As of August 27, 2026, the three largest insider holders of NEO are Oort Douglas M Van (Chairman And Ceo, 2.47Mn shares), Mark Mallon (Chief Executive Officer, 368.05K shares), George Cardoza (President Coo, Lab Ops, 244.16K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Oort Douglas M Van | Chairman And Ceo | 2,468,797 | 0 | 2,468,797 | 45.3% | 13 Aug, 2021 |
| 2 | Mark Mallon | Chief Executive Officer | 368,051 | 0 | 368,051 | 6.8% | 03 Mar, 2022 |
| 3 | George Cardoza | President Coo, Lab Ops | 244,157 | 0 | 244,157 | 4.5% | 03 Mar, 2022 |
| 4 | Jeffrey Scott Sherman | Chief Financial Officer | 220,009 | 0 | 220,009 | 4.0% | 24 Feb, 2026 |
| 5 | William Bonello | Chief Financial Officer | 191,548 | 0 | 191,548 | 3.5% | 02 May, 2022 |
| 6 | Warren Stone | Pres Chief Operating Officer | 181,078 | 0 | 181,078 | 3.3% | 25 Aug, 2026 |
| 7 | Douglas Matthew Brown | Chief Strategy Officer | 158,684 | 0 | 158,684 | 2.9% | 04 Apr, 2022 |
| 8 | Halley E Gilbert | Chief Legal Officer | 147,396 | 0 | 147,396 | 2.7% | 03 Mar, 2022 |
| 9 | Anthony P. Zook | Chief Executive Officer | 133,111 | 0 | 133,111 | 2.4% | 03 Apr, 2026 |
| 10 | Alison L. Hannah | Director | 131,023 | 0 | 131,023 | 2.4% | 03 Jun, 2025 |
| 11 | Vishal Sikri | President Advanced Diagnostics | 127,716 | 0 | 127,716 | 2.3% | 02 Jun, 2023 |
| 12 | Melody Harris | Chf Ops Off, Pres, Informatics | 109,755 | 0 | 109,755 | 2.0% | 25 Feb, 2025 |
| 13 | Alicia C Olivo | Evp, Gc Business Development | 93,567 | 0 | 93,567 | 1.7% | 13 May, 2026 |
| 14 | Lynn A. Tetrault | Director | 86,115 | 0 | 86,115 | 1.6% | 17 Jun, 2026 |
| 15 | Shashikant Kulkarni | Chief Scientific Officer | 82,673 | 0 | 82,673 | 1.5% | 04 Apr, 2023 |
| 16 | Stephen M Kanovsky | Director | 75,421 | 0 | 75,421 | 1.4% | 03 Jun, 2026 |
| 17 | Michael Aaron Kelly | Director | 67,086 | 0 | 67,086 | 1.2% | 03 Jun, 2026 |
| 18 | Bruce K Crowther | Director | 65,120 | 0 | 65,120 | 1.2% | 14 Jun, 2022 |
| 19 | David Brian Perez | Director | 56,967 | 0 | 56,967 | 1.0% | 03 Jun, 2026 |
| 20 | Neil Gunn | Director | 51,177 | 0 | 51,177 | 0.9% | 03 Jun, 2026 |
| 21 | Kathryn B Mckenzie | Chief Sustainability/Risk Ofcr | 49,361 | 0 | 49,361 | 0.9% | 12 Jan, 2022 |
| 22 | Jennifer Balliet | Vp And Chief Culture Officer | 48,615 | 0 | 48,615 | 0.9% | 30 Dec, 2021 |
| 23 | David Sholehvar | President, Clinical Services | 43,216 | 0 | 43,216 | 0.8% | 03 Aug, 2022 |
| 24 | Clive Morris | President Of Inivata | 41,280 | 0 | 41,280 | 0.8% | 30 Dec, 2021 |
| 25 | Kevin C Johnson | Director | 37,398 | 0 | 37,398 | 0.7% | 23 Dec, 2021 |
| 26 | Gina M Wallar | President, Pharma Services | 33,443 | 0 | 33,443 | 0.6% | 03 Mar, 2022 |
| 27 | Felicia Williams | Director | 30,237 | 0 | 30,237 | 0.6% | 01 Jun, 2026 |
| 28 | Cynthia J Dieter | Chief Accounting Officer | 29,765 | 0 | 29,765 | 0.5% | 03 Mar, 2023 |
| 29 | Elizabeth Floegel | Director | 23,590 | 0 | 23,590 | 0.4% | 03 Jun, 2025 |
| 30 | Rachel A Stahler | Director | 21,335 | 0 | 21,335 | 0.4% | 14 Jun, 2022 |
| 31 | David Daly | Director | 17,179 | 0 | 17,179 | 0.3% | 14 Jun, 2022 |
| 32 | John P. Kenny | Director | 5,893 | 0 | 5,893 | 0.1% | 03 Jun, 2026 |
| 33 | Greg D Aunan | Chief Accounting Officer | 5,153 | 0 | 5,153 | 0.1% | 06 Aug, 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 |
|---|---|---|---|---|---|---|---|---|
| 21 Aug, 2026 | Warren Stone | Pres Chief Operating Officer | Acquired M | 28,106 | $0.00 | $0 | 192,138 | Direct |
| 21 Aug, 2026 | Warren Stone | Pres Chief Operating Officer | Disposed F | 11,060 | $0.00 | $0 | 181,078 | Direct |
| 21 Aug, 2026 | Warren Stone | Pres Chief Operating Officer | Disposed M | 28,106 | $0.00 | $0 | 28,106 | Direct |
| 04 Aug, 2026 | Greg D Aunan | Chief Accounting Officer | Disposed S | 20,000 | $16.07 | $321.40K | 5,153 | Direct |
| 23 Jun, 2026 | Carolyn S Starrett | Director | Acquired A | 9,784 | $0.00 | $0 | 9,784 | Direct |
| 23 Jun, 2026 | Carolyn S Starrett | Director | Acquired A | 14,125 | $0.00 | $0 | 14,125 | Direct |
| 15 Jun, 2026 | Lynn A. Tetrault | Director | Disposed S | 5,307 | $11.10 | $58.91K | 86,115 | Direct |
| 09 Jun, 2026 | Lynn A. Tetrault | Director | Disposed S | 5,307 | $11.29 | $59.92K | 91,422 | Direct |
| 01 Jun, 2026 | Michael Aaron Kelly | Director | Acquired M | 23,077 | $0.00 | $0 | 67,086 | Direct |
| 01 Jun, 2026 | Lynn A. Tetrault | Director | Acquired M | 23,077 | $0.00 | $0 | 96,729 | Direct |
| 01 Jun, 2026 | John P. Kenny | Director | Acquired M | 5,893 | $0.00 | $0 | 5,893 | Direct |
| 01 Jun, 2026 | Neil Gunn | Director | Acquired M | 23,077 | $0.00 | $0 | 51,177 | Direct |
| 01 Jun, 2026 | David Brian Perez | Director | Acquired M | 23,077 | $0.00 | $0 | 56,967 | Direct |
| 01 Jun, 2026 | Stephen M Kanovsky | Director | Acquired M | 23,077 | $0.00 | $0 | 75,421 | Direct |
| 01 Jun, 2026 | Neil Gunn | Director | Disposed M | 23,077 | $0.00 | $0 | 0 | Direct |
| 01 Jun, 2026 | Stephen M Kanovsky | Director | Disposed M | 23,077 | $0.00 | $0 | 0 | Direct |
| 01 Jun, 2026 | John P. Kenny | Director | Disposed M | 5,893 | $0.00 | $0 | 0 | Direct |
| 01 Jun, 2026 | John P. Kenny | Director | Acquired A | 11,069 | $0.00 | $0 | 11,069 | Direct |
| 01 Jun, 2026 | David Brian Perez | Director | Disposed M | 23,077 | $0.00 | $0 | 0 | Direct |
| 01 Jun, 2026 | Neil Gunn | Director | Acquired A | 11,069 | $0.00 | $0 | 11,069 | Direct |