MGE Energy, Inc. (MGEE) ownership: Top institutional holder: BlackRock, Inc. ($421.98M). Insider activity: Net Seller (0 buys, 19 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| BlackRock, Inc. | 5459694.00 | $421.98M | 2026-03-31 |
| VANGUARD GROUP INC | 4551130.00 | $356.90M | 2025-12-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 2663101.00 | $205.83M | 2026-03-31 |
| STATE STREET CORP | 1918678.00 | $148.29M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 1641026.00 | $126.83M | 2026-03-31 |
| GEODE CAPITAL MANAGEMENT, LLC | 925771.00 | $71.57M | 2026-03-31 |
| BlackRock Fund Advisors | 1088588.00 | $71.08M | 2016-12-31 |
| DIMENSIONAL FUND ADVISORS LP | 684267.00 | $52.89M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-04-17 | |
| Sell | null | 2026-03-11 | |
| Sell | null | 2026-03-02 | |
| Sell | null | 2026-03-02 | |
| Sell | null | 2026-03-02 | |
| Sell | null | 2026-03-02 | |
| Sell | null | 2026-03-02 | |
| Sell | null | 2026-03-02 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.