X0609 4 2026-04-20 0 0001902314 M-tron Industries, Inc. MPTI 0001233348 GABELLI MARC false 189 MASON STREET GREENWICH CT 06830 1 0 0 0 0 Common Stock 2026-04-20 4 X 0 3276 59 A 45840 D Subscription Rights (right to purchase) 59 2026-04-20 4 X 0 16380 0 D 2026-03-31 2026-04-20 Common Stock 3276 0 D On March 30, 2026, holders of the Issuer's common stock, par value $0.01 per share (the "Common Stock"), received one subscription right (the "Rights") for each share of Common Stock held by such holder as of March 27, 2026. When exercisable, five (5) Rights entitle their holder to purchase one share of Common Stock at an exercise price of $59.00 per share. /s/ Marc Gabelli 2026-04-28