Activity Companies Alerts About

Thomas D. Logan owns 3.96% of Mirion Technologies

9,858,930 shares as of the May 6, 2026 filing, worth $147M at the latest close.

MIR · $3.7B market cap · Founder-led
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Free.
The stake
3.96%
worth $147M at the latest close
Stake rank
#355
by dollar value of the stake
Last sale
441 days ago
Aug 12, 2025
Last buy
None
no purchases since 2024

Thomas D. Logan owns 3.96% of Mirion Technologies, Inc.: 9,858,930 of 249,037,647 shares, worth about $147M at the 2026-10-26 close. The stake has moved from 1.16% in 2021 to 3.96% on 2026-06-30, across 7 sales and 0 purchases that moved it since 2016. The last trade that moved it was a discretionary sale of $10.7M on 2025-08-12.

How the stake is held

each class as its filings last stated it
SHARES
OF THE STAKE
COMMON STOCK · stated Apr 1, 2022 · Form 4 ↗
4,745,475
48.1%
HELD DIRECTLY
2,149,104
21.8%
HELD INDIRECTLY · By Trust · last stated Apr 2022
2,596,371
26.3%
CLASS A · stated May 6, 2026 · Form 4 ↗
3,569,438
36.2%
HELD DIRECTLY
52,209
0.5%
HELD INDIRECTLY · Logan Family Trust
3,517,229
35.7%
CLASS B · stated May 6, 2026 · Form 4 ↗
1,544,017
15.7%
HELD DIRECTLY
1,544,017
15.7%
THE STAKE
9,858,930
3.96%