Klein Michael Stuart

Director at Churchill Capital Corp IX/Cayman · on record since May 8, 2024
See Remarks at Churchill Capital Corp IX/Cayman · on record since May 8, 2024
10% owner at Churchill Capital Corp IX/Cayman · on record since May 8, 2024
Director at Infleqtion, Inc. · on record since May 19, 2025
See Remarks at Infleqtion, Inc. · on record since May 19, 2025
10% owner at Infleqtion, Inc. · on record since May 19, 2025
10% owner at Churchill Capital Corp XII · on record since Apr 28, 2026
Co-CEO Citi Markets & Banking at CITIGROUP INC · on record since Jan 24, 2008
Director at Churchill Capital Corp XI · on record since Dec 19, 2025
See Remarks at Churchill Capital Corp XI · on record since Dec 19, 2025
10% owner at Churchill Capital Corp XI · on record since Dec 19, 2025
Director at IHS Inc. · on record since Dec 3, 2008
Director at Churchill Capital Corp XII · on record since Apr 28, 2026
See Remarks at Churchill Capital Corp XII · on record since Apr 28, 2026
Director at Claritev Corp · on record since May 1, 2026
Director at Churchill Capital Corp XIII · on record since Jul 30, 2026
See Remarks at Churchill Capital Corp XIII · on record since Jul 30, 2026
10% owner at Churchill Capital Corp XIII · on record since Jul 30, 2026
Director at CALGON CARBON Corp · on record since Sep 6, 2018
10% owner at · on record since Sep 6, 2018
Director at · on record since Jun 26, 2019
Chief Executive Officer at · on record since Jun 26, 2019
10% owner at · on record since Jun 26, 2019
Chief Executive Officer at · on record since Feb 13, 2020
10% owner at · on record since Feb 13, 2020
Director at · on record since Jul 29, 2020
See Remarks at · on record since Jul 29, 2020
10% owner at · on record since Jul 29, 2020
Director at · on record since Jul 24, 2020
10% owner at · on record since Dec 22, 2020
Director at · on record since Dec 15, 2020
See Remarks at · on record since Dec 15, 2020
Director at · on record since Feb 11, 2021
See Remarks at · on record since Feb 11, 2021
10% owner at · on record since Feb 11, 2021
Director at · on record since Feb 11, 2021
See Remarks at · on record since Feb 11, 2021
10% owner at · on record since Feb 11, 2021
Director at · on record since Jul 14, 2021
Chairman at · on record since Jul 14, 2021
10% owner at · on record since Jul 14, 2021

Insider trading activity of Klein Michael Stuart

Transactions on record: 64; since Mar 1, 2007

Open-market buys: 8; $31.8M

Open-market sells: 6; $10.5M

Companies traded: 10; last filing Aug 5, 2026

Figures computed from official regulatory filings — .

Companies where Klein Michael Stuart has traded

1 tx · $3.5M · Aug 5, 2026
16 tx · Jul 2, 2026
15 tx · $19.8M · May 1, 2026
1 tx · $3.5M · Apr 29, 2026
3 tx · Feb 17, 2026
1 tx · $5M · Dec 19, 2025
9 tx · $23.9M · Sep 24, 2025
3 tx · $1.1M · Jul 24, 2020
6 tx · Dec 4, 2012
9 tx · $1.9M · Jan 24, 2008

Track record of Klein Michael Stuart

Statistical track record

Free

Open-market buys: 8

Last buy: Aug 3, 2026

Win rates and median returns are available with a free account (5 insiders/month).

Transaction history of Klein Michael Stuart

Co-insiders of Klein Michael Stuart

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Src
Churchill Capital Corp XIIIListing unverified	Aug 5, 2026	Buy	350,000	10.00 USD	$3.5M	SEC
Skillsoft Corp.Listing unverified	Jul 2, 2026	AwardD (derivative)	17,500	0.00 USD	—	SEC
Skillsoft Corp.Listing unverified	Jun 26, 2026	Exercise	12,430	0.00 USD	—	SEC
Skillsoft Corp.Listing unverified	Jun 26, 2026	ExerciseD (derivative)	-12,430	0.00 USD	—	SEC
Claritev CorpListing on record	May 1, 2026	Award	8,977	0.00 USD	—	SEC
Churchill Capital Corp XIIListing unverified	Apr 29, 2026	Buy	350,000	10.00 USD	$3.5M	SEC
Infleqtion, Inc.Listing unverified	Feb 17, 2026	OtherD (derivative)	75,000	—	—	SEC
Infleqtion, Inc.Listing unverified	Feb 17, 2026	OtherD (derivative)	-10,350,000	—	—	SEC
Infleqtion, Inc.Listing unverified	Feb 17, 2026	Other	10,650,000	—	—	SEC
Churchill Capital Corp XIListing unverified	Dec 19, 2025	Buy	500,000	10.00 USD	$5M	SEC
Oklo Inc.Listing on record	Sep 24, 2025	Sell	-10,000	135.20 USD	$1.4M	SEC
Oklo Inc.Listing on record	Sep 24, 2025	Sell	-40,000	133.40 USD	$5.3M	SEC
Skillsoft Corp.Listing unverified	Jul 18, 2025	ExerciseD (derivative)	-20,306	0.00 USD	—	SEC
Skillsoft Corp.Listing unverified	Jul 18, 2025	AwardD (derivative)	12,430	0.00 USD	—	SEC
Skillsoft Corp.Listing unverified	Jul 18, 2025	Exercise	20,306	0.00 USD	—	SEC
Oklo Inc.Listing on record	Jun 25, 2025	Sell	-12,900	55.22 USD	$712.3K	SEC
Oklo Inc.Listing on record	Jun 25, 2025	Sell	-12,100	53.71 USD	$649.9K	SEC
Oklo Inc.Listing on record	Jun 25, 2025	Sell	-25,000	55.22 USD	$1.4M	SEC
Claritev CorpListing on record	May 2, 2025	Award	7,356	0.00 USD	—	SEC
Oklo Inc.Listing on record	Nov 18, 2024	Other	-13,450,000	0.00 USD	—	SEC
Skillsoft Corp.Listing unverified	Jul 23, 2024	AwardD (derivative)	20,306	0.00 USD	—	SEC
Skillsoft Corp.Listing unverified	Jul 22, 2024	ExerciseD (derivative)	-3,750	0.00 USD	—	SEC
Skillsoft Corp.Listing unverified	Jul 22, 2024	Exercise	3,750	0.00 USD	—	SEC
Oklo Inc.Listing on record	Jul 2, 2024	Award	1,450,000	10.00 USD	$14.5M	SEC
Oklo Inc.Listing on record	May 13, 2024	Exercise	12,500,000	—	—	SEC

Company	Filed	Type	Qty	Price	Value · USD	Src
Churchill Capital Corp XIIIListing unverified	Aug 5, 2026	Buy	350,000	10.00 USD	$3.5M	SEC
Skillsoft Corp.Listing unverified	Jul 2, 2026	AwardD (derivative)	17,500	0.00 USD	—	SEC
Skillsoft Corp.Listing unverified	Jun 26, 2026	Exercise	12,430	0.00 USD	—	SEC
Skillsoft Corp.Listing unverified	Jun 26, 2026	ExerciseD (derivative)	-12,430	0.00 USD	—	SEC
Claritev CorpListing on record	May 1, 2026	Award	8,977	0.00 USD	—	SEC
Churchill Capital Corp XIIListing unverified	Apr 29, 2026	Buy	350,000	10.00 USD	$3.5M	SEC
Infleqtion, Inc.Listing unverified	Feb 17, 2026	OtherD (derivative)	75,000	—	—	SEC
Infleqtion, Inc.Listing unverified	Feb 17, 2026	OtherD (derivative)	-10,350,000	—	—	SEC
Infleqtion, Inc.Listing unverified	Feb 17, 2026	Other	10,650,000	—	—	SEC
Churchill Capital Corp XIListing unverified	Dec 19, 2025	Buy	500,000	10.00 USD	$5M	SEC
Oklo Inc.Listing on record	Sep 24, 2025	Sell	-10,000	135.20 USD	$1.4M	SEC
Oklo Inc.Listing on record	Sep 24, 2025	Sell	-40,000	133.40 USD	$5.3M	SEC
Skillsoft Corp.Listing unverified	Jul 18, 2025	ExerciseD (derivative)	-20,306	0.00 USD	—	SEC
Skillsoft Corp.Listing unverified	Jul 18, 2025	AwardD (derivative)	12,430	0.00 USD	—	SEC
Skillsoft Corp.Listing unverified	Jul 18, 2025	Exercise	20,306	0.00 USD	—	SEC
Oklo Inc.Listing on record	Jun 25, 2025	Sell	-12,900	55.22 USD	$712.3K	SEC
Oklo Inc.Listing on record	Jun 25, 2025	Sell	-12,100	53.71 USD	$649.9K	SEC
Oklo Inc.Listing on record	Jun 25, 2025	Sell	-25,000	55.22 USD	$1.4M	SEC
Claritev CorpListing on record	May 2, 2025	Award	7,356	0.00 USD	—	SEC
Oklo Inc.Listing on record	Nov 18, 2024	Other	-13,450,000	0.00 USD	—	SEC
Skillsoft Corp.Listing unverified	Jul 23, 2024	AwardD (derivative)	20,306	0.00 USD	—	SEC
Skillsoft Corp.Listing unverified	Jul 22, 2024	ExerciseD (derivative)	-3,750	0.00 USD	—	SEC
Skillsoft Corp.Listing unverified	Jul 22, 2024	Exercise	3,750	0.00 USD	—	SEC
Oklo Inc.Listing on record	Jul 2, 2024	Award	1,450,000	10.00 USD	$14.5M	SEC
Oklo Inc.Listing on record	May 13, 2024	Exercise	12,500,000	—	—	SEC