As of March 23, 2026, IonQ's top three insider holders are Enterprise Associates 15, L.P. New (TenPercentOwner, 14.61Mn shares), Partners 15, L.P. Nea (TenPercentOwner, 14.61Mn shares), Christopher Monroe (Chief Scientist, 3.90Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| 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 |
| Harry L. You | 0 | 2,597,500 | 10 May, 2022 | |
| 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 |
| Thomas G. Kramer | Chief Financial Officer | 473,302 | 0 | 05 Sep, 2025 |
| Inder M Singh | Cfo Coo | 423,775 | 0 | 13 Mar, 2026 |
| Scott Francis Millard | Chief Business Officer | 216,457 | 0 | 15 Dec, 2025 |
| Harry L. You | 168,041 | 0 | 10 Jun, 2024 | |
| William F Scannell | 140,560 | 0 | 18 Jun, 2025 | |
| Robert T. Cardillo | 139,967 | 0 | 13 Mar, 2026 | |
| Paul T Dacier | Cao, Clo And Secretary | 108,568 | 0 | 13 Mar, 2026 |
| John W Raymond | 83,963 | 0 | 13 Mar, 2026 | |
| Wendy Thomas | 61,145 | 0 | 13 Jun, 2025 | |
| Forest Baskett | 0 | 9,525 | 18 Nov, 2022 | |
| William J Jr Teuber | 9,413 | 0 | 27 Feb, 2026 | |
| Gabrielle B Toledano | 9,385 | 0 | 25 Feb, 2026 | |
| Mohamad Makhzoumi | 1,654 | 1,047 | 18 Nov, 2022 | |
| Scott D Sandell | 0 | 1,141 | 18 Nov, 2022 | |
| Anthony A. Jr. Florence | 0 | 1,047 | 18 Nov, 2022 | |
| Peter W. Sonsini | 0 | 70 | 18 Nov, 2022 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 11 Mar, 2026 | Robert T. Cardillo | Common Stock | D | 904 | $34.80 | 139,967 | D | F |
| 11 Mar, 2026 | Inder M Singh | Common Stock | D | 8,134 | $34.80 | 423,775 | D | F |
| 11 Mar, 2026 | Paul T Dacier | Common Stock | D | 6,181 | $34.80 | 108,568 | 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 |
| 02 Mar, 2026 | Robert T. Cardillo | Common Stock | A | 31,651 | $0.00 | 140,871 | D | A |
| 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 | A | 2,500 | $11.24 | 117,456 | D | M |
| 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 |
| 20 Feb, 2026 | Paul T Dacier | Common Stock | A | 4,427 | $0.00 | 114,749 | D | A |
| 20 Feb, 2026 | Inder M Singh | Common Stock | A | 3,708 | $0.00 | 431,909 | D | A |
| 11 Dec, 2025 | Scott Francis Millard | Common Stock | D | 19,586 | $50.49 | 216,457 | D | F |
| 11 Dec, 2025 | Paul T Dacier | Common Stock | D | 4,132 | $50.49 | 110,322 | D | F |
| 11 Dec, 2025 | Masi Niccolo De | Common Stock | D | 16,290 | $50.49 | 1,164,896 | D | F |
| 11 Dec, 2025 | Inder M Singh | Common Stock | D | 12,553 | $50.49 | 428,201 | D | F |
| 17 Nov, 2025 | John W Raymond | Common Stock | A | 83,700 | $0.00 | 86,763 | D | A |