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Thomas D. Logan

MIR
CHIEF EXECUTIVE OFFICER · MIRION TECHNOLOGIES, INC. · CIK 0001486259
FILING MIX · LIFETIME36%/64%
BUYS
18
SELLS
32
TOTAL VALUE
$22.02M
COMPANIES
1
ACTIVE SINCE
Oct 2021
HOLDINGS NOW
52,209
AVG SELL PX
$18.21
TRADE KIND
SHOWING 50 / 50
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
8 backtested trades · 8 horizons · 8 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Thomas D. Logan, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d8+75.00%-2.13%+0.08%-2.21%-2.92%—
14d8+75.00%-0.70%+0.02%-0.72%-3.70%—
30d8+50.00%+6.28%+2.22%+4.05%-2.54%—
60d8+0.00%+15.74%+3.48%+12.25%+3.96%—
90d8+12.50%+27.94%+6.02%+21.92%+20.53%—
180d8+12.50%+37.37%+6.79%+30.58%+42.38%—
1y8(2 pending)+0.00%+90.82%+15.59%+75.23%+73.03%—
2y8(6 pending)+0.00%+69.48%+35.16%+36.66%+36.66%—
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
MIR · 52,209 shares · as of May 6, 2026
01,039,1842,078,3683,117,5514,156,73520222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 18 buys / 32 sellsCOVERAGE · 19 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
MIR
MIRION TECHNOLOGIES, INC.
SALEGRANT
Gift
311,851——52,209May 6, 2026May 7, 2026 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
SALE
Chief Executive Officer
22,614$18.59$420.4K364,060Apr 1, 2026Apr 2, 2026 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
SALE
Chief Executive Officer
127,184$21.61$2.75M3,480,486Mar 2, 2026Mar 3, 2026 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
SALEGRANT
Gift
3,093,812——386,674Mar 2, 2026Mar 3, 2026 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
PURCHASEGRANT
Stock grant
318,632——3,607,670Mar 2, 2026Mar 3, 2026 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
SALE
Chief Executive Officer
20,650$21.61$446.2K3,289,038Mar 1, 2026Mar 3, 2026 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
SALE
Chief Executive Officer
39,863$23.76$947.1K3,309,688Dec 27, 2025Dec 29, 2025 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
SALEGRANT
Gift
106,188——3,349,551Oct 30, 2025Nov 3, 2025 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
SALE
Chief Executive Officer
175,000$21.79$3.81M3,567,305Aug 12, 2025Aug 13, 2025 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
SALE
Chief Executive Officer
325,000$21.31$6.93M3,742,305Aug 11, 2025Aug 13, 2025 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
SALE
Chief Executive Officer
89,430$17.43$1.56M4,067,305May 14, 2025May 16, 2025 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
PURCHASEGRANT
Stock grant
213,234——4,156,735May 14, 2025May 16, 2025 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
SALE
Chief Executive Officer
54,143$14.50$785.1K3,943,501Apr 1, 2025Apr 3, 2025 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
SALE
Chief Executive Officer
20,543$15.53$319.0K3,997,644Mar 1, 2025Mar 4, 2025 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
SALE
Chief Executive Officer
76,118$15.10$1.15M4,018,187Feb 25, 2025Feb 27, 2025 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
PURCHASEGRANT
Stock grant
179,102——4,094,305Feb 25, 2025Feb 27, 2025 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
SALE
Chief Executive Officer
40,587$18.10$734.6K3,915,203Dec 27, 2024Dec 31, 2024 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
PURCHASE
Chief Executive Officer
2,400,000——3,955,790Dec 17, 2024Dec 19, 2024 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
SALE
Chief Executive Officer
2,400,000——0Dec 17, 2024Dec 19, 2024 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
PURCHASE
Chief Executive Officer
800,000——1,555,790Nov 12, 2024Nov 14, 2024 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
SALE
Chief Executive Officer
800,000——2,400,000Nov 12, 2024Nov 14, 2024 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
PURCHASEGRANT
Stock grant
7,500——7,500Oct 24, 2024Oct 28, 2024 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
SALE
Chief Executive Officer
7,500——2,551,371Oct 24, 2024Oct 28, 2024 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
SALE
Chief Executive Officer
7,500$14.11$105.8K0Oct 24, 2024Oct 28, 2024 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
SALE
Chief Executive Officer
7,500$10.47$78.5K0Sep 24, 2024Sep 26, 2024 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
SALE
Chief Executive Officer
7,500——2,558,871Sep 24, 2024Sep 26, 2024 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
PURCHASEGRANT
Stock grant
7,500——7,500Sep 24, 2024Sep 26, 2024 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
SALE
Chief Executive Officer
7,500$11.00$82.5K0Aug 23, 2024Aug 27, 2024 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
PURCHASEGRANT
Stock grant
7,500——7,500Aug 23, 2024Aug 27, 2024 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
SALE
Chief Executive Officer
7,500——2,566,371Aug 23, 2024Aug 27, 2024 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
PURCHASEGRANT
Stock grant
7,500——7,500Jul 24, 2024Jul 26, 2024 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
SALE
Chief Executive Officer
7,500$10.87$81.5K0Jul 24, 2024Jul 26, 2024 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
SALE
Chief Executive Officer
7,500——2,573,871Jul 24, 2024Jul 26, 2024 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
SALE10b5-1
10b5-1 plan
7,500$10.89$81.7K0Jun 24, 2024Jun 25, 2024 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
SALE
Chief Executive Officer
7,500——2,581,371Jun 24, 2024Jun 25, 2024 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
PURCHASEGRANT
Stock grant
7,500——7,500Jun 24, 2024Jun 25, 2024 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
PURCHASEGRANT
Stock grant
7,500——7,500May 28, 2024May 30, 2024 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
SALE
Chief Executive Officer
7,500——2,588,871May 28, 2024May 30, 2024 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
SALE10b5-1
10b5-1 plan
7,500$10.86$81.5K0May 28, 2024May 30, 2024 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
SALE
Chief Executive Officer
56,098$11.37$637.8K755,790Apr 1, 2024Apr 3, 2024 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
PURCHASEGRANT
Stock grant
156,626——811,888Mar 1, 2024Mar 5, 2024 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
SALE
Chief Executive Officer
47,309$10.45$494.4K655,262Dec 27, 2023Dec 28, 2023 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
SALE
Chief Executive Officer
36,862$8.54$314.8K702,571Apr 1, 2023Apr 4, 2023 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
PURCHASEGRANT
Stock grant
167,701——739,433Mar 29, 2023Mar 31, 2023 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
SALE
Chief Executive Officer
32,995$6.49$214.1K572,092Dec 27, 2022Dec 28, 2022 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
PURCHASEGRANT
Stock grant
223,408——2,149,104Apr 1, 2022Apr 5, 2022 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
PURCHASEGRANT
Stock grant
381,679——1,925,696Dec 27, 2021Dec 29, 2021 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
PURCHASEGRANT
Stock grant
865,461——865,461Oct 20, 2021Oct 22, 2021 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
PURCHASEGRANT
Stock grant
1,544,017——1,544,017Oct 20, 2021Oct 22, 2021 ↗View →
MIR
MIRION TECHNOLOGIES, INC.
PURCHASEGRANT
Stock grant
865,455——865,455Oct 20, 2021Oct 22, 2021 ↗View →
Other insiders · MIR
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About this filer
CIK 0001486259
ROLE
Chief Executive Officer
PRIMARY
MIR
COMPANIES
1
ACTIVE SINCE
Oct 2021
MARKETPEEL · /INSIDER/0001486259DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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