ASP Isotopes Inc. (ASPI) Insider Ownership

Historic Insider Ownership Trends

Data spanning the past 90 days through February 19, 2026 reveals that ASP Isotopes's three principal insider shareholders consist of TenPercentOwner Jensen Investment Management Ltd Ak (6.75Mn shares), Chief Executive Officer Paul Elliot Mann (5.09Mn shares), Director Hendrik Strydom (3.80Mn shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares Report Date
Jensen Investment Management Ltd Ak 6,746,874 16 Oct, 2024
Paul Elliot Mann Chief Executive Officer 5,087,500 17 Feb, 2023
Hendrik Strydom 3,797,423 16 Nov, 2022
Sergey Vasnetsov 2,800,000 16 Nov, 2022
Joshua Jay Donfeld 1,000,000 16 Nov, 2022
Robert Ainscow Chief Financial Officer 900,000 17 Feb, 2023
Robert John Andrew Ryan 537,055 26 Feb, 2024
Duncan Moore 400,000 16 Nov, 2022
Todd Wider 400,000 16 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.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
11 Oct, 2024 Jensen Investment Management Ltd Ak Common Stock, par value $0.01 per share A 30,000 $3.03 6,746,874 I A
02 Aug, 2024 Jensen Investment Management Ltd Ak Common Stock D 80,000 $2.23 6,566,874 I S
01 Aug, 2024 Jensen Investment Management Ltd Ak Common Stock, par value $0.01 per share ("Common Stock") D 31,849 $2.45 6,646,874 I S
10 Jul, 2024 Jensen Investment Management Ltd Ak Common Stock A 61,849 $3.40 6,678,723 I P
09 Jul, 2024 Jensen Investment Management Ltd Ak Common Stock A 30,000 $3.05 6,616,874 I P
08 Jul, 2024 Jensen Investment Management Ltd Ak Common Stock, par value $0.01 per share ("Common Stock") A 70,000 $3.05 6,586,874 I P
29 Jan, 2024 Robert John Andrew Ryan Common Stock A 15,596 $2.35 537,055 D P
29 Jan, 2024 Robert John Andrew Ryan - - 537,055 D
25 Jan, 2024 Robert John Andrew Ryan Common Stock A 100 $2.54 521,459 D P
25 Jan, 2024 Robert John Andrew Ryan - - 521,459 D
17 Jan, 2024 Robert John Andrew Ryan Common Stock A 100 $1.91 521,359 D P
17 Jan, 2024 Robert John Andrew Ryan - - 521,359 D
16 Jan, 2024 Robert John Andrew Ryan - - 521,259 D
16 Jan, 2024 Robert John Andrew Ryan Common Stock A 2,550 $1.92 521,259 D P
14 Jan, 2024 Robert John Andrew Ryan - - 518,709 D
14 Jan, 2024 Robert John Andrew Ryan Common Stock A 50,251 - 518,709 D A
30 Dec, 2022 Paul Elliot Mann Common Stock A 1,000,000 $0.00 5,087,500 D A
30 Dec, 2022 Robert Ainscow Common Stock A 50,000 $0.00 900,000 D A
15 Nov, 2022 Sergey Vasnetsov Common Stock A 600,000 $0.00 2,800,000 I A
15 Nov, 2022 Todd Wider Common Stock A 200,000 $0.00 400,000 D A