Chemnitz Gregory R.

Officer · MTRN

As of 2026-09-16, Chemnitz Gregory R. has 48 Form 4 transactions on record across 1 company — 30 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: $881KIndirect: $0$881Kas of 2026-09-16
  • Direct $881K
  • Indirect $0
MTRNdirect3,547 sh$881K

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

MTRN · 48 trades
2026-09-04: Award / grant, 2 sh ($0)2026-06-12: Award / grant, 2 sh ($0)2026-03-09: Withheld for tax, 5 sh ($721)2026-03-06: Award / grant, 4 sh ($0)2026-03-06: Award / grant, 5 sh ($0)2026-03-03: Withheld for tax, 4,445 sh ($699K)2026-03-03: Sale, 3,434 sh ($540K)2026-03-03: Option exercise, 3,040 sh ($344K)2026-03-03: Option exercise, 1,471 sh ($199K)2026-03-03: Sale, 1,083 sh ($171K)2026-03-03: Option exercise, 1,017 sh ($89K)2026-03-03: Option exercise, 1,017 sh ($0)2026-03-03: Option exercise, 3,040 sh ($0)2026-03-03: Option exercise, 1,471 sh ($0)2026-03-02: Withheld for tax, 1,211 sh ($202K)2026-03-01: Option exercise, 2,003 sh ($0)2026-03-01: Option exercise, 2,003 sh ($0)2026-03-01: Award / grant, 2,265 sh ($0)2026-03-01: Award / grant, 1,479 sh ($0)2026-02-17: Sale, 4,000 sh ($628K)2026-02-12: Award / grant, 2,196 sh ($0)2026-01-31: Award / grant, 98 sh ($0)2025-12-05: Award / grant, 4 sh ($0)2025-11-04: Withheld for tax, 1,796 sh ($203K)2025-11-04: Option exercise, 2,254 sh ($182K)2025-11-04: Withheld for tax, 1,053 sh ($119K)2025-11-04: Option exercise, 1,459 sh ($100K)2025-11-04: Sale, 864 sh ($98K)2025-11-04: Option exercise, 1,459 sh ($0)2025-11-04: Option exercise, 2,254 sh ($0)2025-09-05: Award / grant, 5 sh ($0)2025-08-04: Sale, 2,082 sh ($219K)2025-08-04: Sale, 918 sh ($96K)2025-06-13: Award / grant, 7 sh ($0)2025-05-05: Sale, 939 sh ($76K)2025-05-05: Sale, 930 sh ($74K)2025-05-05: Sale, 130 sh ($11K)2025-05-05: Sale, 1 sh ($83)2025-03-10: Withheld for tax, 6 sh ($533)2025-03-07: Award / grant, 8 sh ($0)2025-03-07: Award / grant, 7 sh ($0)2025-03-03: Withheld for tax, 1,356 sh ($118K)2025-03-01: Award / grant, 2,068 sh ($0)2025-03-01: Option exercise, 2,679 sh ($0)2025-03-01: Option exercise, 2,679 sh ($0)2025-03-01: Award / grant, 3,051 sh ($0)2025-02-13: Award / grant, 2,020 sh ($0)2024-12-06: Award / grant, 6 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-03-03MTRNSale3,434 @ $157.26$540K−36.7% of holding5,930Form 4
2026-03-03MTRNSale1,083 @ $157.51$171K−10.4% of holding9,364Form 4
2026-02-17MTRNSale4,000 @ $157.09$628K−31.8% of holding8,572Form 4
2025-11-04MTRNSale864 @ $113.23$98K−7.7% of holding10,376Form 4
2025-08-04MTRNSale2,082 @ $105.40$219K−16.7% of holding10,376Form 4
2025-08-04MTRNSale918 @ $104.65$96K−6.9% of holding12,458Form 4
2025-05-05MTRNSale939 @ $80.86$76K−6.5% of holding13,507Form 4
2025-05-05MTRNSale930 @ $79.85$74K−6.0% of holding14,446Form 4
2025-05-05MTRNSale130 @ $81.70$11K−1.0% of holding13,377Form 4
2025-05-05MTRNSale1 @ $83.33$83−0.0% of holding13,376Form 4
38 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-09-04MTRNAward / grant23,547Form 4
2026-06-12MTRNAward / grant23,545Form 4
2026-03-09MTRNWithheld for tax55,930Form 4
2026-03-06MTRNAward / grant43,543Form 4
2026-03-06MTRNAward / grant55,935Form 4
2026-03-03MTRNWithheld for tax4,44510,447Form 4
2026-03-03MTRNOption exercise3,04012,404Form 4
2026-03-03MTRNOption exercise1,47113,875Form 4
2026-03-03MTRNOption exercise1,01714,892Form 4
2026-03-03MTRNOption exercise1,0172,034Form 4
2026-03-03MTRNOption exercise3,0400Form 4
2026-03-03MTRNOption exercise1,471736Form 4
2026-03-02MTRNWithheld for tax1,2119,364Form 4
2026-03-01MTRNOption exercise2,0032,060Form 4
2026-03-01MTRNOption exercise2,00310,575Form 4
2026-03-01MTRNAward / grant2,2652,265Form 4
2026-03-01MTRNAward / grant1,4793,539Form 4
2026-02-12MTRNAward / grant2,19612,572Form 4
2026-01-31MTRNAward / grant984,063Form 4
2025-12-05MTRNAward / grant43,965Form 4
2025-11-04MTRNWithheld for tax1,79611,240Form 4
2025-11-04MTRNOption exercise2,25413,036Form 4
2025-11-04MTRNWithheld for tax1,05310,782Form 4
2025-11-04MTRNOption exercise1,45911,835Form 4
2025-11-04MTRNOption exercise1,4590Form 4
2025-11-04MTRNOption exercise2,2540Form 4
2025-09-05MTRNAward / grant53,961Form 4
2025-06-13MTRNAward / grant73,956Form 4
2025-03-10MTRNWithheld for tax615,376Form 4
2025-03-07MTRNAward / grant815,382Form 4
2025-03-07MTRNAward / grant73,949Form 4
2025-03-03MTRNWithheld for tax1,35615,374Form 4
2025-03-01MTRNAward / grant2,0683,942Form 4
2025-03-01MTRNOption exercise2,6791,874Form 4
2025-03-01MTRNOption exercise2,67916,730Form 4
2025-03-01MTRNAward / grant3,0513,051Form 4
2025-02-13MTRNAward / grant2,02014,051Form 4
2024-12-06MTRNAward / grant64,553Form 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.