As of September 29, 2026, the three largest insider holders of QS are Dipender Saluja (Director, 9.89Mn shares), Jagdeep Singh (Director, 5.60Mn shares), Srinivasan Sivaram (Chief Executive Officer, 5.08Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Jagdeep Singh | Director | 0 | 5,600,858 | 5,600,858 | 23.4% | 10 Dec, 2024 |
| 2 | Srinivasan Sivaram | Chief Executive Officer | 5,078,264 | 0 | 5,078,264 | 21.2% | 20 Aug, 2026 |
| 3 | Luca Giovanni Fasoli | Chief Operating Officer | 1,907,088 | 0 | 1,907,088 | 8.0% | 20 Aug, 2026 |
| 4 | Kevin Hettrich | Chief Financial Officer | 1,785,162 | 0 | 1,785,162 | 7.5% | 20 Aug, 2026 |
| 5 | Mohit Singh | Chief Development Officer | 1,737,150 | 0 | 1,737,150 | 7.3% | 20 Aug, 2026 |
| 6 | Timothy Holme | Chief Technology Officer | 1,583,075 | 0 | 1,583,075 | 6.6% | 17 Sep, 2026 |
| 7 | Michael O Iii Mccarthy | Chief Legal Officer | 1,527,774 | 0 | 1,527,774 | 6.4% | 20 Aug, 2026 |
| 8 | Ventures Iii, L.P. Khosla | TenPercentOwner | 0 | 1,286,463 | 1,286,463 | 5.4% | 06 Dec, 2021 |
| 9 | Justin E Mirro | Director | 0 | 1,184,056 | 1,184,056 | 5.0% | 10 Jan, 2022 |
| 10 | Dipender Saluja | Director | 396,418 | 0 | 396,418 | 1.7% | 05 Jun, 2026 |
| 11 | Fritz Prinz | Director | 383,416 | 0 | 383,416 | 1.6% | 28 Oct, 2025 |
| 12 | Celina Mikolajczak | Chief Manufacturing Officer | 271,009 | 0 | 271,009 | 1.1% | 07 Mar, 2022 |
| 13 | Jurgen Leohold | Director | 184,630 | 0 | 184,630 | 0.8% | 06 Jun, 2025 |
| 14 | Jeneanne Michelle Hanley | Director | 165,729 | 0 | 165,729 | 0.7% | 05 Jun, 2026 |
| 15 | Dennis Segers | Director | 149,524 | 0 | 149,524 | 0.6% | 05 Jun, 2026 |
| 16 | Brad W Buss | Director | 146,659 | 0 | 146,659 | 0.6% | 05 Jun, 2026 |
| 17 | Gena C Lovett | Director | 144,354 | 0 | 144,354 | 0.6% | 05 Jun, 2026 |
| 18 | Jeffrey B Straubel | Director | 131,298 | 0 | 131,298 | 0.5% | 14 May, 2026 |
| 19 | Susan Huppertz | Director | 100,686 | 0 | 100,686 | 0.4% | 12 Jun, 2024 |
| 20 | Ross Niebergall | Director | 71,558 | 0 | 71,558 | 0.3% | 05 Jun, 2026 |
| 21 | Geoffrey G Ribar | Director | 60,285 | 0 | 60,285 | 0.3% | 05 Jun, 2026 |
| 22 | L John Doerr | Director | 5,294 | 0 | 5,294 | 0.0% | 17 Dec, 2021 |
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 |
|---|---|---|---|---|---|---|---|---|
| 15 Sep, 2026 | Timothy Holme | Chief Technology Officer | Disposed S | 75,000 | $5.09 | $381.58K | 1,583,075 | Direct |
| 15 Sep, 2026 | Timothy Holme | Chief Technology Officer | Acquired C | 22,500 | $0.00 | $0 | 22,500 | Indirect |
| 15 Sep, 2026 | Timothy Holme | Chief Technology Officer | Disposed S | 22,500 | $5.09 | $114.47K | 0 | Indirect |
| 15 Sep, 2026 | Timothy Holme | Chief Technology Officer | Acquired C | 22,500 | $0.00 | $0 | 22,500 | Indirect |
| 15 Sep, 2026 | Timothy Holme | Chief Technology Officer | Disposed S | 22,500 | $5.09 | $114.47K | 0 | Indirect |
| 15 Sep, 2026 | Timothy Holme | Chief Technology Officer | Disposed C | 22,500 | $0.00 | $0 | 1,189,857 | Indirect |
| 15 Sep, 2026 | Timothy Holme | Chief Technology Officer | Disposed C | 22,500 | $0.00 | $0 | 1,327,500 | Indirect |
| 21 Aug, 2026 | Timothy Holme | Chief Technology Officer | Acquired C | 12,723 | $0.00 | $0 | 12,723 | Indirect |
| 21 Aug, 2026 | Timothy Holme | Chief Technology Officer | Disposed S | 12,723 | $6.01 | $76.52K | 0 | Indirect |
| 21 Aug, 2026 | Timothy Holme | Chief Technology Officer | Disposed C | 12,723 | $0.00 | $0 | 1,212,357 | Indirect |
| 18 Aug, 2026 | Luca Giovanni Fasoli | Chief Operating Officer | Disposed F | 32,255 | $5.74 | $185.29K | 1,907,088 | Direct |
| 18 Aug, 2026 | Timothy Holme | Chief Technology Officer | Disposed F | 34,086 | $5.74 | $195.81K | 1,678,420 | Direct |
| 18 Aug, 2026 | Mohit Singh | Chief Development Officer | Disposed F | 34,304 | $5.74 | $197.06K | 1,737,150 | Direct |
| 18 Aug, 2026 | Michael O Iii Mccarthy | Chief Legal Officer | Disposed F | 25,709 | $5.74 | $147.69K | 1,527,774 | Direct |
| 18 Aug, 2026 | Kevin Hettrich | Chief Financial Officer | Disposed F | 31,095 | $5.74 | $178.63K | 1,785,162 | Direct |
| 18 Aug, 2026 | Srinivasan Sivaram | Chief Executive Officer | Disposed F | 81,752 | $5.74 | $469.62K | 5,078,264 | Direct |
| 19 Aug, 2026 | Timothy Holme | Chief Technology Officer | Disposed S | 20,345 | $5.76 | $117.14K | 1,658,075 | Direct |
| 19 Aug, 2026 | Timothy Holme | Chief Technology Officer | Acquired C | 21,531 | $0.00 | $0 | 21,531 | Indirect |
| 19 Aug, 2026 | Timothy Holme | Chief Technology Officer | Disposed S | 21,531 | $5.76 | $123.97K | 0 | Indirect |
| 19 Aug, 2026 | Timothy Holme | Chief Technology Officer | Disposed C | 21,531 | $0.00 | $0 | 1,225,080 | Indirect |