IonQ, Inc. (IONQ) has 20 known insider and institutional holders on record. The largest holder is Sonsini Peter W. with 26,306,693 shares. Other notable holders include GV 2016 GP, L.L.C. and New Enterprise Associates 15, L.P..
Over the last 12 months, insiders have made 73 transactions in IONQ stock — 23 buys (valued at $224.79K) and 25 sells (valued at $310.24M). Insider selling has exceeded buying during this period.
IONQ Insider Ownership
Top Holder
Sonsini Peter W.
26,306,693 shares
Buys (12 mo)
23
$224.79K value
Sells (12 mo)
25
$310.24M value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Sonsini Peter W. |
Director |
26,306,693 |
2022-05-31 |
|
| 2 |
Gv 2016 Gp, L.l.c. |
10 Percent Owner |
17,350,506 |
2022-04-08 |
|
| 3 |
New Enterprise Associates 15, L.p. |
Director |
14,614,829 |
2022-11-18 |
|
| 4 |
Dmy Sponsor Iii, Llc |
10 Percent Owner |
7,425,000 |
2020-12-29 |
|
| 5 |
Gv 2019 Gp, L.l.c. |
10 Percent Owner |
4,556,532 |
2022-04-08 |
|
| 6 |
Monroe Christopher |
Chief Scientist |
3,897,970 |
2023-08-17 |
|
| 7 |
De Masi Niccolo |
President and CEO |
1,155,667 |
2026-03-13 |
|
| 8 |
Kim Jungsang |
Chief Technology Officer |
900,000 |
2024-03-15 |
|
| 9 |
Kramer Thomas G. |
Chief Financial Officer |
473,302 |
2025-09-05 |
|
| 10 |
Alameddine Rima |
Chief Revenue Officer |
432,616 |
2025-11-21 |
|
| 11 |
Singh Inder M |
CFO & COO |
423,775 |
2026-03-13 |
|
| 12 |
Babinski Laurie A. |
General Counsel and Secretary |
246,889 |
2023-06-05 |
|
| 13 |
Millard Scott Francis |
Chief Business Officer |
216,457 |
2025-12-15 |
|
| 14 |
You Harry L. |
Director |
168,041 |
2024-06-10 |
|
| 15 |
Scannell William F |
Director |
140,560 |
2025-06-18 |
|
| 16 |
Cardillo Robert T. |
Other: Executive Chair, Ionq Federal |
139,967 |
2026-03-13 |
|
| 17 |
Dacier Paul T |
CAO, CLO and Secretary |
108,568 |
2026-03-13 |
|
| 18 |
Chapman Peter Hume |
Executive Chair |
107,661 |
2025-06-20 |
|
| 19 |
Raymond John W |
Other: Special Advisor |
83,963 |
2026-03-13 |
|
| 20 |
Acosta Dean P. |
Cca & Gro |
75,959 |
2025-10-08 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-03-12 |
Raymond John W |
Other: Special Advisor |
Informative Sell |
2,800 |
$33.34 |
$93.35K |
| 2026-03-11 |
Cardillo Robert T. |
Other: Executive Chair, Ionq Federal |
Tax Withholding of RSU |
904 |
$34.80 |
$31.46K |
| 2026-03-11 |
Singh Inder M |
CFO & COO |
Tax Withholding of RSU |
8,134 |
$34.80 |
$283.08K |
| 2026-03-11 |
De Masi Niccolo |
President and CEO |
Tax Withholding of RSU |
20,785 |
$34.80 |
$723.36K |
| 2026-03-11 |
Dacier Paul T |
CAO, CLO and Secretary |
Tax Withholding of RSU |
6,181 |
$34.80 |
$215.11K |
| 2026-03-02 |
Cardillo Robert T. |
Other: Executive Chair, Ionq Federal |
RSU Award |
31,651 |
- |
- |
| 2026-02-27 |
Cardillo Robert T. |
Other: Executive Chair, Ionq Federal |
Tax Withholding of RSU |
3,071 |
$39.19 |
$120.36K |
| 2026-02-26 |
Cardillo Robert T. |
Other: Executive Chair, Ionq Federal |
Option Exercise (Sell) |
2,500 |
$11.24 |
$28.1K |
| 2026-02-27 |
Teuber William J Jr |
Director |
Informative Buy |
3,000 |
$38.39 |
$115.16K |
| 2026-02-24 |
Toledano Gabrielle B |
Director |
Informative Sell |
616 |
$31.00 |
$19.1K |
| 2026-02-20 |
Singh Inder M |
CFO & COO |
RSU Award |
3,708 |
- |
- |
| 2026-02-20 |
De Masi Niccolo |
President and CEO |
RSU Award |
11,556 |
- |
- |
| 2026-02-20 |
Dacier Paul T |
CAO, CLO and Secretary |
RSU Award |
4,427 |
- |
- |
| 2025-12-22 |
Chou Kathryn K. |
Director |
Option Exercise (Sell) |
5,000 |
$4.61 |
$23.05K |
| 2025-12-11 |
Millard Scott Francis |
Chief Business Officer |
Tax Withholding of RSU |
19,586 |
$50.49 |
$988.83K |
| 2025-12-11 |
De Masi Niccolo |
President and CEO |
Tax Withholding of RSU |
16,290 |
$50.49 |
$822.43K |
| 2025-12-11 |
Dacier Paul T |
CAO, CLO and Secretary |
Tax Withholding of RSU |
4,132 |
$50.49 |
$208.61K |
| 2025-12-11 |
Chou Kathryn K. |
Director |
Option Exercise (Sell) |
20,000 |
$4.61 |
$92.2K |
| 2025-12-11 |
Singh Inder M |
CFO & COO |
Tax Withholding of RSU |
12,553 |
$50.49 |
$633.76K |
| 2025-12-04 |
Millard Scott Francis |
Chief Business Officer |
Unknown |
- |
- |
- |
| 2025-11-20 |
Alameddine Rima |
Chief Revenue Officer |
Informative Sell |
100,000 |
$46.89 |
$4.69M |
| 2025-11-17 |
Raymond John W |
Other: Special Advisor |
RSU Award |
83,700 |
- |
- |
| 2025-11-11 |
Teuber William J Jr |
Director |
Informative Buy |
2,000 |
$54.82 |
$109.63K |
| 2025-11-10 |
Singh Inder M |
CFO & COO |
RSU Award |
274,947 |
- |
- |
| 2025-10-06 |
Acosta Dean P. |
Cca & Gro |
RSU Award |
75,959 |
- |
- |
