Skip to main content
Signal8
Launch Terminal

M-tron Industries, Inc. (MPTI)

M-tron Industries, Inc. (MPTI) Insider Trading

Directors, officers and holders of more than 10% of MPTI report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.

Recent Form 4 transactions

The 50 most recent of 89 transactions on file: 0 with code P, 12 with code S and 38 with other codes.

DateInsiderCodeShares
Aug 11, 2026Biles Linda MS Sale1,218
May 4, 2026Drafts William ArnoldS Sale361
May 4, 2026Biles Linda MS Sale306
May 4, 2026Pforr CameronS Sale840
Apr 29, 2026Pforr CameronM Exercise220
Apr 29, 2026Pforr CameronM Exercise220
Apr 28, 2026Pforr CameronM Exercise220
Apr 28, 2026Pforr CameronM Exercise220
Apr 27, 2026Arteaga IvanX In-the-Money24
Apr 20, 2026GABELLI MARCX In-the-Money3,276
Apr 20, 2026Susanto HendiX In-the-Money5,355
Apr 20, 2026GABELLI MARCX In-the-Money16,380
Apr 20, 2026Susanto HendiX In-the-Money1,071
Apr 14, 2026Susanto HendiX In-the-Money454
Apr 14, 2026Biles Linda MS Sale720
Apr 14, 2026Biles Linda MS Sale2,700
Apr 14, 2026Drafts William ArnoldS Sale540
Apr 14, 2026Biles Linda MS Sale2,700
Apr 14, 2026Susanto HendiX In-the-Money2,274
Apr 13, 2026Arteaga IvanX In-the-Money870
Apr 13, 2026Drafts William ArnoldS Sale7,609
Apr 10, 2026Arteaga IvanX In-the-Money174
Apr 9, 2026Biles Linda MS Sale24,643
Apr 7, 2026Pforr CameronX In-the-Money100
Apr 7, 2026Pforr CameronS Sale21,500
Apr 7, 2026Pforr CameronX In-the-Money500
Apr 6, 2026Drafts William ArnoldS Sale3,600
Apr 2, 2026Drafts William ArnoldA Award2,428
Apr 2, 2026Pforr CameronA Award5,646
Apr 2, 2026Biles Linda MA Award2,059
Mar 19, 2026Goldman David MA Award250
Mar 19, 2026LaPenta Robert V JrA Award250
Mar 19, 2026LAZAR BELA Award250
Mar 19, 2026Mega John SA Award250
Mar 19, 2026Susanto HendiA Award250
Mar 19, 2026Drafts William ArnoldA Award2,928
Mar 19, 2026GABELLI MARCA Award250
Mar 19, 2026Arteaga IvanA Award250
Mar 19, 2026Biles Linda MA Award1,614
Mar 19, 2026Pforr CameronA Award3,923
Jan 6, 2026Arteaga IvanX In-the-Money36
Jan 6, 2026Arteaga IvanX In-the-Money360
Dec 23, 2025Drafts William ArnoldX In-the-Money2,700
Dec 23, 2025Goldman David MX In-the-Money335
Dec 23, 2025Susanto HendiX In-the-Money920
Dec 23, 2025Drafts William ArnoldX In-the-Money557
Dec 23, 2025Goldman David MX In-the-Money1,625
Dec 23, 2025Susanto HendiX In-the-Money4,460
Dec 22, 2025Pforr CameronX In-the-Money10,000
Dec 22, 2025Pforr CameronX In-the-Money2,062

The full Form 4 history is on the MPTI company page (Insider Trades card, View all).

Questions about this data

Which insider transactions are open-market trades?

Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.

How quickly are insider trades reported?

A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.

Who has to file Form 4?

Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.

Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.