Karber Michael J.

Officer · GPMT

As of 2026-09-16, Karber Michael J. has 36 Form 4 transactions on record across 1 company — 22 in the trailing 12 months.

Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.

Reconstructed holdings

Direct: $114KIndirect: $0$114Kas of 2026-09-16
  • Direct $114K
  • Indirect $0
GPMTdirect132,823 sh$114K

Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.

Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.

Trades by company

GPMT · 36 trades
2026-03-15: Withheld for tax, 9,452 sh ($15K)2026-03-15: Option exercise, 19,213 sh ($0)2026-03-15: Option exercise, 19,213 sh2026-03-15: Option exercise, 19,213 sh2026-03-05: Withheld for tax, 1,670 sh ($3K)2026-03-05: Award / grant, 73,294 sh ($0)2026-03-05: Award / grant, 3,458 sh ($0)2026-03-01: Withheld for tax, 12,128 sh ($21K)2026-03-01: Option exercise, 22,489 sh ($0)2026-03-01: Option exercise, 22,489 sh2026-03-01: Option exercise, 22,489 sh2026-02-27: Withheld for tax, 20,555 sh ($36K)2026-02-27: Option exercise, 12,831 sh ($0)2026-02-27: Option exercise, 24,887 sh ($0)2026-02-27: Option exercise, 24,887 sh2026-02-27: Option exercise, 12,831 sh2026-02-27: Option exercise, 24,887 sh2026-02-27: Option exercise, 12,831 sh2025-12-31: Withheld for tax, 16,005 sh ($39K)2025-12-31: Option exercise, 32,532 sh ($0)2025-12-31: Option exercise, 32,532 sh2025-12-31: Option exercise, 32,532 sh2025-06-05: Award / grant, 38,494 sh ($0)2025-03-15: Withheld for tax, 9,452 sh ($27K)2025-03-15: Option exercise, 19,213 sh ($0)2025-03-15: Option exercise, 19,213 sh2025-03-15: Option exercise, 19,213 sh2025-03-01: Withheld for tax, 12,256 sh ($36K)2025-03-01: Option exercise, 22,489 sh ($0)2025-03-01: Option exercise, 22,489 sh2025-03-01: Option exercise, 22,489 sh2025-02-27: Award / grant, 74,663 sh ($0)2025-02-16: Withheld for tax, 4,060 sh ($12K)2025-02-16: Option exercise, 8,179 sh ($0)2025-02-16: Option exercise, 8,179 sh2025-02-16: Option exercise, 8,179 sh

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
36 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-03-15GPMTWithheld for tax9,452123,371Form 4
2026-03-15GPMTOption exercise19,2130Form 4
2026-03-15GPMTOption exercise19,213132,823Form 4
2026-03-15GPMTOption exercise19,213132,823Form 4
2026-03-05GPMTWithheld for tax1,670113,610Form 4
2026-03-05GPMTAward / grant73,29473,294Form 4
2026-03-05GPMTAward / grant3,458115,280Form 4
2026-03-01GPMTWithheld for tax12,128111,822Form 4
2026-03-01GPMTOption exercise22,48922,490Form 4
2026-03-01GPMTOption exercise22,489123,950Form 4
2026-03-01GPMTOption exercise22,489123,950Form 4
2026-02-27GPMTWithheld for tax20,555101,461Form 4
2026-02-27GPMTOption exercise12,83125,663Form 4
2026-02-27GPMTOption exercise24,88749,776Form 4
2026-02-27GPMTOption exercise24,887109,185Form 4
2026-02-27GPMTOption exercise12,831122,016Form 4
2026-02-27GPMTOption exercise24,887109,185Form 4
2026-02-27GPMTOption exercise12,831122,016Form 4
2025-12-31GPMTWithheld for tax16,00584,298Form 4
2025-12-31GPMTOption exercise32,5320Form 4
2025-12-31GPMTOption exercise32,532100,303Form 4
2025-12-31GPMTOption exercise32,532100,303Form 4
2025-06-05GPMTAward / grant38,49438,494Form 4
2025-03-15GPMTWithheld for tax9,45267,771Form 4
2025-03-15GPMTOption exercise19,21319,213Form 4
2025-03-15GPMTOption exercise19,21377,223Form 4
2025-03-15GPMTOption exercise19,21377,223Form 4
2025-03-01GPMTWithheld for tax12,25658,010Form 4
2025-03-01GPMTOption exercise22,48944,979Form 4
2025-03-01GPMTOption exercise22,48970,266Form 4
2025-03-01GPMTOption exercise22,48970,266Form 4
2025-02-27GPMTAward / grant74,66374,663Form 4
2025-02-16GPMTWithheld for tax4,06047,777Form 4
2025-02-16GPMTOption exercise8,1790Form 4
2025-02-16GPMTOption exercise8,17951,837Form 4
2025-02-16GPMTOption exercise8,17951,837Form 4

Source: SEC Form 4 filings. Each row links to its original filing.

Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.