CMU

MFS High Yield Municipal Trust$3.36+0.00 (—)

Prev Close$3.37·MCap$91.3M·P/E—·Vol—·Yield—

▲

Buys (12M)

$2.4K

▼

Sells (12M)

$2.4K

◆

Net Activity

Net Buyer

$0.00

●

Active Insiders

last 12 mo

Over the past 12 months, insider activity at MFS High Yield Municipal Trust (CMU) has been mixed between buying and selling, with 1 insider purchase totaling $2.4K and 1 insider sale totaling $2.4K. The most recent insider transaction was by Bulldog Investors, LLP (10 percent owner), who purchased $2.4K worth of shares on Jan 23, 2026. MFS High Yield Municipal Trust operates in the Technology sector, within the General industry, with a market cap of $91.3M.

CMU Insider Trading Activity

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Jan 23, 2026	Bulldog Investors, LLP	10 percent owner	Buy	678	$3.50	$2.4K	24,878
Jan 20, 2026	Bulldog Investors, LLP	10% Owner	Sell	678	$3.50	$2.4K	0
Jun 8, 2023	Saba Capital Management, L.P.	10% Owner	Buy	371,552	$3.15	$1.17M1.5% OS	3,294,787
May 23, 2023	Saba Capital Management, L.P.	10% Owner	Buy	10,923	$3.18	$34.7K	2,923,235
May 19, 2023	Saba Capital Management, L.P.	10% Owner	Buy	179	$3.20	$572.80	2,912,312
May 17, 2023	Saba Capital Management, L.P.	10% Owner	Buy	24,647	$3.21	$79.1K	2,912,133
May 15, 2023	Saba Capital Management, L.P.	10% Owner	Buy	15,150	$3.19	$48.3K	2,887,486
May 8, 2023	Saba Capital Management, L.P.	10% Owner	Buy	6,893	$3.18	$21.9K	2,872,336

CMU Insider Buying Activity

The following table shows recent insider purchases of MFS High Yield Municipal Trust (CMU) stock reported via SEC Form 4 filings.

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Jan 23, 2026	Bulldog Investors, LLP	10 percent owner	Buy	678	$3.50	$2.4K	24,878
Jun 8, 2023	Saba Capital Management, L.P.	10% Owner	Buy	371,552	$3.15	$1.17M1.5% OS	3,294,787
May 23, 2023	Saba Capital Management, L.P.	10% Owner	Buy	10,923	$3.18	$34.7K	2,923,235
May 19, 2023	Saba Capital Management, L.P.	10% Owner	Buy	179	$3.20	$572.80	2,912,312
May 17, 2023	Saba Capital Management, L.P.	10% Owner	Buy	24,647	$3.21	$79.1K	2,912,133
May 15, 2023	Saba Capital Management, L.P.	10% Owner	Buy	15,150	$3.19	$48.3K	2,887,486
May 8, 2023	Saba Capital Management, L.P.	10% Owner	Buy	6,893	$3.18	$21.9K	2,872,336

CMU Insider Selling Activity

The following table shows recent insider sales of MFS High Yield Municipal Trust (CMU) stock reported via SEC Form 4 filings.

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Jan 20, 2026	Bulldog Investors, LLP	10% Owner	Sell	678	$3.50	$2.4K	0

CMU Insiders

Bulldog Investors, LLP

10% Owner

Bought $2.4KSold $2.4K

2 tradesLast: Jan 23, 2026

Saba Capital Management, L.P.

10% Owner

Bought $1.36M

6 tradesLast: Jun 8, 2023

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