Form 4 for MPTI M-tron Industries, Inc.

Accepted 2026-01-08 00:00:00 ET · period of report 2026-01-06 · accession 0001437749-26-000901 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X	Filed	Traded	Ticker	Insider	Title	Type	Price	Qty	Owned	ΔOwn	Value
D	2026-01-08	2026-01-06	MPTI	Arteaga Ivan	Dir	X - OptEx	$47.50	+35	873	+4%	+$1,662
D	2026-01-08	2026-01-06	MPTI	Arteaga Ivan	Dir	X - OptEx	$0.00	+360	4	New	$0

Purchase Sale Sale after option exercise All abbreviations

#	Table	Security	Date	Code	A/D	Shares	Price	Owned after	Own	Exercise / expiry	Underlying	Footnotes
1	Common	Common Stock	2026-01-06	X	A	35	$47.50	873	D	—	—	(F1) On April 25, 2025, holders of the Issuer's Common Stock, par value $0.01 per share (the "Common Stock"), received a dividend of one Common Stock Warrant (the "Warrants") for each share of Common Stock held by such holder as of March 10, 2025. When exercisable, five (5) Warrants will entitle their holder to purchase one share of Common Stock at an exercise price of $47.50 per share, as may be adjusted in accordance with the terms of the Warrants. Each warrant holder could also elect to purchase additional shares of Common Stock at the exercise price if other warrant holders did not fully exercise their warrants and the warrant holder exercised in full their basic warrants (the "Over-Subscription Privilege"). The shares shown on this Form 4 are the additional shares purchased pursuant to the Over-Subscription Privilege, the amount of which was not determinable prior to the closing of the warrant offering.
2	Derivative	Common Stock Warrants (right to purchase)	2026-01-06	X	A	360	$0.00	4	D	$47.50 · 2025-10-23 to 2025-12-23	72 Common Stock