Orion Energy Systems, Inc.
Orion Energy Systems, Inc. (OESX) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · OESX · as of Mar 31, 2025
Ownership Breakdown
41
Institutional Holders
▼ 1 vs Q4
$10.56M
Total Inst. Value
▼ $1.56M vs Q4
3.42M
Shares Outstanding
freeFloat 98.93%
14.64M
13F Shares Held
▼ 508,484 vs Q4
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
OESX largest shareholders · institutional ownership
Q1 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
NORTH STAR INVESTMENT MANAGEMENT CORP. electric lighting & wiring equipment | 3.71M | 11.26% | 11.26% | $2.68B | Apr 17, 2025 | — held |
GRACE & WHITE INC /NY electric lighting & wiring equipment | 2.78M | 8.45% | 8.45% | $2.01B | Apr 22, 2025 | ▲ 39.0K |
TIETON CAPITAL MANAGEMENT, LLC electric lighting & wiring equipment | 2.50M | 7.59% | 7.59% | $1.80B | May 12, 2025 | ▼ 159.4K |
VANGUARD GROUP INC electric lighting & wiring equipment | 1.29M | 3.92% | 3.92% | $930.88M | May 9, 2025 | ▲ 14.6K |
RENAISSANCE TECHNOLOGIES LLC electric lighting & wiring equipment | 1.26M | 3.81% | 3.81% | $906.75M | May 14, 2025 | ▼ 23.2K |
US BANCORP \DE\ electric lighting & wiring equipment | 799.5K | 2.43% | 2.43% | $576.52M | May 8, 2025 | ▲ 39.0K |
GEODE CAPITAL MANAGEMENT, LLC electric lighting & wiring equipment | 373.2K | 1.13% | 1.13% | $269.18M | May 13, 2025 | ▲ 61.1K |
ACUITAS INVESTMENTS, LLC electric lighting & wiring equipment | 362.2K | 1.10% | 1.10% | $261.21M | Apr 28, 2025 | ▼ 654.7K |
PENBROOK MANAGEMENT LLC electric lighting & wiring equipment | 337.6K | 1.02% | 1.02% | $243.44M | Apr 1, 2025 | ▼ 3.3K |
BLACKROCK, INC. electric lighting & wiring equipment | 245.7K | 74.56% | 74.56% | $177.20M | May 2, 2025 | — held |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q1 2025 vs prior quarter
Q1 2025
7
Increased
+382.5K shares2
New Positions
first time holders9
Decreased
−918.9K shares3
Sold Out
fully exitedNet shares change (top 50)
536.5K
+382.5K / −918.9K
Net new holders
-3
2 new / 3 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
OESX insider trading · insider activity
Source: SEC Form 4
Insiders have been net buyers of shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
1
Buy transactions
0
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
BRODIN J PER EVP, CFO, CAO & Treasurer | Feb 27, 2026 | Purchase | 500 | $11.07 | $5.5K | 92.8K | Form 4 ↗ |
Washlow Sally A. Chief Executive Officer | Nov 19, 2025 | Purchase | 21,166 | $14.17 | $299.9K | 46.5K | Form 4 ↗ |
Washlow Sally A. Chief Executive Officer | Aug 7, 2025 | Award | 500,000 | $0.60 | $300.0K | 500.0K | Form 4 ↗ |
BRODIN J PER EVP, CFO, CAO & Treasurer | Jul 18, 2025 | Award | 125,000 | $0.60 | $75.0K | 125.0K | Form 4 ↗ |
Green Scott A. President and COO | Jul 18, 2025 | Award | 125,000 | $0.60 | $75.0K | 125.0K | Form 4 ↗ |
Wishart-Smith Heather L director | Jul 1, 2025 | Award | 20,000 | — | — | 78.2K | Form 4 ↗ |
Washlow Sally A. Chief Executive Officer | Jul 1, 2025 | Award | 200,000 | — | — | 253.6K | Form 4 ↗ |
Shapiro Richard A director | Jul 1, 2025 | Award | 20,000 | — | — | 66.9K | Form 4 ↗ |
RICHSTONE ELLEN B director | Jul 1, 2025 | Award | 20,000 | — | — | 333.7K | Form 4 ↗ |
Otten Anthony L. director | Jul 1, 2025 | Award | 20,000 | — | — | 234.4K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Orion Energy Systems, Inc. (OESX) is primarily owned by institutional investors, who hold approximately 100.0% of total shares outstanding. Company insiders own approximately 1.07%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of Orion Energy Systems, Inc. is NORTH STAR INVESTMENT MANAGEMENT CORP., holding approximately 3.71 million shares — equal to 11.26% of outstanding shares — as of March 31, 2025.
A total of 41 institutional investors currently hold OESX stock, with a combined institutional value of approximately $10,558,310 as of the most recent 13F filing period.
Frequently asked questions
OESX ownershipOrion Energy Systems, Inc. (OESX) is primarily owned by institutional investors, who hold approximately 100.0% of shares. The largest shareholder is NORTH STAR INVESTMENT MANAGEMENT CORP. with a 11.26% stake. Company insiders hold 1.07%. Data sourced from SEC Form 13F as of March 31, 2025.