Eos Energy Surges 19% on Google Partnership for $350M West Virginia Battery Project

Revelation News Editorial DeskSeptember 2, 2026

Source Summary

Eos Energy Enterprises closed at $3.61, up 18.75%, following an announced collaboration between Google and MN8 Energy on a $350 million grid-scale battery storage project in West Virginia. The company provides long-duration battery storage systems for grid applications. Investors are monitoring project spending developments.

Why it matters

The partnership signals major investment in grid-scale battery storage infrastructure, a key technology for renewable energy integration and grid stability.

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NASDAQ:EOSELive chart

Trading trends

The chart totals every SEC-reported transaction by month and share count, separating informative purchases and sales from non-informative awards, vesting, exercises, tax withholding and transfers. Records without a reported price remain included. Only informative purchases and sales affect the conservative sentiment signal.

Recent SEC-reported share and derivative transactions in Eos Energy Enterprises, Inc..

Insider activity sentiment

Neutral

BearishNeutralBullish

1 discretionary purchases · 1 discretionary sales

Confidence: Medium

Informative buyNon-informative buyInformative sellNon-informative sell

Insiders	Activity	Description	Shares	Avg. price / share	Est. value	Trade date
Chief Accounting OfficerPuri Sumeet	Non-informative sell	Common StockReported 10b5-1 plan (S)	43,750	$3.92	$171,500	Sep 16, 2026
Chief Executive OfficerMastrangelo Joe	Non-informative sell	Common StockReported 10b5-1 plan (S)	250,000	$3.92	$980,000	Sep 16, 2026
Chief Accounting OfficerPuri Sumeet	Non-informative buy	Common StockExercise or conversion; not an open-market trade (M)	87,500	—	—	Sep 14, 2026
Chief Executive OfficerMastrangelo Joe	Non-informative buy	Common StockCompany grant or award (A)	500,000	—	—	Sep 14, 2026
Chief Executive OfficerMastrangelo Joe	Non-informative sell	Performance-Based Restricted Stock UnitsExercise or conversion; not an open-market trade (M)	500,000	—	—	Sep 14, 2026

As filed with the SEC. Estimated value is shown only for purchases or sales with a positive reported transaction price; awards, gifts and similar activity are not assigned an assumed market value. Amendments may change the record. This is not investment advice.

Short interest

Open short positions reported twice monthly; this is not daily short-sale volume.

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Owner	Activity	Change	Shares held	Value (thousands)	Reported
Blackrock, Inc.	Buy	3,046,526 (12.65%)	27,130,305	$45,579	6/30/2026
Vanguard Group Inc	Buy	3,080,012 (19.824%)	18,616,874	$31,276	12/31/2025
Vanguard Capital Management Llc	Buy	185,955 (1.253%)	15,021,392	$25,236	6/30/2026
Hudson Bay Capital Management Lp	Buy	13,683,634 (New)	13,683,634	$22,989	6/30/2026
Driehaus Capital Management Llc	Sell	-1,313,160 (-8.831%)	13,556,010	$22,774	6/30/2026
Two Sigma Investments, Lp	Sell	-1,290,118 (-9.167%)	12,783,883	$21,477	6/30/2026
State Street Corp	Buy	2,137,005 (26.653%)	10,154,935	$17,060	6/30/2026
Susquehanna International Group, Llp	Buy	3,332,709 (52.48%)	9,683,190	$16,268	6/30/2026
Geode Capital Management, Llc	Buy	1,082,028 (13.849%)	8,894,922	$14,943	6/30/2026
Electron Capital Partners, Llc	Buy	1,302,198 (24.206%)	6,681,859	$11,226	6/30/2026
Morgan Stanley	Buy	2,353,045 (79.474%)	5,313,829	$8,927	6/30/2026
Stifel Financial Corp	Buy	280,084 (6.768%)	4,418,639	$7,423	6/30/2026

Settlement date	Short interest	Avg. daily volume	Change vs. previous report	Days to cover
Sep 30, 2026	134,847,658	28,760,824	+12.36%	4.69
Sep 15, 2026	120,015,346	29,047,980	+7.81%	4.13
Aug 31, 2026	111,323,398	22,470,177	-1.27%	4.95
Aug 14, 2026	112,753,376	27,431,722	-2.56%	4.11
Jul 31, 2026	115,719,997	26,545,210	+9.26%	4.36
Jul 15, 2026	105,912,700	26,977,591	+0.86%	3.93
Jun 30, 2026	105,004,475	25,970,916	+3.98%	4.04
Jun 15, 2026	100,986,344	20,117,414	—	5.02

Source Summary

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Insider activity sentiment

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Insider activity sentiment

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