4 insiders reported 8 Form 4 transactions for MFS HIGH YIELD MUNICIPAL TRUST (CMU) over the past 18 months (most recent 2026-06-09). Recent activity: JPMorgan Chase Bank, N.A. (10% Owner) Sell 330 shares, JPMorgan Chase Bank, N.A. (10% Owner) Sell 180 shares, Bulldog Investors, LLP (Insider) Buy 678 shares, GOLDSTEIN PHILLIP (Insider) Buy 678 shares, Dakos Andrew (Insider) Buy 678 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-09 | JPMorgan Chase Bank, N.A. | 10% Owner | Sell | 330 | $0 |
| 2026-05-05 | JPMorgan Chase Bank, N.A. | 10% Owner | Sell | 180 | $0 |
| 2026-01-23 | Bulldog Investors, LLP | Insider | Buy | 678 | $2,373 |
| 2026-01-23 | GOLDSTEIN PHILLIP | Insider | Buy | 678 | $2,373 |
| 2026-01-23 | Dakos Andrew | Insider | Buy | 678 | $2,373 |
| 2026-01-22 | Dakos Andrew | Insider | Sell | 678 | $2,373 |
| 2026-01-22 | Bulldog Investors, LLP | Insider | Sell | 678 | $2,373 |
| 2026-01-22 | GOLDSTEIN PHILLIP | Insider | Sell | 678 | $2,373 |
Source: SEC Form 4 filings · as of 2026-06-09