Marcus Gail Boxer

Director · NTRA

As of 2026-09-16, Marcus Gail Boxer has 57 Form 4 transactions on record across 1 company — 19 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.

Pattern in the record: open-market sales filed in June in multiple years since 2025 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.

Reconstructed holdings

Direct: $2.7MIndirect: $0$2.7Mas of 2026-09-16
  • Direct $2.7M
  • Indirect $0
NTRAdirect7,852 sh$2.7M

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

NTRA · 57 trades
2026-06-26: Award / grant, 1,571 sh2026-06-26: Award / grant, 98 sh2026-06-26: Award / grant, 1,571 sh2026-06-26: Award / grant, 98 sh2026-06-05: Sale, 4,694 sh ($1.0M)2026-06-05: Sale, 3,174 sh ($692K)2026-06-05: Sale, 3,016 sh ($652K)2026-06-05: Option exercise, 11,000 sh ($251K)2026-06-05: Sale, 116 sh ($25K)2026-06-05: Option exercise, 11,000 sh ($0)2026-04-24: Award / grant, 222 sh2026-04-24: Award / grant, 108 sh2026-04-24: Award / grant, 222 sh2026-04-24: Award / grant, 108 sh2026-01-30: Award / grant, 91 sh2026-01-30: Award / grant, 91 sh2025-11-03: Sale, 122 sh ($24K)2025-10-31: Award / grant, 121 sh2025-10-31: Award / grant, 121 sh2025-08-01: Sale, 1,313 sh ($174K)2025-08-01: Sale, 1,183 sh ($158K)2025-07-25: Award / grant, 141 sh2025-07-25: Award / grant, 141 sh2025-07-01: Sale, 2,651 sh ($444K)2025-07-01: Sale, 1,648 sh ($275K)2025-07-01: Option exercise, 4,299 sh ($105K)2025-07-01: Option exercise, 4,299 sh ($0)2025-06-27: Award / grant, 2,143 sh2025-06-27: Award / grant, 2,143 sh2025-06-27: Award / grant, 271 sh2025-06-27: Award / grant, 271 sh2025-06-10: Sale, 3,400 sh ($559K)2025-06-10: Sale, 600 sh ($99K)2025-05-01: Sale, 1,450 sh ($222K)2025-05-01: Sale, 942 sh ($143K)2025-05-01: Sale, 672 sh ($102K)2025-05-01: Option exercise, 4,000 sh ($98K)2025-05-01: Sale, 341 sh ($51K)2025-05-01: Sale, 323 sh ($48K)2025-05-01: Sale, 241 sh ($36K)2025-05-01: Sale, 31 sh ($5K)2025-05-01: Option exercise, 4,000 sh ($0)2025-04-01: Sale, 1,528 sh ($216K)2025-04-01: Sale, 1,512 sh ($212K)2025-04-01: Option exercise, 2,870 sh ($70K)2025-04-01: Sale, 398 sh ($55K)2025-04-01: Sale, 365 sh ($52K)2025-04-01: Sale, 197 sh ($28K)2025-04-01: Option exercise, 1,130 sh ($9K)2025-04-01: Option exercise, 1,130 sh ($0)2025-04-01: Option exercise, 2,870 sh ($0)2025-03-12: Sale, 1,682 sh ($250K)2025-03-12: Sale, 1,014 sh ($148K)2025-03-12: Sale, 923 sh ($136K)2025-03-12: Sale, 381 sh ($57K)2025-03-12: Option exercise, 4,000 sh ($31K)2025-03-12: Option exercise, 4,000 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-06-05NTRASale4,694 @ $217.30$1.0M−33.1% of holding9,473Form 4
2026-06-05NTRASale3,174 @ $218.11$692K−33.5% of holding6,299Form 4
2026-06-05NTRASale3,016 @ $216.06$652K−17.6% of holding14,167Form 4
2026-06-05NTRASale116 @ $218.81$25K−1.8% of holding6,183Form 4
2025-11-03NTRASale122 @ $198.71$24K−2.1% of holding5,762Form 4
2025-08-01NTRASale1,313 @ $132.73$174K−15.9% of holding6,946Form 4
2025-08-01NTRASale1,183 @ $133.66$158K−17.0% of holding5,763Form 4
2025-07-01NTRASale2,651 @ $167.56$444K−24.6% of holding8,118Form 4
2025-07-01NTRASale1,648 @ $167.05$275K−13.3% of holding10,769Form 4
2025-06-10NTRASale3,400 @ $164.33$559K−35.0% of holding6,304Form 4
2025-06-10NTRASale600 @ $165.04$99K−9.5% of holding5,704Form 4
2025-05-01NTRASale1,450 @ $153.06$222K−13.0% of holding9,704Form 4
2025-05-01NTRASale942 @ $152.22$143K−7.8% of holding11,154Form 4
2025-05-01NTRASale672 @ $151.37$102K−5.3% of holding12,096Form 4
2025-05-01NTRASale341 @ $149.96$51K−2.6% of holding12,768Form 4
2025-05-01NTRASale323 @ $147.95$48K−2.4% of holding13,350Form 4
2025-05-01NTRASale241 @ $149.04$36K−1.8% of holding13,109Form 4
2025-05-01NTRASale31 @ $146.34$5K−0.2% of holding13,673Form 4
2025-04-01NTRASale1,528 @ $141.13$216K−13.0% of holding10,266Form 4
2025-04-01NTRASale1,512 @ $140.17$212K−11.4% of holding11,794Form 4
2025-04-01NTRASale398 @ $139.33$55K−2.9% of holding13,306Form 4
2025-04-01NTRASale365 @ $142.25$52K−3.6% of holding9,901Form 4
2025-04-01NTRASale197 @ $142.82$28K−2.0% of holding9,704Form 4
2025-03-12NTRASale1,682 @ $148.71$250K−14.3% of holding10,085Form 4
2025-03-12NTRASale1,014 @ $145.86$148K−7.4% of holding12,690Form 4
2025-03-12NTRASale923 @ $147.20$136K−7.3% of holding11,767Form 4
2025-03-12NTRASale381 @ $149.27$57K−3.8% of holding9,704Form 4
30 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-06-26NTRAAward / grant1,5717,754Form 4
2026-06-26NTRAAward / grant987,852Form 4
2026-06-26NTRAAward / grant1,5717,754Form 4
2026-06-26NTRAAward / grant987,852Form 4
2026-06-05NTRAOption exercise11,00017,183Form 4
2026-06-05NTRAOption exercise11,00011,000Form 4
2026-04-24NTRAAward / grant2226,183Form 4
2026-04-24NTRAAward / grant1085,961Form 4
2026-04-24NTRAAward / grant2226,183Form 4
2026-04-24NTRAAward / grant1085,961Form 4
2026-01-30NTRAAward / grant915,853Form 4
2026-01-30NTRAAward / grant915,853Form 4
2025-10-31NTRAAward / grant1215,884Form 4
2025-10-31NTRAAward / grant1215,884Form 4
2025-07-25NTRAAward / grant1418,259Form 4
2025-07-25NTRAAward / grant1418,259Form 4
2025-07-01NTRAOption exercise4,29912,417Form 4
2025-07-01NTRAOption exercise4,2990Form 4
2025-06-27NTRAAward / grant2,1437,847Form 4
2025-06-27NTRAAward / grant2,1437,847Form 4
2025-06-27NTRAAward / grant2718,118Form 4
2025-06-27NTRAAward / grant2718,118Form 4
2025-05-01NTRAOption exercise4,00013,704Form 4
2025-05-01NTRAOption exercise4,0004,299Form 4
2025-04-01NTRAOption exercise2,87013,704Form 4
2025-04-01NTRAOption exercise1,13010,834Form 4
2025-04-01NTRAOption exercise1,1300Form 4
2025-04-01NTRAOption exercise2,8708,299Form 4
2025-03-12NTRAOption exercise4,00013,704Form 4
2025-03-12NTRAOption exercise4,0001,130Form 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.