Comparable stake leader
Sumit Kapur
SEC ownership of Zapata Quantum, Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001843714.
Disclosed value leader
Clark Golestani
Comparable rows
3/18
Latest evidence
01 May 2026
- Public ticker
- ZPTA on OTC
- Parsed ownership sources
-
3/4/5 and 13D/G
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
Sumit Kapur
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
3 of 18
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
Sumit Kapur
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
01 May 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001843714
- Issuer location
- Boston, MA
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of Zapata Quantum, 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
Sumit Kapur
Disclosed value leader
Clark Golestani
Comparable rows
3/18
Latest evidence
01 May 2026
3/4/5
13D/G
Lead comparable stake: 21%
15 rows are not safely comparable across share classes.
13D/G row: Sumit Kapur
Showing 1-8 of 18 holder rows.
Quick read
Sumit Kapur leads the comparable SEC ownership view at 21%.
3 of 18 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 Sumit Kapur's linked filing trail.
Comparable ownership
Top 3
Sumit Kapur
21%
Clark Golestani
21%
Andretti Autosport Holding Compan...
5.8%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 18 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Sumit Kapur |
3/4/5
13D/G
CEO and CFO, Director
|
21%
from 13D/G
|
$51,350,000
38,750,000 shares
mixed-class rows
|
— | 01 May 2026 |
| Clark Golestani |
3/4/5
13D/G
Director
|
21%
from 13D/G
|
$51,549,535
34,876,288 shares
mixed-class rows
|
— | 01 May 2026 |
| Andretti Autosport Holding Company, LLC |
13D/G
|
5.8%
|
—
9,479,000 shares
|
$0 | 05 Dec 2025 |
| Michael M. Andretti |
3/4/5
10%+ Owner
|
—
class O/S missing
|
—
1,746,122 shares
|
— | 18 Jul 2024 |
| William J. Sandbrook |
3/4/5
10%+ Owner
|
—
class O/S missing
|
—
1,618,567 shares
|
— | 18 Jul 2024 |
| William E. Klitgaard |
3/4/5
Director
|
—
mixed-class rows
|
$2,353,629
2,426,348 shares
mixed-class rows
|
— | 01 May 2026 |
| Christopher Savoie |
3/4/5
CEO and President, Director
|
—
mixed-class rows
|
—
1,229,727 shares
mixed-class rows
|
— | 28 Mar 2024 |
| William Matthew Brown |
3/4/5
Director
|
—
mixed-class rows
|
—
1,193,626 shares
mixed-class rows
|
— | 18 Jul 2024 |
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
Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 03 Aug 2025.
Buys
$0
Insiders: 0
Sells
$0
Insiders: 0
Net
$0
Shares: 0
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-18 of 18 reporting-owner rows connected to Zapata Quantum, Inc.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
18
Largest Forms 3/4/5 holder
Clark Golestani
Net 12M change
$0
Latest report
01 May 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Clark Golestani | Director | $51,549,535 | Mixed | 01 May 2026 | ||
| Sumit Kapur | CEO and CFO, Director | $51,350,000 | Mixed | 01 May 2026 | ||
| William E. Klitgaard | Director | $2,353,629 | Mixed | 01 May 2026 | ||
| Andretti Sponsor LLC | Director, 10%+ Owner | $0 | Mixed | 18 Jul 2024 | ||
| Yudong Cao | Chief Technology Officer | Mixed | 28 Mar 2024 | |||
| Jeff Huber | Director | Mixed | 10 Jul 2024 | |||
| Raj Ratnakar | Director | Mixed | 10 Jul 2024 | |||
| Michael M. Andretti | 10%+ Owner | Mixed | 18 Jul 2024 | |||
| Dana Sue Jones | Director | Mixed | 10 Jul 2024 | |||
| William Matthew Brown | Director | Mixed | 18 Jul 2024 | |||
| James W. Keyes | Director | Mixed | 28 Mar 2024 | |||
| John J. Romanelli | Director | Mixed | 28 Mar 2024 | |||
| Gerald D. Putnam | Director | Mixed | 28 Mar 2024 | |||
| Cassandra S. Lee | Director | Mixed | 28 Mar 2024 | |||
| William J. Sandbrook | 10%+ Owner | Mixed | 18 Jul 2024 | |||
| Zakary C. Brown | Director | Mixed | 28 Mar 2024 | |||
| Christopher Savoie | CEO and President, Director | Mixed | 28 Mar 2024 | |||
| Mimi Flanagan | Chief Financial Officer | Mixed | 28 Mar 2024 |
Recent insider transactions for Zapata Quantum, 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Clark Golestani | Stock Options (Right to Buy) | Award | 1,000,000 | 1,000,000 | 09 Oct 2025 | Direct | ||||
| Sumit Kapur | Stock Options (Right to Buy) | Award | 6,000,000 | 5,000,000 | 09 Oct 2025 | Direct | ||||
| William E. Klitgaard | Stock Options (Right to Buy) | Award | 1,000,000 | 1,000,000 | 08 Oct 2025 | Direct |
* marks a reported price that did not pass the local price check.