As of August 29, 2026, the three largest insider holders of NTSK are Strategic Partners Vi, L.P. Iconiq (TenPercentOwner, 66.27Mn shares), William J.G. Griffith (Director, 66.27Mn shares), Strategic Partners Viii Holdings, L.P. Iconiq (TenPercentOwner, 916.69K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Strategic Partners Vi, L.P. Iconiq | TenPercentOwner | 8,723,318 | 57,544,195 | 66,267,513 | 97.4% | 17 Mar, 2026 |
| 2 | Strategic Partners Viii Holdings, L.P. Iconiq | TenPercentOwner | 916,690 | 0 | 916,690 | 1.3% | 14 Jul, 2026 |
| 3 | William J.G. Griffith | Director, TenPercentOwner | 0 | 610,291 | 610,291 | 0.9% | 10 Jul, 2026 |
| 4 | Raphael Bousquet | Chief Revenue Officer | 170,103 | 0 | 170,103 | 0.3% | 06 Jul, 2026 |
| 5 | Matto Andrew H Del | Chief Financial Officer | 41,493 | 0 | 41,493 | 0.1% | 07 Jan, 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 |
|---|---|---|---|---|---|---|---|---|
| 10 Jul, 2026 | Strategic Partners Viii Holdings, L.P. Iconiq | TenPercentOwner | Acquired P | 241,628 | $12.26 | $2.96Mn | 851,919 | Direct |
| 13 Jul, 2026 | Strategic Partners Viii Holdings, L.P. Iconiq | TenPercentOwner | Acquired P | 64,771 | $12.42 | $804.55K | 916,690 | Direct |
| 08 Jul, 2026 | William J.G. Griffith | Director, TenPercentOwner | Acquired P | 610,291 | $11.82 | $7.22Mn | 610,291 | Indirect |
| 08 Jul, 2026 | Arif Janmohamed | Director | Acquired A | 16,778 | $0.00 | $0 | 16,778 | Direct |
| 08 Jul, 2026 | Eric Wolford | Director | Acquired A | 16,778 | $0.00 | $0 | 16,778 | Direct |
| 08 Jul, 2026 | Strategic Partners Viii Holdings, L.P. Iconiq | TenPercentOwner | Acquired P | 200 | $11.67 | $2.33K | 200 | Direct |
| 08 Jul, 2026 | Strategic Partners Viii Holdings, L.P. Iconiq | TenPercentOwner | Acquired P | 610,091 | $11.82 | $7.21Mn | 610,291 | Direct |
| 08 Jul, 2026 | William J.G. Griffith | Director, TenPercentOwner | Acquired A | 16,778 | $0.00 | $0 | 16,778 | Direct |
| 07 Jul, 2026 | Venture Partners Select, L.P. Lightspeed | TenPercentOwner | Acquired C | 3,034,693 | — | — | 3,034,693 | Indirect |
| 07 Jul, 2026 | Venture Partners Ix, L.P. Lightspeed | TenPercentOwner | Acquired C | 3,034,693 | — | — | 3,034,693 | Indirect |
| 07 Jul, 2026 | Venture Partners Ix, L.P. Lightspeed | TenPercentOwner | Disposed J | 3,034,693 | $0.00 | $0 | 0 | Indirect |
| 07 Jul, 2026 | Venture Partners Select, L.P. Lightspeed | TenPercentOwner | Disposed J | 3,034,693 | $0.00 | $0 | 0 | Indirect |
| 07 Jul, 2026 | Venture Partners Select, L.P. Lightspeed | TenPercentOwner | Acquired J | 792,813 | $0.00 | $0 | 792,813 | Indirect |
| 07 Jul, 2026 | Venture Partners Ix, L.P. Lightspeed | TenPercentOwner | Acquired J | 792,813 | $0.00 | $0 | 792,813 | Indirect |
| 07 Jul, 2026 | Venture Partners Ix, L.P. Lightspeed | TenPercentOwner | Disposed J | 792,813 | $0.00 | $0 | 0 | Indirect |
| 07 Jul, 2026 | Venture Partners Select, L.P. Lightspeed | TenPercentOwner | Disposed J | 792,813 | $0.00 | $0 | 0 | Indirect |
| 07 Jul, 2026 | Venture Partners Select, L.P. Lightspeed | TenPercentOwner | Acquired J | 10,621 | $0.00 | $0 | 10,621 | Indirect |
| 07 Jul, 2026 | Venture Partners Ix, L.P. Lightspeed | TenPercentOwner | Acquired J | 10,621 | $0.00 | $0 | 10,621 | Indirect |
| 08 Jul, 2026 | Venture Partners Ix, L.P. Lightspeed | TenPercentOwner | Disposed S | 10,621 | $11.70 | $124.27K | 0 | Indirect |
| 08 Jul, 2026 | Venture Partners Select, L.P. Lightspeed | TenPercentOwner | Disposed S | 10,621 | $11.70 | $124.27K | 0 | Indirect |