🕵️ MFS High Yield Municipal Trust ($CMU)

SEC insider & ownership activity, last 12 months · CIK 809844 · every row links its SEC filing

Over the last 12 months insiders bought $2K with no open-market selling against it. Bulldog Investors, LLP bought $2K in discretionary trades (Jan). Rivernorth Capital Management, LLC added 10.1% → 11.6%. No red-flag 8-Ks in the window.

Aug 2025: net +$0 Sep 2025: net +$0 Oct 2025: net +$0 Nov 2025: net +$0 Dec 2025: net +$0 Jan 2026: net +$2K Mar 2026: net +$0 Mar 2026: net +$0 Apr 2026: net +$0 May 2026: net +$0 Jun 2026: net +$0 Jul 2026: net +$0
Monthly net open-market insider flow, last 12 months (up = net buying)

Insider flow

1 buyer, $2K (1 lots) · 0 sellers, $0 (0 lots)

InsiderBuysBoughtSellsSoldLast
Bulldog Investors, LLP1$2K 0–Jan 20, 2026

5%+ holders

HolderStakeClassScheduleEvent
Rivernorth Capital Management, LLC 11.6% 13GMay 15, 2026 filing ↗
Almitas Capital LLC 5.9% 13GMay 18, 2026 filing ↗
JPMorgan Chase Bank, National Association exited 13GJul 1, 2026 filing ↗

Planned insider sales (Form 144)

No sale notices filed in the last 12 months.

Material events (8-K)

No 8-K filings in the last 12 months.