Michael J. Karber

CIK 1796257 · General Counsel and Secretary · last filed 2026-04-08

Michael J. Karber is a General Counsel and Secretary who has filed 24 SEC Form 4 insider transactions across 1 company since 2020. The most recent filing, for GPMT, was dated Apr 8, 2026. Across all open-market trades the lifetime net is −$37.9K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $178.0K across reported positions.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

Disclosed Exposure

$178.0K

Companies

1

Total Filings

24

Lifetime Open-Market Net

-$37.9K

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.

Symbol	Role	Shares	Price	Disclosed Exposure	Lifetime OM Net	Filings	Latest Filed
GPMT	General Counsel and Secretary	132,823	$1.34	$178.0K	-$37.9K	24	2026-04-08

Recent Filings

24 filings

Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.

Filed	Symbol	Action	Net Shares	Net $	Link
2026-04-08	GPMT	Grant (A)	—	$0	EDGAR
2026-03-16	GPMT	Mixed	+9,761	-$14.8K	EDGAR
2026-03-06	GPMT	Mixed	+1,788	-$2.9K	EDGAR
2026-03-02	GPMT	Mixed	+27,524	-$56.9K	EDGAR
2026-01-02	GPMT	Mixed	+16,527	-$38.6K	EDGAR
2025-06-09	GPMT	Grant (A)	—	$0	EDGAR
2025-03-17	GPMT	Mixed	+9,761	-$26.7K	EDGAR
2025-03-03	GPMT	Mixed	+10,233	-$36.3K	EDGAR
2025-02-18	GPMT	Mixed	+4,119	-$11.8K	EDGAR
2024-06-21	GPMT	Grant (A)	—	$0	EDGAR

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Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.