| Date Filed | Type | Description |
| 10/03/2023 |
SC 13G/A
| Saba Capital Management, L.P. reports a 10.4% stake in PIONEER MUNICIPAL HIGH INCOME FUND, INC |
| 09/26/2023 |
NPORT-P
| Form NPORT-P - Monthly Portfolio Investments Report on Form N-PORT (Public): |
| 08/18/2023 |
DEFA14A
| Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material: |
| 08/11/2023 |
DEFA14A
| Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material: |
| 08/09/2023 |
DEFA14A
| Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material: |
| 07/26/2023 |
DEF 14A
| Form DEF 14A - Other definitive proxy statements: |
| 07/13/2023 |
N-CEN
| Form N-CEN - Annual Report for Registered Investment Companies: |
| 07/07/2023 |
N-CSR
| Form N-CSR - Certified Shareholder Report: |
| 06/07/2023 |
SC 13D
| BANK OF AMERICA CORP reports a 100% stake in PIONEER MUNICIPAL HIGH INCOME FUND, INC. |
| 06/01/2023 |
SC 13D/A
| WELLS FARGO & COMPANY reports a 0% stake in PIONEER MUNICIPAL HIGH INCOME FUND, INC. |
| 03/23/2023 |
SC 13D/A
| WELLS FARGO & COMPANY reports a 100% stake in PIONEER MUNICIPAL HIGH INCOME FUND, INC. |
| 03/22/2023 |
NPORT-P
| Form NPORT-P - Monthly Portfolio Investments Report on Form N-PORT (Public): |
| 02/14/2023 |
SC 13G
| RIVERNORTH CAPITAL MANAGEMENT, LLC reports a 6% stake in Pioneer Municipal High Income Fund, Inc. |
| 02/10/2023 |
SC 13G
| MORGAN STANLEY reports a 6.6% stake in PIONEER MUNICIPAL HIGH INCOME FUND, INC. |
| 01/13/2023 |
SC 13G/A
| FIRST TRUST PORTFOLIOS LP reports a 6% stake in Pioneer Municipal High Income Fund, Inc. |
| 01/04/2023 |
N-CSRS
| Form N-CSRS - Certified Shareholder Report, Semi-Annual: |
| 12/21/2022 |
NPORT-P
| Form NPORT-P - Monthly Portfolio Investments Report on Form N-PORT (Public): |
| 11/16/2022 |
SC 13D/A
| Form SC 13D/A - General statement of acquisition of beneficial ownership: [Amend] |
| 09/23/2022 |
NPORT-P
| Form NPORT-P - Monthly Portfolio Investments Report on Form N-PORT (Public): |
| 09/15/2022 |
40-17G
| Form 40-17G - Fidelity Bond [Rule 17G-1(g)]: |
| 08/26/2022 |
N-PX
| Form N-PX - Annual Report of proxy voting record of management investment companies: |
| 08/22/2022 |
DEFA14A
| Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material: |
| 08/12/2022 |
DEFA14A
| Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material: |
| 08/12/2022 |
DEFA14A
| Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material: |
| 08/10/2022 |
SC 13G/A
| Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend] |
| 07/29/2022 |
DEF 14A
| Form DEF 14A - Other definitive proxy statements: |
| 07/12/2022 |
N-CEN
| Form N-CEN - Annual Report for Registered Investment Companies: |
| 07/01/2022 |
N-CSR
| Form N-CSR - Certified Shareholder Report: |
| 06/23/2022 |
NPORT-P
| Form NPORT-P - Monthly Portfolio Investments Report on Form N-PORT (Public): |
| 03/30/2022 |
NPORT-P
| Form NPORT-P - Monthly Portfolio Investments Report on Form N-PORT (Public): |
| 01/18/2022 |
SC 13G/A
| FIRST TRUST PORTFOLIOS LP reports a 14.3% stake in Pioneer Municipal High Income Fund, Inc. |
| 01/03/2022 |
N-CSRS
| Form N-CSRS - Certified Shareholder Report, Semi-Annual: |
| 12/23/2021 |
NPORT-P
| Form NPORT-P - Monthly Portfolio Investments Report on Form N-PORT (Public): |
| 09/29/2021 |
NPORT-P
| Form NPORT-P - Monthly Portfolio Investments Report on Form N-PORT (Public): |
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