4 insiders reported 7 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. (Insider) Sell 330 shares, Bulldog Investors, LLP (Insider) Buy 678 shares, GOLDSTEIN PHILLIP (Insider) Buy 678 shares, Dakos Andrew (Insider) Buy 678 shares, Dakos Andrew (Insider) Sell 678 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-09 | JPMorgan Chase Bank, N.A. | Insider | Sell | 330 | $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