NTRA's three largest insider shareholders as of September 12, 2026 are Matthew Rabinowitz (Executive Chairman, 2.23Mn shares), Matthew Rabinowitz (Executive Chairman, 1.91Mn shares), Roelof Botha (Director, 1.29Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Matthew Rabinowitz | Executive Chairman | 2,225,394 | 0 | 2,225,394 | 55.3% | 11 Sep, 2026 |
| 2 | Steven Leonard Chapman | Ceo And President | 459,452 | 0 | 459,452 | 11.4% | 03 Sep, 2026 |
| 3 | Daniel Rabinowitz | Sec. And Chief Legal Officer | 345,879 | 0 | 345,879 | 8.6% | 05 Aug, 2026 |
| 4 | Jonathan Sheena | Co Founder | 230,464 | 46,778 | 277,242 | 6.9% | 14 Aug, 2026 |
| 5 | Michael Burkes Brophy | Chief Financial Officer | 259,851 | 0 | 259,851 | 6.5% | 05 Aug, 2026 |
| 6 | John Fesko | President, Chief Bus. Officer | 197,257 | 0 | 197,257 | 4.9% | 28 Aug, 2026 |
| 7 | Solomon Moshkevich | President, Clinicaldiagnostics | 110,859 | 0 | 110,859 | 2.8% | 03 Sep, 2026 |
| 8 | James Healy | Director | 46,260 | 0 | 46,260 | 1.2% | 29 Apr, 2025 |
| 9 | Robert Alan Schueren | Chief Operating Officer | 24,091 | 0 | 24,091 | 0.6% | 31 Jan, 2023 |
| 10 | Roy D. Baynes | Director | 20,158 | 0 | 20,158 | 0.5% | 30 Jun, 2026 |
| 11 | Todd C Cozzens | Director | 15,813 | 0 | 15,813 | 0.4% | 27 May, 2022 |
| 12 | Gail Boxer Marcus | Director | 7,852 | 0 | 7,852 | 0.2% | 30 Jun, 2026 |
| 13 | Monica Bertagnolli | Director | 7,020 | 0 | 7,020 | 0.2% | 30 Jun, 2026 |
| 14 | Herm Rosenman | Chief Financial Officer | 5,927 | 0 | 5,927 | 0.1% | 30 Jun, 2026 |
| 15 | Brinkley Ruth Williams | Director | 5,475 | 0 | 5,475 | 0.1% | 28 Apr, 2026 |
| 16 | Rowan E Chapman | Director | 4,663 | 0 | 4,663 | 0.1% | 17 Jul, 2026 |
| 17 | Roelof Botha | Director | 4,585 | 0 | 4,585 | 0.1% | 30 Jun, 2026 |
| 18 | Eric H Rubin | Director | 2,204 | 0 | 2,204 | 0.1% | 30 Jun, 2026 |
| 19 | Thomas J. Jr. Lynch | Director | 1,905 | 0 | 1,905 | 0.0% | 30 Jun, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 11 Sep, 2026 | Matthew Rabinowitz | Executive Chairman | Disposed S | 800 | $325.01 | $260.01K | 2,274,594 | Direct |
| 11 Sep, 2026 | Matthew Rabinowitz | Executive Chairman | Disposed S | 3,647 | $326.11 | $1.19Mn | 2,270,947 | Direct |
| 11 Sep, 2026 | Matthew Rabinowitz | Executive Chairman | Disposed S | 10,556 | $327.14 | $3.45Mn | 2,260,391 | Direct |
| 11 Sep, 2026 | Matthew Rabinowitz | Executive Chairman | Disposed S | 17,933 | $327.97 | $5.88Mn | 2,242,458 | Direct |
| 11 Sep, 2026 | Matthew Rabinowitz | Executive Chairman | Disposed S | 15,764 | $328.95 | $5.19Mn | 2,226,694 | Direct |
| 11 Sep, 2026 | Matthew Rabinowitz | Executive Chairman | Disposed S | 1,300 | $329.62 | $428.51K | 2,225,394 | Direct |
| 01 Sep, 2026 | Steven Leonard Chapman | Ceo And President | Disposed S | 1,698 | $320.99 | $545.04K | 98,199 | Direct |
| 01 Sep, 2026 | Solomon Moshkevich | President, Clinicaldiagnostics | Disposed S | 1,000 | $319.76 | $319.76K | 128,019 | Direct |
| 01 Sep, 2026 | Solomon Moshkevich | President, Clinicaldiagnostics | Disposed S | 1,400 | $320.92 | $449.29K | 126,619 | Direct |
| 01 Sep, 2026 | Solomon Moshkevich | President, Clinicaldiagnostics | Disposed S | 600 | $321.91 | $193.14K | 126,019 | Direct |
| 02 Sep, 2026 | Solomon Moshkevich | President, Clinicaldiagnostics | Disposed S | 15,160 | $326.89 | $4.96Mn | 110,859 | Direct |
| 06 Aug, 2026 | John Fesko | President, Chief Bus. Officer | Acquired A | 20,000 | $0.00 | $0 | 203,774 | Direct |
| 10 Aug, 2026 | John Fesko | President, Chief Bus. Officer | Disposed S | 6,517 | $321.53 | $2.10Mn | 197,257 | Direct |
| 10 Aug, 2026 | Jonathan Sheena | Director, Other | Disposed S | 6,000 | $325.32 | $1.95Mn | 230,464 | Direct |
| 07 Aug, 2026 | Jonathan Sheena | Director, Other | Disposed S | 100 | $308.40 | $30.84K | 245,514 | Direct |
| 07 Aug, 2026 | Matthew Rabinowitz | Executive Chairman | Disposed S | 2,000 | $320.90 | $641.80K | 2,000 | Indirect |
| 07 Aug, 2026 | Jonathan Sheena | Director, Other | Disposed S | 400 | $310.23 | $124.09K | 245,114 | Direct |
| 07 Aug, 2026 | Jonathan Sheena | Director, Other | Disposed S | 400 | $311.88 | $124.75K | 244,714 | Direct |
| 07 Aug, 2026 | Jonathan Sheena | Director, Other | Disposed S | 900 | $313.07 | $281.76K | 243,814 | Direct |
| 07 Aug, 2026 | Jonathan Sheena | Director, Other | Disposed S | 850 | $314.25 | $267.11K | 242,964 | Direct |