MSC Adviser I, LLC

Houston – October 12, 2026 -- MSC Income Fund (NYSE: MSIF) plans to hand the CEO role to Nicholas T. Meserve in the fourth quarter of 2026, while Dwayne L. Hyzak, Chairman and CEO since October 2020, stays on as Executive Chairman.

Hyzak to work alongside Meserve as Executive Chairman

Hyzak will work closely with Meserve in his Executive Chairman capacity. The Fund's board of directors designed the transition as part of its long-term succession plan. The timing is described as presently planned, so it remains subject to change.

Meserve has led private loan strategy since the Fund's inception

Meserve is a Managing Director of MSC Income and group head of its private credit investment team. He has held the Managing Director role since 2020. Earlier, he served on the Fund's Board from 2016 until 2020.

Houston – October 12, 2026 -- MSC Income Fund (NYSE: MSIF) will pay regular monthly dividends of $0.11 per share for each of October, November and December 2026, totaling $0.33 per share for the fourth quarter, after its Board of Directors approved the payouts.

Board adds $0.03 supplemental dividend for December payment

The board also declared a supplemental cash dividend of $0.03 per share, payable in December 2026. Combined with the regular monthly payments, the fourth-quarter distribution comes to $0.36 per share.

The supplemental payment will come from the Fund's undistributed taxable income, defined as taxable income in excess of dividends paid, as of June 30, 2026.