MFS HIGH YIELD MUNICIPAL TRUST (CMU)

Latest Insider Confidence Score

2026Q1

53.2
Bullish

Company insider confidence (by quarter)

2003Q2 2026Q1

Largest shareholders

Insider Role (last 12 mo) Shares held Filed at
Saba Capital Management, L.P. 10% Owner 2,865,443 Nov 13, 2023
Weinstein Boaz 10% Owner 2,865,443 Nov 13, 2023
Goldstein Phillip 10% Owner 24,200 Feb 14, 2025
Dakos Andrew 10% Owner 24,200 Feb 14, 2025
Bulldog Investors, LLC 10% Owner 24,200 Feb 14, 2025

Recent buy/sell transactions

Exec date Filing date Insider Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Jan 20, 2026 Jan 23, 2026 Bulldog Investors, LLP 10% Owner Buy 82.5 +678 2.80% ✗ $2.4K
Jan 20, 2026 Jan 22, 2026 Bulldog Investors, LLP 10% Owner Sell 27.5 -678 -2.65% ✗ $2.4K
Jan 9, 2026 MURPHY THOMAS P. Other Neutral 52.5 - 0.00% ✗ -
Dec 11, 2025 FLAHERTY JOSEPH Other Neutral 52.5 - 0.00% ✗ -
Oct 6, 2025 KANWAL AMRIT Other Neutral 52.5 - 0.00% ✗ -
Jun 27, 2025 Adams William Other Neutral 52.5 - 0.00% ✗ -
Feb 14, 2025 Bulldog Investors, LLP 10% Owner Neutral 52.5 - 0.00% ✗ -
Jan 23, 2025 DOUGHERTY LINDA Other Neutral 52.5 - 0.00% ✗ -
Jan 8, 2025 WILLIAMS DARRELL A Director Neutral 52.5 - 0.00% ✗ -
Jan 8, 2025 SMITH PAULA ELISABETH Director Neutral 52.5 - 0.00% ✗ -
Jan 8, 2025 O'NEILL MACKEY ALISON Other Neutral 52.5 - 0.00% ✗ -
Jan 8, 2025 Mackey Alexander Other Neutral 52.5 - 0.00% ✗ -
Jan 8, 2025 Gomez-Bravo Pilar Other Neutral 52.5 - 0.00% ✗ -
Oct 1, 2024 YOST JAMES O Other Neutral 52.5 - 0.00% ✗ -
Sep 19, 2024 Phillips Kasey Other Neutral 52.5 - 0.00% ✗ -
Sep 18, 2024 SINGH MANJIT Other Neutral 52.5 - 0.00% ✗ -
Sep 5, 2024 Sep 13, 2024 JPMorgan Chase Bank, N.A. 10% Owner Neutral 52.5 - 0.00% ✗ -
Aug 30, 2024 Sep 3, 2024 JPMorgan Chase Bank, N.A. 10% Owner Neutral 27.5 -13 -2.49% ✗ -
Aug 2, 2024 Aug 6, 2024 JPMorgan Chase Bank, N.A. 10% Owner Neutral 27.5 -77 -12.83% ✗ -
Jul 16, 2024 DEACON TIMOTHY Other Neutral 52.5 - 0.00% ✗ -
Apr 6, 2023 Nov 13, 2023 Saba Capital Management, L.P. 10% Owner Buy 47.5 +400 0.01% ✗ $1.3K
Nov 8, 2023 Nov 13, 2023 Saba Capital Management, L.P. 10% Owner Sell 17.5 -856,816 -25.82% ✗ $2.9M
Nov 8, 2023 Nov 9, 2023 Saba Capital Management, L.P. 10% Owner Sell 17.5 -846,368 -25.50% ✗ $2.9M
Nov 3, 2023 Nov 7, 2023 JPMorgan Chase Bank, N.A. 10% Owner Neutral 27.5 -100 -14.29% ✗ -
Oct 6, 2023 Oct 10, 2023 Saba Capital Management, L.P. 10% Owner Sell 51.3 -5,410 -0.16% ✗ $16.5K
Oct 4, 2023 Oct 6, 2023 Saba Capital Management, L.P. 10% Owner Sell 32.5 -21,129 -0.63% ✗ $65.2K
Oct 3, 2023 Oct 3, 2023 Saba Capital Management, L.P. 10% Owner Sell 51.3 -6,358 -0.19% ✗ $19.7K
Sep 6, 2023 DOUGHERTY LINDA Other Neutral 52.5 - 0.00% ✗ -
Jul 24, 2023 Jul 25, 2023 Saba Capital Management, L.P. 10% Owner Buy 82.5 +46,009 1.39% ✗ $151.8K
Jul 18, 2023 Jul 19, 2023 Saba Capital Management, L.P. 10% Owner Buy 47.5 +521 0.02% ✗ $1.7K
Jun 27, 2023 Jun 28, 2023 Saba Capital Management, L.P. 10% Owner Buy 61.3 +7,194 0.22% ✗ $23.3K
Jun 21, 2023 Jun 22, 2023 Saba Capital Management, L.P. 10% Owner Buy 55.0 +3,070 0.09% ✗ $9.8K
Jun 6, 2023 Jun 8, 2023 Saba Capital Management, L.P. 10% Owner Buy 100.0 +371,552 12.71% ✗ $1.2M
May 19, 2023 May 23, 2023 Saba Capital Management, L.P. 10% Owner Buy 61.3 +10,923 0.38% ✗ $34.7K
May 18, 2023 May 19, 2023 Saba Capital Management, L.P. 10% Owner Buy 47.5 +179 0.01% ✗ $572.8
May 15, 2023 May 17, 2023 Saba Capital Management, L.P. 10% Owner Buy 72.5 +24,647 0.85% ✗ $79.1K
May 11, 2023 May 15, 2023 Saba Capital Management, L.P. 10% Owner Buy 68.8 +15,150 0.53% ✗ $48.3K
May 5, 2023 May 8, 2023 Saba Capital Management, L.P. 10% Owner Buy 61.3 +6,893 0.24% ✗ $21.9K
Apr 14, 2023 Lasman Gary S Other Neutral 52.5 - 0.00% ✗ -
Apr 10, 2023 Saba Capital Management, L.P. 10% Owner Neutral 52.5 - 0.00% ✗ -
Nov 28, 2022 Nov 30, 2022 JPMorgan Chase Bank, N.A. 10% Owner Neutral 27.5 -50 -6.67% ✗ -
Oct 25, 2022 CONNORS THOMAS H Other Neutral 52.5 - 0.00% ✗ -
Sep 6, 2022 MANNING ROBERT J Director Neutral 52.5 - 0.00% ✗ -
Aug 31, 2022 WOLIN MARTIN J Other Neutral 52.5 - 0.00% ✗ -
Apr 19, 2022 Beatty Kevin Other Neutral 52.5 - 0.00% ✗ -
Mar 10, 2022 Dawson Michael L Other Neutral 52.5 - 0.00% ✗ -
Mar 10, 2022 LICEA-MAILLOUX ROSA Other Neutral 52.5 - 0.00% ✗ -
Feb 15, 2022 STELMACH ROBIN A Director Neutral 52.5 - 0.00% ✗ -
Jan 4, 2022 GOULET JACQUES JR Other Neutral 52.5 - 0.00% ✗ -
Dec 23, 2021 Peacher Stephen Clarkson Other Neutral 52.5 - 0.00% ✗ -
Oct 22, 2021 Antonelli David A Other Neutral 52.5 - 0.00% ✗ -
Jul 27, 2021 JPMorgan Chase Bank, N.A. 10% Owner Neutral 52.5 - 0.00% ✗ -
Jul 20, 2021 Jul 22, 2021 CITIGROUP INC 10% Owner Sell 15.0 -3,000 -100.00% ✗ $75M
Jun 25, 2021 SINGH MANJIT Director Neutral 52.5 - 0.00% ✗ -
Apr 1, 2021 KOSTY JASON Other Neutral 52.5 - 0.00% ✗ -
Aug 26, 2020 Hegarty Michael Director Neutral 52.5 - 0.00% ✗ -
Aug 26, 2020 Hegarty Michael Director Neutral 52.5 - 0.00% ✗ -
Feb 6, 2020 KENNEDY MELISSA Other Neutral 52.5 - 0.00% ✗ -
Feb 6, 2020 GOULET JACQUES JR Other Neutral 52.5 - 0.00% ✗ -
Jan 15, 2020 Tarantino Frank L Other Neutral 52.5 - 0.00% ✗ -
Feb 5, 2019 GEREMIA CAROL W. President Neutral 52.5 - 0.00% ✗ -
Jan 10, 2019 JONES PETER DARRELL Director Neutral 52.5 - 0.00% ✗ -
Jan 10, 2019 MALONEY EDWARD M. Officer of Advisor Neutral 52.5 - 0.00% ✗ -
Jan 8, 2019 KILMAN JAMES W. Director Neutral 52.5 - 0.00% ✗ -
Jun 28, 2018 GUNNING DAVID H Director Neutral 52.5 - 0.00% ✗ -
Dec 11, 2017 Freyne Colm J Other Neutral 52.5 - 0.00% ✗ -
Nov 30, 2017 Polebaum Mark N Secretary Neutral 52.5 - 0.00% ✗ -
Jun 21, 2017 Butler Robert Ellsworth Director Neutral 52.5 - 0.00% ✗ -
Jun 21, 2017 Uek Robert W Director Neutral 52.5 - 0.00% ✗ -
Jun 21, 2017 GUTOW WILLIAM R Director Neutral 52.5 - 0.00% ✗ -
Jun 16, 2017 Strain Kevin D Other Neutral 52.5 - 0.00% ✗ -
Jun 15, 2017 Collins Kristin V Assistant Secretary Neutral 52.5 - 0.00% ✗ -
Mar 29, 2017 CAROSELLI JOHN A Director Neutral 52.5 - 0.00% ✗ -
Mar 24, 2017 OTIS CLARENCE JR Director Neutral 52.5 - 0.00% ✗ -
Mar 10, 2017 Hardin Heidi Secretary Neutral 52.5 - 0.00% ✗ -
Dec 27, 2016 Bohane Christopher R. Assistant Secretary Neutral 52.5 - 0.00% ✗ -
Apr 14, 2016 NEWTON SUSAN S Assistant Secretary Neutral 52.5 - 0.00% ✗ -
Apr 6, 2016 CITIGROUP INC 10% Owner Neutral 52.5 - 0.00% ✗ -
Mar 24, 2016 Apr 6, 2016 CITIGROUP INC 10% Owner Sell 15.0 -2,844 -100.00% ✗ $71.1M
Dec 1, 2015 Fagan Timothy M Officer of Adviser Neutral 52.5 - 0.00% ✗ -
Sep 15, 2015 Collins Kristin V Assistant Secretary Neutral 52.5 - 0.00% ✗ -
Jul 21, 2015 WOLIN MARTIN J Chief Compliance Officer Neutral 52.5 - 0.00% ✗ -
Jan 8, 2015 Beatty Kevin Advisor Officer Neutral 52.5 - 0.00% ✗ -
Dec 24, 2014 Bogart Thomas A Officer of Advisor Neutral 52.5 - 0.00% ✗ -
Jun 27, 2014 Peacher Stephen Clarkson Other Neutral 52.5 - 0.00% ✗ -
Jun 13, 2014 SHERRATT J DALE Director Neutral 52.5 - 0.00% ✗ -
May 7, 2014 Roepke Maryanne L Director Neutral 52.5 - 0.00% ✗ -
Feb 20, 2014 Buller Steven E Director Neutral 52.5 - 0.00% ✗ -
Jan 10, 2014 STELMACH ROBIN A Director Neutral 52.5 - 0.00% ✗ -
Jul 10, 2013 CONNORS THOMAS H Assistant Secretary Neutral 52.5 - 0.00% ✗ -
Apr 30, 2013 Connor Dean A Other Neutral 52.5 - 0.00% ✗ -
Jan 18, 2013 MOYNIHAN ELLEN Assistant Treasurer Neutral 52.5 - 0.00% ✗ -
Sep 12, 2012 Sep 14, 2012 CITIGROUP INC 10% Owner Buy 100.0 +1,529 116.27% ✗ $39.9M
Jul 2, 2012 POZEN ROBERT C Director Neutral 52.5 - 0.00% ✗ -
Jul 2, 2012 DWYER MARIA F President Neutral 52.5 - 0.00% ✗ -
Apr 3, 2012 BEAULIEU MARTIN Other Neutral 52.5 - 0.00% ✗ -
Mar 29, 2012 Freyne Colm J Other Neutral 52.5 - 0.00% ✗ -
Mar 1, 2012 MYKRANTZ DONALD M Other Neutral 52.5 - 0.00% ✗ -
Jan 4, 2012 Fagan Timothy M Other Neutral 52.5 - 0.00% ✗ -
Jan 3, 2012 DiLorenzo David L Treasurer Neutral 52.5 - 0.00% ✗ -