As of September 26, 2026, the three largest insider holders of NET are Carl Ledbetter (Director, 873.07K shares), John Graham-Cumming (Director, 494.91K shares), Scott D Sandell (Director, 406.60K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Carl Ledbetter | Director | 0 | 873,073 | 873,073 | 39.2% | 23 Sep, 2026 |
| 2 | John Graham-Cumming | Director | 494,909 | 0 | 494,909 | 22.2% | 11 Aug, 2026 |
| 3 | Matthew Prince | Ceo Board Co Chair | 315,300 | 0 | 315,300 | 14.2% | 18 Aug, 2026 |
| 4 | Alissa Michelle Starzak | Chief Legal Officer | 112,082 | 0 | 112,082 | 5.0% | 19 Aug, 2026 |
| 5 | Thomas J Seifert | Chief Financial Officer | 107,902 | 0 | 107,902 | 4.8% | 21 Sep, 2026 |
| 6 | Douglas James Kramer | Chief Legal Officer | 88,649 | 0 | 88,649 | 4.0% | 18 Feb, 2026 |
| 7 | Michelle Zatlyn | President Board Co Chair | 0 | 69,775 | 69,775 | 3.1% | 08 Sep, 2026 |
| 8 | Janel Riley | Chief Accounting Officer | 41,547 | 0 | 41,547 | 1.9% | 19 Aug, 2026 |
| 9 | Katrin Suder | Director | 38,272 | 0 | 38,272 | 1.7% | 02 Jul, 2026 |
| 10 | Paul D. Underwood | Chief Accounting Officer | 27,834 | 0 | 27,834 | 1.2% | 17 May, 2023 |
| 11 | Mark Anderson | Director | 15,388 | 0 | 15,388 | 0.7% | 02 Jun, 2023 |
| 12 | Scott D Sandell | Director | 11,378 | 0 | 11,378 | 0.5% | 02 Jul, 2026 |
| 13 | Mark J Hawkins | Director | 10,632 | 0 | 10,632 | 0.5% | 04 Aug, 2026 |
| 14 | Karim Lakhani | Director | 7,548 | 0 | 7,548 | 0.3% | 02 Jul, 2026 |
| 15 | Maria S Eitel | Director | 5,927 | 0 | 5,927 | 0.3% | 04 Nov, 2024 |
| 16 | Stacey Cunningham | Director | 4,215 | 0 | 4,215 | 0.2% | 02 Jul, 2026 |
| 17 | Stanley J Meresman | Director | 2,441 | 0 | 2,441 | 0.1% | 12 May, 2022 |
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 |
|---|---|---|---|---|---|---|---|---|
| 22 Sep, 2026 | Carl Ledbetter | Director | Disposed S | 5,000 | $353.15 | $1.77Mn | 873,073 | Indirect |
| 17 Sep, 2026 | Thomas J Seifert | Chief Financial Officer | Acquired C | 10,000 | — | — | 117,902 | Direct |
| 17 Sep, 2026 | Thomas J Seifert | Chief Financial Officer | Disposed S | 100 | $318.90 | $31.89K | 117,802 | Direct |
| 17 Sep, 2026 | Thomas J Seifert | Chief Financial Officer | Disposed S | 100 | $320.89 | $32.09K | 117,702 | Direct |
| 17 Sep, 2026 | Thomas J Seifert | Chief Financial Officer | Disposed S | 100 | $326.56 | $32.66K | 117,602 | Direct |
| 17 Sep, 2026 | Thomas J Seifert | Chief Financial Officer | Disposed S | 300 | $328.04 | $98.41K | 117,302 | Direct |
| 17 Sep, 2026 | Thomas J Seifert | Chief Financial Officer | Disposed S | 700 | $329.37 | $230.56K | 116,602 | Direct |
| 17 Sep, 2026 | Thomas J Seifert | Chief Financial Officer | Disposed S | 700 | $330.23 | $231.16K | 115,902 | Direct |
| 17 Sep, 2026 | Thomas J Seifert | Chief Financial Officer | Disposed S | 1,196 | $331.59 | $396.58K | 114,706 | Direct |
| 17 Sep, 2026 | Thomas J Seifert | Chief Financial Officer | Disposed S | 1,604 | $332.50 | $533.33K | 113,102 | Direct |
| 17 Sep, 2026 | Thomas J Seifert | Chief Financial Officer | Disposed S | 2,632 | $333.62 | $878.08K | 110,470 | Direct |
| 17 Sep, 2026 | Thomas J Seifert | Chief Financial Officer | Disposed S | 1,868 | $334.59 | $625.02K | 108,602 | Direct |
| 17 Sep, 2026 | Thomas J Seifert | Chief Financial Officer | Disposed S | 600 | $335.32 | $201.19K | 108,002 | Direct |
| 17 Sep, 2026 | Thomas J Seifert | Chief Financial Officer | Disposed S | 100 | $336.51 | $33.65K | 107,902 | Direct |
| 17 Sep, 2026 | Thomas J Seifert | Chief Financial Officer | Disposed M | 10,000 | $0.00 | $0 | 0 | Direct |
| 17 Sep, 2026 | Thomas J Seifert | Chief Financial Officer | Acquired M | 10,000 | $0.00 | $0 | 18,925 | Direct |
| 17 Sep, 2026 | Thomas J Seifert | Chief Financial Officer | Disposed C | 10,000 | $0.00 | $0 | 8,925 | Direct |
| 03 Sep, 2026 | Michelle Zatlyn | President Board Co Chair | Acquired C | 33,003 | — | — | 102,778 | Indirect |
| 03 Sep, 2026 | Michelle Zatlyn | President Board Co Chair | Disposed S | 7,203 | $276.79 | $1.99Mn | 95,575 | Indirect |
| 03 Sep, 2026 | Michelle Zatlyn | President Board Co Chair | Disposed S | 7,273 | $277.79 | $2.02Mn | 88,302 | Indirect |