Company · Ownership research

M-tron Industries, Inc. MPTI

CIK 0001902314

Form 4 transactions dated Nov 1, 2023 to Nov 10, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

Insider filings on file run through Aug 19, 2026.

Some filings are submitted jointly by several insiders. The SEC form does not apportion the reported figures between them, so results include every joint filer.

Insider purchases & sales

Purchased: $42.38K
Sold: $13.16M

Nov 1, 2023 – Aug 19, 2026
Available records · partial months are marked ·

2023, from Nov 1, 202310 of 17 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
Dec 22, 2023	GABELLI MARC · EMG MADONNA EDUCATIONAL FOUNDATION INC. Director · 10% owner	Sale	$338.94K 10,000 shares sold	Unavailable Direct holding	▾
Dec 21, 2023	GABELLI MARC · EMG MADONNA EDUCATIONAL FOUNDATION INC. Director	Sale	$76.70K 2,300 shares sold	Unavailable Direct holding	▾
Dec 15, 2023	GABELLI MARC · EMG MADONNA EDUCATIONAL FOUNDATION INC. Director · 10% owner	Sale	$25.94K 931 shares sold	Unavailable Direct holding	▾
Dec 14, 2023	GABELLI MARC · EMG MADONNA EDUCATIONAL FOUNDATION INC. Director · 10% owner	Sale	$698.86K 25,257 shares sold	Unavailable Direct holding	▾
Dec 11, 2023	FERRANTINO MICHAEL J JR Chief Executive Officer · Director	Sale	$109.96K 3,500 shares sold	15.14% sold Direct holding	▾
Dec 8, 2023	GABELLI MARC · EMG MADONNA EDUCATIONAL FOUNDATION INC. Director · 10% owner	Sale	$194.14K 6,130 shares sold	Unavailable Direct holding	▾
Dec 6, 2023	GABELLI MARC · EMG MADONNA EDUCATIONAL FOUNDATION INC. Director · 10% owner	Sale	$359.44K 10,287 shares sold	Unavailable Direct holding	▾
Dec 5, 2023	GABELLI MARC · EMG MADONNA EDUCATIONAL FOUNDATION INC. Director · 10% owner	Sale	$990.13K 27,895 shares sold	Unavailable Direct holding	▾
Dec 5, 2023	Arteaga Ivan Director	Sale	$72.26K 2,000 shares sold	50.00% sold Direct holding	▾
Dec 4, 2023	Arteaga Ivan Director	Sale	$257.50K 7,274 shares sold	64.52% sold Direct holding	▾

Showing 17 / 17 record groups in 2023. The complete set is available through the API.

M-tron Industries, Inc. · MPTI

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The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 17 of 17 purchase / sale groups and 12 of 12 other groups; the totals and the monthly series cover the whole window.

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{"action":"list","ticker":"MPTI","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Share totals are on today's split-adjusted basis. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.