K of EOSE on Sep 14, 2026; 211 funds added in the latest 13F quarter.
Song Haiyan
Director
BUY
2026-09-15 SECtraded 2026-09-11
10,000
$39.5K
-58.8%
Context
  • First Form 4 purchase or sale (code P or S) here by this insider on our record.
  • The trade is 100.0% of the 10,000 shares held after it.
  • No other insider bought within 30 days.
  • 211 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Director Song Haiyan bought about $39.5K of EOSE on Sep 11, 2026; 211 funds added in the latest 13F quarter.
Puri Sumeet
Chief Accounting Officer
SELL
2026-09-09 SEC
34,167
$141.1K
-59.4%
Context
  • 6 earlier Form 4 trades (code P or S) here by this insider (6 sales), the last on Jul 28, 2026.
  • The trade is 14.5% of the 236,445 shares held after it.
  • 1 other insider sold within 30 days.
  • 211 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Chief Accounting Officer Puri Sumeet sold about $141.1K of EOSE under a 10b5-1 plan on Sep 9, 2026; 1 other insider sold within 30 days and 211 funds added in the latest 13F quarter.
106 transactions on record
Since filing: total return from the first close after the filing to the latest close, dividend-adjusted. Not a forecast.
Context lines are counts over the filings above and returns from our own price history, never a price level. Not investment advice.
See all insider buying · insider selling
Showing the latest few. to see 101 more transactions and use the screener and CSV export. We store only your email; there is no password.
Seven facts, ranked against the sector · Rank is not a forecast
Insiders
net -$3.6M over 180 days
-$1.2M over 90 days
more than 56% of Semiconductors & Electronics
Congress
no House purchase disclosed in the last 12 months
Funds
211 funds bought in last quarter
more than 61% of Semiconductors & Electronics
Revenue
+631.8% year over year
more than 97% of Semiconductors & Electronics
Margin
-849.1% net margin
below 98% of Semiconductors & Electronics
Buybacks
no share repurchases reported
Short interest
37.8% of the float short (float per yahoo 2026-10-26) · 4.7 days to cover · settled 2026-09-30
more than 99% of Semiconductors & Electronics
What changed in the last 30 days
Nothing new filed in the last 30 days

Watch EOSE

A free account keeps a watchlist and can send one email a day when insiders, funds or Congress file on the names in it. No password and no card.

The year, with the filings on it
Total return over 12 months. Each marker is a filing; hover or tap one for the detail.
-88.7%12M
-89%-48%-7%+34%2025-102025-122026-022026-042026-062026-082026-10 2025-12-05 · Stidolph Russell Monoki sold $7.5M2025-12-08 · Stidolph Russell Monoki sold $3.5M2026-09-16 · Mastrangelo Joe sold $980.0K2026-01-26 · Kroeker Nathan sold $802.0K2025-12-04 · Walters Marian sold $790.5K2026-01-23 · Silberman Michael W sold $739.2K2026-07-27 · Mastrangelo Joe sold $574.5K2025-12-05 · Bornstein Jeffrey S sold $486.5K2025-12-08 · Stidolph Russell Monoki sold $460.8K2026-07-07 · Kroeker Nathan sold $371.2K2026-07-28 · Kroeker Nathan sold $371.0K2026-03-02 · Mastrangelo Joe bought $345.0K2026-05-28 · Walters Marian sold $275.4K2026-06-30 · Kroeker Nathan sold $206.8K2026-09-16 · Puri Sumeet sold $171.5K2026-05-20 · Walters Marian sold $160.7K2026-03-04 · Mastrangelo Joe bought $157.3K2026-09-09 · Puri Sumeet sold $141.1K2025-12-04 · Bornstein Jeffrey S sold $126.0K2026-03-09 · Urban David bought $100.1K2026-07-28 · Puri Sumeet sold $98.0K2026-03-02 · DIMITRIEF ALEXANDER bought $90.6K2026-06-30 · Silberman Michael W sold $88.0K2026-06-30 · Buczkowski Michelle sold $67.3K2026-05-19 · Walters Marian sold $54.3K2026-06-30 · Puri Sumeet sold $51.7K2026-09-11 · Song Haiyan bought $39.5K2026-09-14 · Song Haiyan bought $19.2K2025-12-08 · Stidolph Russell Monoki sold $11.4K2026-09-22 · Michael Silberman filed to sell $467.3K2026-09-16 · Puri Sumeet filed to sell $181.6K2026-09-16 · Mastrangelo Joe filed to sell $1.0M2026-09-16 · Kroeker Nathan filed to sell $687.3K2026-09-16 · Silberman Michael W filed to sell $453.9K2026-09-09 · Puri Sumeet filed to sell $142.8K2026-07-28 · Kroeker Nathan filed to sell $378.7K2026-07-28 · Silberman Michael W filed to sell $250.1K2026-07-28 · Puri Sumeet filed to sell $100.0K2026-07-07 · Kroeker Nathan filed to sell $412.4K2026-06-30 · Buczkowski Michelle filed to sell $68.7K2026-06-30 · Kroeker Nathan filed to sell $211.4K2026-06-30 · Silberman Michael W filed to sell $89.8K2026-06-30 · Puri Sumeet filed to sell $52.8K
Insider buyInsider sellForm 144 (planned sale)
Indexed to 100, dividend-adjusted, not a price chart. When a name files heavily, the largest trades are drawn first.

Who owns EOSE: institutional holders (13F)

13F holdings, latest reported quarter
BlackRock, Inc.
27,130,305 sh
$159.5M
VANGUARD CAPITAL MANAGEMENT LLC
15,021,392 sh
$88.3M
Hudson Bay Capital Management LP
13,683,634 sh
$80.5M
Driehaus Capital Management LLC
13,556,010 sh
$79.7M
TWO SIGMA INVESTMENTS, LP
12,783,883 sh
$75.2M

Congress trades in EOSE

No Congress trades reported
No House member has disclosed a trade in this stock. See what Congress is buying.

Activist and 5% holders (13D/13G)

No 5%+ ownership filings
Nobody has filed for crossing 5%. That is a fact, not missing data.

EOSE planned insider sales (Form 144)

Notice of intent to sell, filed before any sale
Michael Silberman
Filed 2026-09-22
$467.3K
Puri Sumeet
Filed 2026-09-16
$181.6K
Mastrangelo Joe
Filed 2026-09-16
$1.0M
Kroeker Nathan
Filed 2026-09-16
$687.3K
Silberman Michael W
Filed 2026-09-16
$453.9K

EOSE mutual fund holders (N-PORT)

Funds ranked by the share of their own portfolio in this stock (N-PORT).
ALPS Clean Energy ETF
$4.5M position · as of 2026-05-31
3.1%
State Street(R) SPDR(R) S&P Kensho Clean Power ETF
$6.1M position · as of 2026-06-30
2.5%
Global X CleanTech ETF
$643.3K position · as of 2026-05-31
1.9%
Invesco WilderHill Clean Energy ETF
$3.2M position · as of 2026-07-31
0.8%
Pear tree essex environmental opportunities fund
$248.4K position · as of 2026-06-30
0.7%
WesMark Small Company Fund
$1.3M position · as of 2026-06-30
0.7%
SEC N-PORT, monthly, about 60 days late · funds ≥ $10M · % is the share of the fund's own portfolio
Executive pay vs shareholder return · Joe Mastrangelo
CEO pay, headline and as actually paid, against the company's return and its chosen peers' (DEF 14A).
FY
CEO total
Actually paid
Other execs, avg
TSR
Peer TSR
2025
$4.9M
$23.1M
$3.2M
+674%
n/a
2024
$5.5M
$15.3M
$3.0M
+228%
n/a
2023
$4.3M
$2.0M
$2.1M
-26%
n/a
2022
$1.2M
-$3.1M
$1.8M
-80%
n/a
Tagged by the company under SEC Item 402(v). Returns are cumulative from the start of the disclosure period. Green where the company beat its own peer group.
Live price
Daily candles from TradingView, under their licence. No filings marked.
Why this name is on the desk
Insiders have filed to sell, before selling.
The record shows a net $3.6M sold by insiders over 180 days, 211 funds added last quarter, $3.0M in planned Form 144 sales. Each figure is a federal filing, dated the day it went public.
Backtest this pattern Open the screener
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EOSE financials

Revenue growth
+631.8%
XBRL, annual
Net margin
-849.1%
Ratios from the company's XBRL filings, latest filings
Revenue, TTM
$214.2M
four quarters, 2025-07-01 to 2026-06-30
Net margin, TTM
-246.8%
net income over revenue, 2025-07-01 to 2026-06-30
Free cash flow, TTM
-$420.2M
operating cash flow minus capex, 2025-07-01 to 2026-06-30
Debt to equity
n/a
equity is zero or negative, the ratio has no meaning
Cash flow to debt
-0.50x
TTM operating cash flow over long-term 2026-06-30 plus current 2026-06-30
Return on equity
n/a
average equity is zero or negative
Return on assets
-83.4%
TTM net income over average of 2025-06-30 and 2026-06-30
Return on invested capital
n/a
pre-tax loss, no effective tax rate to apply
Return on capital employed
-60.8%
operating income (EBIT proxy) over average of 2025-06-30 and 2026-06-30 minus current liabilities
P/E, trailing
n/a
trailing loss, a multiple of a loss is not meaningful
Enterprise value
$901.6M
market value at close 2026-10-26 on 2026-08-03 shares, plus long-term 2026-06-30 plus current 2026-06-30, minus cash 2026-06-30
FCF yield
-71.2%
TTM free cash flow over market value at close 2026-10-26
PEG, trailing
n/a
trailing loss, a multiple of a loss is not meaningful
Price as of 2026-10-26. Hover or tap a tile for its yearly and quarterly history.
Method
TTM is four consecutive fiscal quarters; Q4 is the year minus nine months when not filed. Returns use the average of opening and closing balances. EBIT is approximated by operating income. PEG uses trailing EPS growth.
Fundamentals
Annual figures from XBRL filings. Pick a past date to see them as known then.
2025-122024-122023-122022-12
Revenue$114.2M$15.6M$16.4M$17.9M
Gross profit-$143.8M-$83.3M-$73.4Mn/a
Operating income-$259.3M-$175.2M-$152.9M-$221.3M
Net income-$969.6M-$685.9M-$229.5M-$229.8M
EPS (diluted)-6.69-4.55-1.81-3.68
Operating cash flow-$211.2M-$153.9M-$145.0M-$196.9M
Cash$568.0M$74.3M$69.5M$17.1M
Long-term debt$812.9M$314.9M$200.5M$170.3M
SEC XBRL, fiscal years, as known on 2026-10-28

EOSE Stock Sonar score 6/7 axes

Find similar shapesCompare

EOSE ranks highest on insider conviction (68th percentile) and institutional and government (61st), and lowest on profitability (10th), among Semiconductors & Electronics peers.

ProfitHealthGrowthInsidersInstitutionsRisk
Profitability
10
Inputs
  • Return on equityaverage equity is zero or negative
  • Return on assets-83.4% · 10 pct, sector of 171
  • Return on invested capitalpre-tax loss, no effective tax rate to apply
  • Return on capital employed-60.8% · 9 pct, sector of 155
Financial health
26
Inputs
  • Debt to equityequity is zero or negative, the ratio has no meaning
  • Cash flow to debt-0.50x · 26 pct, sector of 136
Growth
53
Inputs
  • Revenue growth, YoY+631.8% · 97 pct, sector of 194
  • Backlog growth, YoY-67.5% · 8 pct, sector of 51
Insider conviction
68
Inputs
  • Net Form 4 buying (codes P and S), 180d-$2.3M · 59 pct, sector of 147
  • Insider buyers, 180d1 · 77 pct, sector of 151
Institutional and government
61
Inputs
  • Funds adding, latest quarter211 · 61 pct, sector of 184
  • Congress net buyers, 365dno Congress trades in 365 days
  • Federal contracts, 180dno federal contracts in 180 days
  • Lobbying spend, 4 quartersno lobbying filings in the last four quarters
Risk and compliance
15
Inputs
  • Short interest, % of float+37.8% · 3 pct, sector of 221
  • Recalls per $1B revenue, 3ynot measured for this sector, almost no peer has an event
  • EPA cases per $1B revenue, 5ynot measured for this sector, almost no peer has an event
  • New text in Risk Factors, latest 10-K+18.3% · 26 pct, sector of 152
1 not measured: US patents
  • US patents needs 1 of 2 inputs, 0 present: patent data not loaded yet

6 of 7 axes scored. Each is a percentile against sector peers (all companies when the sector is thin); higher is better. An unscored axis is unmeasured, not low. How it is scored

EOSE filings, in plain words

Are Eos Energy Enterprises insiders buying or selling EOSE?

In the 180 days to 2026-10-28, Eos Energy Enterprises insiders were net sellers, a net $3.6M: $58.7K of purchases and $3.6M of sales reported on Form 4, by 1 buyer and 6 sellers.

Are there planned insider sales of EOSE?

Yes. 6 Form 144 notices of planned insider sales were filed in the 90 days to 2026-10-28, covering $3.0M of stock; the latest, by Michael Silberman, was filed 2026-09-22.

Read the full summary

In the 180 days to 2026-10-28, Eos Energy Enterprises insiders were net sellers of EOSE, a net $3.6M across purchases and sales reported on Form 4 by 1 buyer and 6 sellers. Sales outweighed purchases more than tenfold by value. 21% of the 14 insider sales were made under a Rule 10b5-1 plan; the rest were not flagged as planned. Insiders filed 6 Form 144 notices of intent to sell in the 90 days to 2026-10-28, covering $3.0M of stock. Each figure is counted from SEC and House filings as of 2026-10-28, dated the day the filing was made public.

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