Comparable stake leader
ASP Isotopes Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0002031009.
Comparable stake leader
ASP Isotopes Inc.
Disclosed value leader
ASP Isotopes Inc.
Comparable rows
2/24
Latest evidence
30 Jun 2026
Ownership snapshot
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.
Quick read
2 of 24 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.
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| ASP Isotopes Inc. |
13D/G
|
37%
Reported 13D/G
· 29 Aug 2025
|
$5,609,588
6,164,382 shares
|
$0 | 29 Aug 2025 |
| Philadelphia Financial Management of San Francisco, LLC |
13F
13D/G
Company
|
8.2%
Reported 13D/G
· 30 Jun 2026
|
$3,205,214
1,037,286 shares
|
— | 30 Jun 2026 |
| Ngo Chiu Lam |
3/4/5
CEO, Director
|
—
denominator unverified
|
$1,060,771
318,550 shares
|
— | 18 Mar 2026 |
| PEAK6 LLC |
13F
Company
|
—
denominator unverified
|
$937,957
303,546 shares
|
— | 30 Jun 2026 |
| Rathbones Group PLC |
13F
Company
|
—
denominator unverified
|
$884,707
286,313 shares
|
— | 30 Jun 2026 |
| MERCER GLOBAL ADVISORS INC /ADV |
13F
Company
|
—
denominator unverified
|
$223,741
72,408 shares
|
— | 30 Jun 2026 |
| Cambridge Investment Research Advisors, Inc. |
13F
Company
|
—
denominator unverified
|
$170,000
55,098 shares
|
— | 30 Jun 2026 |
| Wealthspire Advisors, LLC |
13F
Company
|
—
denominator unverified
|
$119,577
38,698 shares
|
— | 30 Jun 2026 |
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
No eligible buy or sell activity is available for this window. No eligible Buy or Sell transactions are available in this dataset since 29 Oct 2025.
| 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
Showing 1-6 of 6 reporting-owner rows connected to Skyline Builders Group Holding Ltd. Open a relationship link for the CIK-to-CIK filing trail.
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Ngo Chiu Lam | CEO, Director | $1,060,771 | Mixed | 18 Mar 2026 | ||
| Chun Kit Yu | Director | Mixed | 23 Jan 2025 | |||
| Vuk Jeremic | Director | Mixed | 31 Mar 2026 | |||
| Chun Man Lo | Chief Financial Officer | Mixed | 18 Mar 2026 | |||
| John Melkon | Director | Mixed | 15 Jul 2026 | |||
| Sze Man Chan | Interim CFO | Mixed | 01 Jun 2026 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Ngo Chiu Lam | SKBL | Class A Ordinary Shares | 0 | 318,550 | 18 Mar 2026 | Mr. Lam is the sole owner of Supreme Development (BVI) Holdings Limited. |