Fust Matthew K

Director · CRNX, ATRA, NMRA, RARE

As of 2026-09-16, Fust Matthew K has 46 Form 4 transactions on record across 4 companies — 16 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: $548KIndirect: $0$548Kas of 2026-09-16
  • Direct $548K
  • Indirect $0
ATRAdirect30,188 sh$305K
RAREdirect14,058 sh$181K
NMRAdirect80,000 sh$62K

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

NMRA · 26 trades
2026-05-27: Award / grant, 80,000 sh ($0)2025-05-28: Award / grant, 80,000 sh ($0)2025-05-28: Award / grant, 27,802 sh2025-05-28: Disposition, 85,586 sh2025-05-28: Disposition, 27,802 sh2025-05-28: Disposition, 28,571 sh2025-05-28: Award / grant, 85,586 sh2025-05-28: Award / grant, 27,802 sh2025-05-28: Award / grant, 28,571 sh2025-05-28: Disposition, 85,586 sh2025-05-28: Disposition, 28,571 sh2025-05-28: Award / grant, 28,571 sh2025-05-28: Disposition, 27,802 sh2025-05-28: Award / grant, 85,586 sh2025-02-13: Award / grant, 27,802 sh2025-02-13: Award / grant, 85,586 sh2025-02-13: Disposition, 28,571 sh2025-02-13: Disposition, 27,802 sh2025-02-13: Disposition, 85,586 sh2025-02-13: Award / grant, 28,571 sh2025-02-13: Award / grant, 27,802 sh2025-02-13: Award / grant, 85,586 sh2025-02-13: Disposition, 28,571 sh2025-02-13: Disposition, 85,586 sh2025-02-13: Disposition, 27,802 sh2025-02-13: Award / grant, 28,571 sh
CRNX · 14 trades
2026-09-01: Disposition, 22,836 sh ($1.9M)2026-09-01: Disposition, 17,500 sh ($1.1M)2026-09-01: Disposition, 10,350 sh ($545K)2026-09-01: Disposition, 5,925 sh ($504K)2026-09-01: Disposition, 12,500 sh ($504K)2026-09-01: Disposition, 9,730 sh ($478K)2026-09-01: Disposition, 2,092 sh ($174K)2026-06-18: Award / grant, 9,730 sh ($0)2026-06-18: Award / grant, 5,925 sh ($0)2025-09-26: Sale, 16,000 sh ($716K)2025-09-26: Option exercise, 10,000 sh ($19K)2025-09-26: Option exercise, 10,000 sh ($0)2025-06-11: Award / grant, 10,350 sh ($0)2025-06-11: Award / grant, 6,900 sh ($0)
RARE · 4 trades
2026-05-14: Award / grant, 7,751 sh ($0)2026-05-14: Award / grant, 14,058 sh ($0)2025-05-15: Award / grant, 5,740 sh ($0)2025-05-15: Award / grant, 10,787 sh ($0)
ATRA · 2 trades
2026-06-09: Award / grant, 12,000 sh ($0)2025-06-10: Award / grant, 7,828 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2025-09-26CRNXSale16,000 @ $44.75$716K−41.2% of holding22,836Form 4
45 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-09-01CRNXDisposition22,8365,925Form 4
2026-09-01CRNXDisposition17,5000Form 4
2026-09-01CRNXDisposition10,3500Form 4
2026-09-01CRNXDisposition5,9250Form 4
2026-09-01CRNXDisposition12,5000Form 4
2026-09-01CRNXDisposition9,7300Form 4
2026-09-01CRNXDisposition2,0920Form 4
2026-06-18CRNXAward / grant9,7309,730Form 4
2026-06-18CRNXAward / grant5,92528,761Form 4
2026-06-09ATRAAward / grant12,00030,188Form 4
2026-05-27NMRAAward / grant80,00080,000Form 4
2026-05-14RAREAward / grant7,75133,696Form 4
2026-05-14RAREAward / grant14,05814,058Form 4
2025-09-26CRNXOption exercise10,00038,836Form 4
2025-09-26CRNXOption exercise10,0002,092Form 4
2025-06-11CRNXAward / grant10,35010,350Form 4
2025-06-11CRNXAward / grant6,90028,836Form 4
2025-06-10ATRAAward / grant7,82818,188Form 4
2025-05-28NMRAAward / grant80,00080,000Form 4
2025-05-28NMRAAward / grant27,80227,802Form 4
2025-05-28NMRADisposition85,5860Form 4
2025-05-28NMRADisposition27,8020Form 4
2025-05-28NMRADisposition28,5710Form 4
2025-05-28NMRAAward / grant85,58685,586Form 4
2025-05-28NMRAAward / grant27,80227,802Form 4
2025-05-28NMRAAward / grant28,57128,571Form 4
2025-05-28NMRADisposition85,5860Form 4
2025-05-28NMRADisposition28,5710Form 4
2025-05-28NMRAAward / grant28,57128,571Form 4
2025-05-28NMRADisposition27,8020Form 4
2025-05-28NMRAAward / grant85,58685,586Form 4
2025-05-15RAREAward / grant5,74025,945Form 4
2025-05-15RAREAward / grant10,78710,787Form 4
2025-02-13NMRAAward / grant27,80227,802Form 4
2025-02-13NMRAAward / grant85,58685,586Form 4
2025-02-13NMRADisposition28,5710Form 4
2025-02-13NMRADisposition27,8020Form 4
2025-02-13NMRADisposition85,5860Form 4
2025-02-13NMRAAward / grant28,57128,571Form 4
2025-02-13NMRAAward / grant27,80227,802Form 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.