Comparable stake leader
Yuping Huang
SEC ownership of Quantum Computing Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001758009.
Disclosed value leader
Yuping Huang
Comparable rows
50/50
Latest evidence
13 Apr 2026
- Public ticker
- QUBT on Nasdaq
- Parsed ownership sources
- 13D/G, 3/4/5, and 13F
- Largest SEC-reported holder
- Yuping Huang
- Latest 13D/G holder
- Yuping Huang
- Latest parsed ownership date
- 13 Apr 2026
- Issuer CIK
- 0001758009
- Issuer location
- Hoboken, NJ
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
2 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of Quantum Computing Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Yuping Huang
Disclosed value leader
Yuping Huang
Comparable rows
50/50
Latest evidence
13 Apr 2026
13D/G
3/4/5
13F
Lead comparable stake: 10%
13D/G row: Yuping Huang
Showing 1-8 of 50 holder rows.
Quick read
Yuping Huang leads the comparable SEC ownership view at 10%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Yuping Huang's linked filing trail.
Comparable ownership
Top 5
Yuping Huang
10%
BlackRock, Inc.
6.7%
CITADEL ADVISORS LLC
4.9%
Eric Mark Schwartz
0.01%
VANGUARD CAPITAL MANAGEMENT LLC
3.9%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Yuping Huang |
13D/G
3/4/5
CEO and President, Director, 10%+ Owner
|
10%
|
$257,021,810
23,302,068 shares
|
$0 | 03 Apr 2023 |
| BlackRock, Inc. |
13D/G
13F
Company
|
6.7%
|
$154,365,876
15,045,407 shares
|
+$50,780,844 | 31 Dec 2025 |
| CITADEL ADVISORS LLC |
13D/G
13F
Kenneth Griffin · Company
|
4.9%
|
$146,902,081
9,244,939 shares
|
$0 | 25 Sep 2025 |
| Eric Mark Schwartz |
3/4/5
Director
|
0.01%
|
$151,542
22,123 shares
|
— | 13 Apr 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13F
Company
|
3.9%
|
$60,021,721
8,762,295 shares
|
— | 31 Mar 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13F
Company
|
3%
|
$45,964,349
6,710,124 shares
|
— | 31 Mar 2026 |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
Company
|
2.1%
|
$32,203,039
4,700,305 shares
|
— | 31 Mar 2026 |
| STATE STREET CORP |
13F
Company
|
2%
|
$30,940,217
4,516,820 shares
|
— | 31 Mar 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$17,458,857.
Buys
$0
Insiders: 0
Sells
$17,458,857
Insiders: 6
Net
-$17,458,857
Shares: -1,235,771
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 1,235,771
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 81,122 | $0 | $648,390 | -$648,390 |
| 6-9 | 0 | 5,000 | $0 | $84,410 | -$84,410 |
| 9-12 | 0 | 1,149,649 | $0 | $16,726,057 | -$16,726,057 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-14 of 14 reporting-owner rows connected to Quantum Computing Inc.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
14
Largest Forms 3/4/5 holder
Yuping Huang
Net 12M change
-$17,458,856
Latest report
28 May 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Yuping Huang | CEO and President, Director, 10%+ Owner | $143,481,990 | -$14,415,000 | -9.1% | Median | 28 May 2026 |
| William J. McGann | Ceo | $10,595,451 | Mixed | 02 Apr 2025 | ||
| Christopher Bruce Roberts | CFO and General Counsel | $8,818,094 | -$614,499 | -6.5% | Filing P/S | 10 Mar 2026 |
| Christopher Boehmler | Chief Financial Officer | $2,795,169 | Mixed | 12 Jun 2025 | ||
| Robert Liscouski | Director | $1,087,961 | Mixed | 18 Apr 2024 | ||
| Milan Begliarbekov | Chief Operating Officer | $344,650 | -$33,891 | -9% | Median | 28 May 2026 |
| Pouya Dianat | Chief Revenue Officer | $169,701 | -$266,808 | -61% | Median | 28 May 2026 |
| Robert B. Fagenson | Director | $151,542 | -$1,556,005 | -91% | Median | 13 Apr 2026 |
| Javad Shabani | Director | $151,542 | -$572,653 | -79% | Median | 13 Apr 2026 |
| Eric Mark Schwartz | Director | $151,542 | Median | 13 Apr 2026 | ||
| Carl Scott Weimer | Director | $151,542 | Median | 13 Apr 2026 | ||
| Michael C. Turmelle | Director | $151,542 | Median | 13 Apr 2026 | ||
| David Charles Morris | Chief Revenue Officer, Director | Mixed | 17 Oct 2022 | |||
| Bertrand Velge | Director | Mixed | 26 Jan 2023 |
Recent insider transactions for Quantum Computing Inc.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Yuping Huang | QUBT | Common Stock | Award | 0.28% | 58,558 | 20,946,276 | 28 May 2026 | Direct | ||
| Yuping Huang | QUBT | Options to Purchase Shares of Common Stock | Award | 5.69% | 23,588 | 437,938 | 28 May 2026 | Direct | ||
| Pouya Dianat | QUBT | Common Stock | Award | 24,774 | 24,774 | 28 May 2026 | Direct | |||
| Pouya Dianat | QUBT | Options to Purchase Shares of Common Stock | Award | 27.2% | 9,979 | 46,646 | 28 May 2026 | Direct | ||
| Milan Begliarbekov | QUBT | Common Stock | Award | 97% | 24,774 | 50,314 | 28 May 2026 | Direct | ||
| Milan Begliarbekov | QUBT | Options to Purchase Shares of Common Stock | Award | 3.87% | 9,979 | 267,579 | 28 May 2026 | Direct | ||
| Carl Scott Weimer | QUBT | Common Stock | Award | 22,123 | 22,123 | 13 Apr 2026 | Direct | |||
| Michael C. Turmelle | QUBT | Common Stock | Award | 22,123 | 22,123 | 13 Apr 2026 | Direct | |||
| Javad Shabani | QUBT | Common Stock | Award | 22,123 | 22,123 | 13 Apr 2026 | Direct | |||
| Eric Mark Schwartz | QUBT | Common Stock | Award | 22,123 | 22,123 | 13 Apr 2026 | Direct | |||
| Robert B. Fagenson | QUBT | Common Stock | Award | 22,123 | 22,123 | 13 Apr 2026 | Direct | |||
| Christopher Bruce Roberts | QUBT | Common Stock | Sale | -0.83% | $73,495 | $7.85 | -9,360 | 1,123,038 | 11 Mar 2026 | Direct |
| Christopher Bruce Roberts | QUBT | Common Stock | Sale | -5.74% | $541,005 | $7.85 | -68,902 | 1,132,398 | 10 Mar 2026 | Direct |
| Christopher Bruce Roberts | QUBT | Common Stock | Options Exercise | 49.9% | 400,000 | 1,201,300 | 10 Mar 2026 | Direct | ||
| Christopher Bruce Roberts | QUBT | Employee Stock Option (right to buy) | Options Exercise | -57.1% | -400,000 | 300,000 | 10 Mar 2026 | Direct | ||
| Milan Begliarbekov | QUBT | Common Stock | Sale | -10.6% | $33,891 | $11.85 | -2,860 | 24,240 | 07 Jan 2026 | Direct |
| Milan Begliarbekov | QUBT | Common Stock | Award | 100% | 13,550 | 27,100 | 31 Dec 2025 | Direct | ||
| Robert B. Fagenson | QUBT | Common Stock | Sale | -100% | $84,410 | $16.88 | -5,000 | 0 | 15 Sep 2025 | See foonote |
| Yuping Huang | QUBT | Common Stock | Gift | -1.88% | -400,000 | 20,887,718 | 12 Sep 2025 | Direct | ||
| Robert B. Fagenson | QUBT | Common Stock | Sale | -75% | $234,362 | $15.62 | -15,000 | 5,000 | 12 Sep 2025 | See foonote |
| Robert B. Fagenson | QUBT | Common Stock | Sale | -60% | $468,882 | $15.63 | -30,000 | 20,000 | 11 Sep 2025 | See foonote |
| Robert B. Fagenson | QUBT | Common Stock | Sale | -41.2% | $543,053 | $15.52 | -35,000 | 50,000 | 10 Sep 2025 | See foonote |
| Robert B. Fagenson | QUBT | Common Stock | Sale | -15% | $225,298 | $15.02 | -15,000 | 85,000 | 09 Sep 2025 | See foonote |
| Javad Shabani | QUBT | Common Stock | Sale | -100% | $266,653 | $15.26 | -17,474 | 0 | 08 Sep 2025 | Direct |
| Javad Shabani | QUBT | Common Stock | Sale | -53.4% | $306,000 | $15.30 | -20,000 | 17,474 | 05 Sep 2025 | Direct |
| Yuping Huang | QUBT | Common Stock | Sale | -4.49% | $14,415,000 | $14.42 | -1,000,000 | 21,287,718 | 04 Sep 2025 | Direct |
| Pouya Dianat | QUBT | Common Stock | Sale | -100% | $266,808 | $15.53 | -17,175 | 0 | 25 Aug 2025 | Direct |
| Javad Shabani | QUBT | Common Stock | Options Exercise | 37,474 | 37,474 | 18 Aug 2025 | Direct | |||
| Javad Shabani | QUBT | Options to Purchase Shares of Common Stock | Disposed to Issuer | -79.6% | -40,000 | 10,219 | 18 Aug 2025 | Direct | ||
| Pouya Dianat | QUBT | Common Stock | Options Exercise | 17,175 | 17,175 | 18 Aug 2025 | Direct | |||
| Pouya Dianat | QUBT | Options to Purchase Shares of Common Stock | Disposed to Issuer | -33.3% | -18,333 | 36,667 | 18 Aug 2025 | Direct | ||
| Christopher Bruce Roberts | QUBT | Options to Purchase Shares of Common Stock | Award | 75% | 300,000 | 700,000 | 11 Jul 2025 | Direct | ||
| Yuping Huang | QUBT | Common Stock | Options Exercise | 4.95% | 1,050,812 | 22,287,718 | 30 Jun 2025 | Direct | ||
| Christopher Boehmler | QUBT | Common Stock | Options Exercise | 351,152 | 351,152 | 13 Jun 2025 | Direct | |||
| Christopher Boehmler | QUBT | Options to Purchase Shares of Common Stock | Disposed to Issuer | -100% | -403,236 | 0 | 13 Jun 2025 | Direct |
* marks a reported price that did not pass the local price check.