IonQ's three largest insider shareholders as of April 28, 2026 are Enterprise Associates 15, L.P. New (TenPercentOwner, 26.31Mn shares), Enterprise Associates 15, L.P. New (TenPercentOwner, 26.31Mn shares), Enterprise Associates 15, L.P. New (TenPercentOwner, 26.31Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Enterprise Associates 15, L.P. New | - | 26,306,693 | 0 | 31 May, 2022 |
| Enterprise Associates 15, L.P. New | - | 26,306,693 | 0 | 31 May, 2022 |
| Enterprise Associates 15, L.P. New | - | 26,306,693 | 0 | 31 May, 2022 |
| Enterprise Associates 15, L.P. New | - | 26,306,693 | 0 | 31 May, 2022 |
| Enterprise Associates 15, L.P. New | - | 26,306,693 | 0 | 31 May, 2022 |
| 2016 Gp, L.L.C. Gv | - | 0 | 14,707,933 | 12 Apr, 2022 |
| 2016 Gp, L.L.C. Gv | - | 0 | 14,707,933 | 12 Apr, 2022 |
| 2016 Gp, L.L.C. Gv | - | 0 | 14,707,933 | 12 Apr, 2022 |
| 2016 Gp, L.L.C. Gv | - | 0 | 14,707,933 | 12 Apr, 2022 |
| 2016 Gp, L.L.C. Gv | - | 0 | 14,707,933 | 12 Apr, 2022 |
| Scott D Sandell | - | 0 | 14,625,359 | 18 Nov, 2022 |
| Forest Baskett | - | 0 | 14,624,354 | 18 Nov, 2022 |
| Peter W. Sonsini | - | 0 | 14,619,626 | 18 Nov, 2022 |
| Peter W. Sonsini | - | 0 | 14,619,626 | 18 Nov, 2022 |
| Mohamad Makhzoumi | - | 1,654 | 14,615,876 | 18 Nov, 2022 |
| Anthony A. Jr. Florence | - | 0 | 14,615,876 | 18 Nov, 2022 |
| Enterprise Associates 15, L.P. New | - | 14,614,829 | 0 | 18 Nov, 2022 |
| Partners 15, L.P. Nea | - | 0 | 14,614,829 | 18 Nov, 2022 |
| Enterprise Associates 15, L.P. New | - | 14,614,829 | 0 | 18 Nov, 2022 |
| Partners 15, L.P. Nea | - | 0 | 14,614,829 | 18 Nov, 2022 |
| Christopher Monroe | Chief Scientist | 3,897,970 | 0 | 17 Aug, 2023 |
| Christopher Monroe | Chief Scientist | 3,897,970 | 0 | 17 Aug, 2023 |
| Jungsang Kim | Chief Technology Officer | 1,019,941 | 900,000 | 15 Mar, 2024 |
| Jungsang Kim | Chief Technology Officer | 1,019,941 | 900,000 | 15 Mar, 2024 |
| Masi Niccolo De | President And Ceo | 1,155,667 | 0 | 13 Mar, 2026 |
| Masi Niccolo De | President And Ceo | 1,155,667 | 0 | 13 Mar, 2026 |
| Craig H Barratt | - | 0 | 926,347 | 04 Oct, 2021 |
| Blake Byers | - | 571,894 | 0 | 27 May, 2022 |
| Thomas G. Kramer | Chief Financial Officer | 473,302 | 0 | 05 Sep, 2025 |
| Thomas G. Kramer | Chief Financial Officer | 473,302 | 0 | 05 Sep, 2025 |
| Rima Alameddine | Chief Revenue Officer | 432,616 | 0 | 21 Nov, 2025 |
| Inder M Singh | Cfo Coo | 423,775 | 0 | 13 Mar, 2026 |
| Inder M Singh | Cfo Coo | 423,775 | 0 | 13 Mar, 2026 |
| Peter Hume Chapman | Executive Chair | 390,329 | 0 | 20 Jun, 2025 |
| Laurie A. Babinski | General Counsel And Secretary | 246,889 | 0 | 05 Jun, 2023 |
| Scott Francis Millard | Chief Business Officer | 216,457 | 0 | 15 Dec, 2025 |
| Scott Francis Millard | Chief Business Officer | 216,457 | 0 | 15 Dec, 2025 |
| William F Scannell | - | 140,560 | 0 | 18 Jun, 2025 |
| Robert T. Cardillo | - | 139,967 | 0 | 17 Apr, 2026 |
| Paul T Dacier | Cao, Clo And Secretary | 108,568 | 0 | 13 Mar, 2026 |
| John W Raymond | - | 83,963 | 0 | 13 Mar, 2026 |
| John W Raymond | - | 83,963 | 0 | 13 Mar, 2026 |
| Dean P. Acosta | Cca Gro | 75,959 | 0 | 08 Oct, 2025 |
| Craig H Barratt | - | 61,700 | 0 | 28 Aug, 2024 |
| Wendy Thomas | - | 61,145 | 0 | 13 Jun, 2025 |
| Wendy Thomas | - | 61,145 | 0 | 13 Jun, 2025 |
| Kathryn K. Chou | - | 60,839 | 0 | 23 Dec, 2025 |
| Ronald D Bernal | - | 29,650 | 0 | 03 Jul, 2023 |
| William J Jr Teuber | - | 9,413 | 0 | 27 Feb, 2026 |
| William J Jr Teuber | - | 9,413 | 0 | 27 Feb, 2026 |
| Gabrielle B Toledano | - | 9,385 | 0 | 25 Feb, 2026 |
| Jungsang Kim | Chief Technology Officer | 0 | 5,000 | 27 Jul, 2022 |
| Jungsang Kim | Chief Technology Officer | 0 | 5,000 | 27 Jul, 2022 |
| Ronald D Bernal | - | 0 | 4,453 | 26 May, 2023 |
| Jim Frankola | - | 4,413 | 0 | 28 Aug, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 16 Apr, 2026 | Robert T. Cardillo | Common Stock | A | 2,500 | $11.24 | 142,467 | D | M |
| 16 Apr, 2026 | Robert T. Cardillo | Common Stock | A | 2,500 | $44.90 | 139,967 | D | S |
| 16 Apr, 2026 | Robert T. Cardillo | Stock Option (Right to Buy) | D | 2,500 | $0.00 | 12,547 | D | M |
| 11 Mar, 2026 | Paul T Dacier | Common Stock | D | 6,181 | $34.80 | 108,568 | D | F |
| 11 Mar, 2026 | Inder M Singh | Common Stock | D | 8,134 | $34.80 | 423,775 | D | F |
| 12 Mar, 2026 | John W Raymond | Common Stock | D | 2,800 | $33.34 | 83,963 | D | S |
| 11 Mar, 2026 | Masi Niccolo De | Common Stock | D | 20,785 | $34.80 | 1,155,667 | D | F |
| 11 Mar, 2026 | Robert T. Cardillo | Common Stock | D | 904 | $34.80 | 139,967 | D | F |
| 11 Mar, 2026 | Masi Niccolo De | Common Stock | D | 20,785 | $34.80 | 1,155,667 | D | F |
| 12 Mar, 2026 | John W Raymond | Common Stock | D | 2,800 | $33.34 | 83,963 | D | S |
| 11 Mar, 2026 | Inder M Singh | Common Stock | D | 8,134 | $34.80 | 423,775 | D | F |
| 02 Mar, 2026 | Robert T. Cardillo | Common Stock | A | 31,651 | $0.00 | 140,871 | D | A |
| 26 Feb, 2026 | Robert T. Cardillo | Common Stock | A | 2,500 | $11.24 | 117,456 | D | M |
| 27 Feb, 2026 | William J Jr Teuber | Common Stock | A | 3,000 | $38.39 | 9,413 | D | P |
| 27 Feb, 2026 | William J Jr Teuber | Common Stock | A | 3,000 | $38.39 | 9,413 | D | P |
| 26 Feb, 2026 | Robert T. Cardillo | Common Stock | D | 5,165 | $39.44 | 112,291 | D | S |
| 27 Feb, 2026 | Robert T. Cardillo | Common Stock | D | 3,071 | $39.19 | 109,220 | D | F |
| 26 Feb, 2026 | Robert T. Cardillo | Stock Option (Right to Buy) | D | 2,500 | $0.00 | 15,047 | D | M |
| 24 Feb, 2026 | Gabrielle B Toledano | Common Stock | D | 616 | $31.00 | 9,385 | D | S |
| 20 Feb, 2026 | Masi Niccolo De | Common Stock | A | 11,556 | $0.00 | 1,176,452 | D | A |