Gail Boxer Marcus
CIK 1702176 · View on SEC EDGAR ↗
Insider
First SEC filing: June 9, 2026 · Latest: June 9, 2026
On this page
Insider at
Insider transactions
0 buys (P)
1 sells (S)
Net:
$-651,646
+ 75 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
75 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| June 5, 2026 | NTRA | S | 3,016 | $216.06 | $651,646 | 6,183 | — | — | 45.9% (price as of 2026-08-19) |
| Nov. 20, 2020 | NTRA | S | 19,169 | $85.29 | $1,634,924 | 0 Direct | -100.00% | Disposed | 269.6% (price as of 2026-08-19) |
| May 18, 2020 | NTRA | S | 497 | $46.62 | $23,170 | 0 Direct | -100.00% | Disposed | 576.1% (price as of 2026-08-19) |
| May 18, 2020 | NTRA | S | 6,781 | $45.94 | $311,519 | 497 Direct | -93.17% | Disposed | 586.1% (price as of 2026-08-19) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| July 8, 2022 | NTRA | Restricted Stock Unit | Common Stock (223) | — | — | 223 | Acquired |
| July 8, 2022 | NTRA | Stock Option (right to buy) | Common Stock (338) | $40.48 | July 7, 2032 | 338 | Acquired |
| May 27, 2022 | NTRA | Restricted Stock Unit | Common Stock (7,068) | — | — | 7,068 | Acquired |
| May 25, 2022 | NTRA | Restricted Stock Unit | Common Stock (2,614) | — | — | 2,614 | Disposed |
| April 8, 2022 | NTRA | Stock Option (right to buy) | Common Stock (281) | $42.86 | April 7, 2032 | 281 | Acquired |
| Jan. 14, 2022 | NTRA | Stock Option (right to buy) | Common Stock (183) | $67.37 | Jan. 13, 2032 | 183 | Acquired |
| Oct. 8, 2021 | NTRA | Stock Option (right to buy) | Common Stock (109) | $114.07 | Oct. 7, 2031 | 109 | Acquired |
| July 23, 2021 | NTRA | Stock Option (right to buy) | Common Stock (109) | $114.00 | July 22, 2031 | 109 | Acquired |
| May 28, 2021 | NTRA | Restricted Stock Unit | Common Stock (5,712) | — | — | 5,712 | Disposed |
| May 28, 2021 | NTRA | Restricted Stock Unit | Common Stock (2,614) | — | — | 2,614 | Acquired |
| April 9, 2021 | NTRA | Stock Option (right to buy) | Common Stock (118) | $104.98 | April 8, 2031 | 118 | Acquired |
| Jan. 8, 2021 | NTRA | Stock Option (right to buy) | Common Stock (114) | $111.17 | Jan. 7, 2031 | 114 | Acquired |
| Nov. 20, 2020 | NTRA | Stock Option (right to buy) | Common Stock (11,400) | $7.86 | April 16, 2027 | 11,400 | Disposed |
| Nov. 20, 2020 | NTRA | Stock Option (right to buy) | Common Stock (679) | $10.73 | July 13, 2027 | 679 | Disposed |
| Nov. 20, 2020 | NTRA | Stock Option (right to buy) | Common Stock (786) | $9.51 | Dec. 7, 2027 | 786 | Disposed |
| Nov. 20, 2020 | NTRA | Stock Option (right to buy) | Common Stock (419) | $10.18 | Jan. 11, 2028 | 419 | Disposed |
| Nov. 20, 2020 | NTRA | Stock Option (right to buy) | Common Stock (923) | $10.29 | April 12, 2028 | 923 | Disposed |
| Nov. 20, 2020 | NTRA | Stock Option (right to buy) | Common Stock (412) | $10.29 | April 12, 2028 | 412 | Disposed |
| Nov. 20, 2020 | NTRA | Stock Option (right to buy) | Common Stock (439) | $21.59 | July 12, 2028 | 439 | Disposed |
| Nov. 20, 2020 | NTRA | Stock Option (right to buy) | Common Stock (468) | $20.27 | Oct. 25, 2028 | 468 | Disposed |
| Nov. 20, 2020 | NTRA | Stock Option (right to buy) | Common Stock (712) | $13.60 | Jan. 24, 2029 | 712 | Disposed |
| Nov. 20, 2020 | NTRA | Stock Option (right to buy) | Common Stock (691) | $20.27 | April 11, 2029 | 691 | Disposed |
| Nov. 20, 2020 | NTRA | Stock Option (right to buy) | Common Stock (614) | $25.64 | July 11, 2029 | 614 | Disposed |
| Nov. 20, 2020 | NTRA | Stock Option (right to buy) | Common Stock (236) | $37.06 | Oct. 10, 2029 | 236 | Disposed |
| Nov. 20, 2020 | NTRA | Stock Option (right to buy) | Common stock (582) | $35.71 | Jan. 23, 2030 | 582 | Disposed |
| Nov. 20, 2020 | NTRA | Stock Option (right to buy) | Common Stock (442) | $40.93 | June 11, 2030 | 442 | Disposed |
| Nov. 20, 2020 | NTRA | Stock Option (right to buy) | Common Stock (88) | $40.93 | June 11, 2030 | 88 | Disposed |
| Nov. 20, 2020 | NTRA | Stock Option (right to buy) | Common Stock (278) | $46.92 | July 9, 2030 | 278 | Disposed |
| Oct. 9, 2020 | NTRA | Stock Option (right to buy) | Common Stock (175) | $73.58 | Oct. 8, 2030 | 175 | Acquired |
| July 10, 2020 | NTRA | Stock Option (right to buy) | Common Stock (278) | $46.92 | July 9, 2030 | 278 | Acquired |
| June 12, 2020 | NTRA | Restricted Stock Units | Common Stock (5,712) | — | — | 5,712 | Acquired |
| June 12, 2020 | NTRA | Stock Option (right to buy) | Common Stock (442) | $40.93 | June 11, 2030 | 442 | Acquired |
| June 12, 2020 | NTRA | Stock Option (right to buy) | Common Stock (88) | $40.93 | June 11, 2030 | 88 | Acquired |
| April 24, 2020 | NTRA | Stock Option (right to buy) | Common Stock (331) | $36.85 | April 23, 2030 | 331 | Acquired |
| April 24, 2020 | NTRA | Stock Option (right to buy) | Common Stock (331) | $36.85 | April 23, 2030 | 331 | Acquired |
| Jan. 24, 2020 | NTRA | Stock Option (right to buy) | Common Stock (582) | $35.71 | Jan. 23, 2030 | 582 | Acquired |
| Oct. 11, 2019 | NTRA | Stock Option (right to buy) | Common Stock (236) | $37.06 | Oct. 10, 2029 | 236 | Acquired |
| July 12, 2019 | NTRA | Stock Option (right to buy) | Common Stock (614) | $25.64 | July 11, 2029 | 614 | Acquired |
| May 24, 2019 | NTRA | Stock Option (right to buy) | Common Stock (22,000) | $22.83 | May 23, 2029 | 22,000 | Acquired |
| May 16, 2019 | NTRA | Restricted Stock Unit | Common Stock (7,278) | — | — | 7,278 | Disposed |
| April 12, 2019 | NTRA | Restricted Stock Units | Common Stock (7,278) | — | — | 7,278 | Acquired |
| April 12, 2019 | NTRA | Stock Option (right to buy) | Common Stock (691) | $20.27 | April 11, 2029 | 691 | Acquired |
| Jan. 25, 2019 | NTRA | Stock Option (right to buy) | Common Stock (712) | $13.60 | Jan. 24, 2029 | 712 | Acquired |
| Oct. 26, 2018 | NTRA | Stock Option (right to buy) | Common Stock (468) | $20.27 | Oct. 25, 2028 | 468 | Acquired |
| Sept. 14, 2018 | NTRA | Restricted Stock Units | Common Stock (5,785) | — | — | 5,785 | Acquired |
| Sept. 14, 2018 | NTRA | Restricted Stock Units | Common Stock (5,785) | — | — | 5,785 | Acquired |
| Sept. 14, 2018 | NTRA | Stock Option (right to buy) | Common Stock (11,169) | $24.42 | Sept. 13, 2028 | 11,169 | Acquired |
| July 13, 2018 | NTRA | Stock Option (right to buy) | Common Stock (439) | $21.59 | July 12, 2028 | 439 | Acquired |
| April 13, 2018 | NTRA | Stock Option (right to buy | Common Stock (412) | $10.29 | April 12, 2028 | 412 | Acquired |
| April 13, 2018 | NTRA | Stock Option (right to buy) | Common Stock (923) | $10.29 | April 12, 2028 | 923 | Acquired |
| Dec. 8, 2017 | NTRA | Stock Option (right to buy) | Common Stock (786) | $9.51 | Dec. 7, 2027 | 786 | Acquired |
| July 14, 2017 | NTRA | Stock Option (right to buy) | Common Stock (679) | $10.73 | July 13, 2027 | 679 | Acquired |
| April 17, 2017 | NTRA | Stock Option (Right to Buy) | Common Stock (16,530) | $7.86 | April 16, 2027 | 16,530 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).