JOHN WINTHROP

Corporate Board Profile

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PIONEER HIGH INCOME FUND, INC.

Filing Date	Source Excerpt
2003-09-17	President, John Winthrop & Co., Inc. (private investment firm)
2004-10-06	President, John Winthrop & Co., Inc. (private investment firm)
2005-07-11	President, John Winthrop & Co., Inc. (private investment firm)
2006-08-08	President, John Winthrop & Co., Inc. (private investment firm)
2007-08-02	President, John Winthrop & Co., Inc. (private investment firm)

PIONEER MUNICIPAL HIGH INCOME ADVANTAGE FUND, INC.

Filing Date	Source Excerpt
2004-10-06	President, John Winthrop & Co., Inc. (private investment firm)
2005-07-11	President, John Winthrop & Co., Inc. (private investment firm)
2006-08-08	President, John Winthrop & Co., Inc. (private investment firm)
2007-08-02	President, John Winthrop & Co., Inc. (private investment firm)

PIONEER MUNICIPAL HIGH INCOME FUND, INC.

Filing Date	Source Excerpt
2004-10-06	President, John Winthrop & Co., Inc. (private investment firm)
2005-07-11	President, John Winthrop & Co., Inc. (private investment firm)
2006-08-08	President, John Winthrop & Co., Inc. (private investment firm)
2007-08-02	President, John Winthrop & Co., Inc. (private investment firm)

Data sourced from SEC filings. Last updated: 2026-02-03