ASP Isotopes ASPI Insider Ownership

NASDAQ ASPI
$3.82 -0.40 (-9.48%)
As of: Sep 9, 2026 · 3:59 PM EDT

Insider Holdings by Owner

34.88Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026
Insider Ownership
39.39%
0% pp QoQ
Shares Held by Insiders
34.88Mn
filed for Sep 2026
0.00% QoQ
Shares Outstanding
88.55Mn
88,552,309 shares
Direct Holdings
8.32Mn
Indirect: 26.56Mn
Net Shares Traded (QoQ)
0
no net change in Sep 2026
Insiders Holding Shares
9
with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding
Latest
Average ownership
Peak ownership

Shares Purchased/Sold by Insiders

Bought Sold
Latest quarter
Net over range
Buying quarters

Insider Ownership Summary

Quarter ending 30 Sep, 2026

ASPI's three largest insider shareholders as of September 09, 2026 are Jensen Investment Management Ltd Ak (TenPercentOwner, 6.75Mn shares), Jensen Investment Management Ltd Ak (TenPercentOwner, 6.65Mn shares), Jensen Investment Management Ltd Ak (TenPercentOwner, 6.57Mn shares).

Form 4 Holdings

Insiders Holding ASPI

Insiders 9
Shares held 34.88Mn
Of outstanding 39.39%
# Insider Position Direct Indirect Total Share of Insiders Last Filed
1 Jensen Investment Management Ltd Ak TenPercentOwner 0 19,960,622 19,960,622 57.2% 16 Oct, 2024
2 Paul Elliot Mann Chief Executive Officer 5,087,500 0 5,087,500 14.6% 17 Feb, 2023
3 Hendrik Strydom Director, TenPercentOwner 0 3,797,423 3,797,423 10.9% 16 Nov, 2022
4 Sergey Vasnetsov Director 0 2,800,000 2,800,000 8.0% 16 Nov, 2022
5 Joshua Jay Donfeld Director 1,000,000 0 1,000,000 2.9% 16 Nov, 2022
6 Robert Ainscow Chief Financial Officer 900,000 0 900,000 2.6% 17 Feb, 2023
7 Robert John Andrew Ryan Director 537,055 0 537,055 1.5% 26 Feb, 2024
8 Duncan Moore Director 400,000 0 400,000 1.1% 16 Nov, 2022
9 Todd Wider Director 400,000 0 400,000 1.1% 16 Nov, 2022

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

69 Insider Transactions

Source SEC Form 4
Latest quarter Sep 2026
Download Data
Date Insider Position Transaction Shares Price Value Shares Held After Ownership
11 Oct, 2024 Jensen Investment Management Ltd Ak TenPercentOwner Acquired A 30,000 $3.03 $90.77K 6,746,874 Indirect
01 Aug, 2024 Jensen Investment Management Ltd Ak TenPercentOwner Disposed S 31,849 $2.45 $78.01K 6,646,874 Indirect
02 Aug, 2024 Jensen Investment Management Ltd Ak TenPercentOwner Disposed S 80,000 $2.23 $178.30K 6,566,874 Indirect
08 Jul, 2024 Jensen Investment Management Ltd Ak TenPercentOwner Acquired P 70,000 $3.05 $213.36K 6,586,874 Indirect
09 Jul, 2024 Jensen Investment Management Ltd Ak TenPercentOwner Acquired P 30,000 $3.05 $91.50K 6,616,874 Indirect
10 Jul, 2024 Jensen Investment Management Ltd Ak TenPercentOwner Acquired P 61,849 $3.40 $210.23K 6,678,723 Indirect
14 Jan, 2024 Robert John Andrew Ryan Director Acquired A 50,251 518,709 Direct
14 Jan, 2024 Robert John Andrew Ryan Director Acquired A 50,251 518,709 Direct
14 Jan, 2024 Robert John Andrew Ryan Director Acquired A 50,251 518,709 Direct
14 Jan, 2024 Robert John Andrew Ryan Director Acquired A 50,251 518,709 Direct
14 Jan, 2024 Robert John Andrew Ryan Director Acquired A 50,251 518,709 Direct
14 Jan, 2024 Robert John Andrew Ryan Director Acquired A 50,251 518,709 Direct
16 Jan, 2024 Robert John Andrew Ryan Director Acquired P 2,550 $1.92 $4.90K 521,259 Direct
16 Jan, 2024 Robert John Andrew Ryan Director Acquired P 2,550 $1.92 $4.90K 521,259 Direct
16 Jan, 2024 Robert John Andrew Ryan Director Acquired P 2,550 $1.92 $4.90K 521,259 Direct
16 Jan, 2024 Robert John Andrew Ryan Director Acquired P 2,550 $1.92 $4.90K 521,259 Direct
16 Jan, 2024 Robert John Andrew Ryan Director Acquired P 2,550 $1.92 $4.90K 521,259 Direct
16 Jan, 2024 Robert John Andrew Ryan Director Acquired P 2,550 $1.92 $4.90K 521,259 Direct
17 Jan, 2024 Robert John Andrew Ryan Director Acquired P 100 $1.91 $191 521,359 Direct
17 Jan, 2024 Robert John Andrew Ryan Director Acquired P 100 $1.91 $191 521,359 Direct