Kauffman Michael

Director · Officer · KZR, VSTM, ACET

As of 2026-09-27, Kauffman Michael has 30 Form 4 transactions on record across 3 companies — 10 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: $1.8MIndirect: $0$1.8Mas of 2026-09-27
  • Direct $1.8M
  • Indirect $0
VSTMdirect200,000 sh$1.5M
ACETdirect26,400 sh$238K

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

KZR · 9 trades
2026-05-11: Disposition, 3,500 sh ($0)2026-05-11: Disposition, 389 sh ($0)2026-05-11: Disposition, 2,600 sh ($0)2026-05-11: Disposition, 889 sh ($0)2026-05-11: Disposition, 5,000 sh ($0)2026-05-11: Code U, 6,369 sh2026-05-11: Code U, 6,369 sh2025-06-18: Award / grant, 5,000 sh ($0)2024-06-20: Award / grant, 50,000 sh ($0)
VSTM · 9 trades
2026-01-06: Award / grant, 200,000 sh ($0)2025-11-21: Sale, 8,550 sh ($86K)2025-05-22: Award / grant, 8,333 sh ($0)2025-05-22: Award / grant, 12,500 sh ($0)2024-06-18: Award / grant, 12,500 sh ($0)2024-06-18: Award / grant, 8,333 sh ($0)2024-03-11: Disposition, 2,083 sh2024-03-11: Disposition, 1,497 sh2024-03-11: Award / grant, 16,078 sh
ACET · 9 trades
2024-08-21: Disposition, 37,000 sh ($0)2024-08-21: Award / grant, 26,400 sh ($0)2024-08-21: Disposition, 26,400 sh ($0)2024-08-21: Award / grant, 18,500 sh ($0)2024-08-21: Disposition, 18,500 sh ($0)2024-08-21: Award / grant, 37,000 sh ($0)2024-06-05: Sale, 5,900 sh ($8K)2024-06-05: Award / grant, 5,900 sh ($0)2024-06-05: Award / grant, 26,400 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2025-11-21VSTMSale8,550 @ $10.00$86K−49.7% of holding8,666Form 4
2024-06-05ACETSale5,900 @ $1.43$8K−50.0% of holding5,900Form 4
28 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-06-12—Award / grant7,0007,000Form 4
2026-05-11KZRDisposition3,5000Form 4
2026-05-11KZRDisposition3890Form 4
2026-05-11KZRDisposition2,6000Form 4
2026-05-11KZRDisposition8890Form 4
2026-05-11KZRDisposition5,0000Form 4
2026-05-11KZRCode U6,3690Form 4
2026-05-11KZRCode U6,3690Form 4
2026-01-06VSTMAward / grant200,000200,000Form 4
2025-06-18KZRAward / grant5,0005,000Form 4
2025-06-04—Award / grant120,000120,000Form 4
2025-06-04—Award / grant70,00070,000Form 4
2025-05-22VSTMAward / grant8,33317,216Form 4
2025-05-22VSTMAward / grant12,50012,500Form 4
2024-08-21ACETDisposition37,0000Form 4
2024-08-21ACETAward / grant26,40026,400Form 4
2024-08-21ACETDisposition26,4000Form 4
2024-08-21ACETAward / grant18,50018,500Form 4
2024-08-21ACETDisposition18,5000Form 4
2024-08-21ACETAward / grant37,00037,000Form 4
2024-06-20KZRAward / grant50,00050,000Form 4
2024-06-18VSTMAward / grant12,50012,500Form 4
2024-06-18VSTMAward / grant8,3338,883Form 4
2024-06-05ACETAward / grant5,90011,800Form 4
2024-06-05ACETAward / grant26,40026,400Form 4
2024-03-11VSTMDisposition2,0830Form 4
2024-03-11VSTMDisposition1,4970Form 4
2024-03-11VSTMAward / grant16,07816,078Form 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.