Michael J. Karber
CIK 1796257 · General Counsel and Secretary · last filed 2026-04-08
"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.
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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 · Page 2 of 3
24 filingsInsider 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 |
|---|---|---|---|---|---|
| 2024-03-19 | GPMT | Mixed | +10,692 | -$40.8K | EDGAR |
| 2024-03-05 | GPMT | Grant (A) | — | $0 | EDGAR |
| 2024-02-20 | GPMT | Mixed | +4,118 | -$19.1K | EDGAR |
| 2024-01-04 | GPMT | Mixed | +3,621 | -$21.2K | EDGAR |
| 2023-03-17 | GPMT | Grant (A) | — | $0 | EDGAR |
| 2023-02-17 | GPMT | Mixed | +4,158 | -$24.6K | EDGAR |
| 2023-01-30 | GPMT | Tax (F) | −1,702 | -$10.9K | EDGAR |
| 2023-01-04 | GPMT | Mixed | +3,621 | -$19.1K | EDGAR |
| 2022-02-18 | GPMT | Grant (A) | — | $0 | EDGAR |
| 2022-01-31 | GPMT | Tax (F) | −2,383 | -$28.5K | EDGAR |
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.
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.