Institutional HoldersBeta

Who holds a company, from every 13F filed for the quarter, one row per filer exactly as filed, against the latest share count the company reported.

Clearthink 1 Acquisition Corp.

CIK 0002094073CTAACTAARCTAAU· quarter ending 2026-06-30

Shares outstanding

17,001,667

as of 2026-08-14 · 10-Q cover page, filed 2026-08-17

Held by 13F filers

10,733,197

83.7% of Common Class A

Holders

+31 vs 2026-03-31 · 31 new, 0 exited

Value

$106.3M

shares +— vs prior quarter

Share classes (cover page of the 10-Q filed 2026-08-17, as of 2026-08-14)

Class	Listed	Shares outstanding	Held by 13F filers	% of class	Holders	CUSIP
Common Class A	CTAA · NASDAQ	12,830,000	10,733,197	83.7%	31	G2294A101
Common Class B	not listed	4,171,667	—	—

Each class is compared with its own share count; classes are not added together. A class that is not exchange-listed cannot be held by 13F filers.

Securities (CUSIPs held in 13F this quarter)

tick to combine

CUSIP	Class (as filers write it)	Holders	Shares held	Class shares	% of class	Value	Options	Mapped via
G2294A101	ORD SHS CL A	31	10,733,197	12,830,000	83.7%	$106.3M	—	13DG	holders →
G2294A127	UNIT 01/26/2031not common	9	1,874,959	—	—	$18.8M	—	13DG	holders →
G2294A119	RIGHT 01/26/2031not common	24	8,611,092	—	—	$2.0M	—	prefix	holders →

Totals combine the ticked CUSIPs and update as you tick: common-stock classes by default; preferreds, notes, warrants and depositary shares are listed but not counted. "holders →" shows a single CUSIP on its own. Bonds are held as a principal amount, not shares. Options positions are never counted as holdings.

Top holders (31 of 31 · G2294A101)

change vs 2026-03-31

#	Filer	Shares	% of class	Value	Change
1	GLAZER CAPITAL, LLC	1,104,600	8.61%	$10.9M	NEW
2	ARISTEIA CAPITAL, L.L.C.	1,000,000	7.79%	$9.9M	NEW
3	HIGHBRIDGE CAPITAL MANAGEMENT LLC	897,253	6.99%	$8.9M	NEW
4	AQR Arbitrage LLC	776,743	6.05%	$7.7M	NEW
5	Radcliffe Capital Management, L.P.	610,000	4.75%	$6.0M	NEW
6	Magnetar Financial LLC	605,000	4.72%	$6.0M	NEW
7	RIVERNORTH CAPITAL MANAGEMENT, LLC	500,000	3.90%	$5.0M	NEW
8	Polar Asset Management Partners Inc.	500,000	3.90%	$5.0M	NEW
9	BERKLEY W R CORP	497,000	3.87%	$4.9M	NEW
10	MANGROVE PARTNERS IM, LLC	450,000	3.51%	$4.5M	NEW
11	BNP PARIBAS FINANCIAL MARKETS	428,257	3.34%	$4.2M	NEW
12	MIZUHO SECURITIES USA LLC	411,000	3.20%	$4.0M	NEW
13	WOLVERINE ASSET MANAGEMENT LLC	310,300	2.42%	$3.1M	NEW
14	COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS	300,000	2.34%	$3.0M	NEW
15	WHITEBOX ADVISORS LLC	300,000	2.34%	$3.0M	NEW
16	Context Capital Management, LLC	250,000	1.95%	$2.5M	NEW
17	Linden Advisors LP	250,000	1.95%	$2.5M	NEW
18	TWO SIGMA INVESTMENTS, LP	226,562	1.77%	$2.2M	NEW
19	Hudson Bay Capital Management LP	200,000	1.56%	$2.0M	NEW
20	Kepos Capital LP	200,000	1.56%	$2.0M	NEW
21	Shaolin Capital Management LLC	170,888	1.33%	$1.7M	NEW
22	Centiva Capital, LP	150,000	1.17%	$1.5M	NEW
23	HEIGHTS CAPITAL MANAGEMENT, INC	125,000	0.97%	$1.2M	NEW
24	StoneX Group Inc.	111,237	0.87%	$1.1M	NEW
25	DLD Asset Management, LP	100,000	0.78%	$991K	NEW
26	Limestone Investment Advisors LP	75,627	0.59%	$749K	NEW
27	ROYAL BANK OF CANADA	62,437	0.49%	$619K	NEW
28	Warberg Asset Management LLC	47,995	0.37%	$476K	NEW
29	Clear Street Group Inc.	43,286	0.34%	$429K	NEW
30	ABC ARBITRAGE SA	30,000	0.23%	$297K	NEW
31	MORGAN STANLEY	12	0.00%	$119	NEW

Large holders from 13D/13G (latest per reporting person, last 2 years)

Filed when a holder crosses 5% or changes materially, so often more current than the quarter-end 13F. Percentages are the filer's own, against the share count they used.

Reporting person	Form	Filed	Event	Shares	% of class
Highbridge Capital Management, LLC	SCHEDULE 13G/A	2026-08-14	2026-06-30	897,253	7.2%
Aristeia Capital, L.L.C.	SCHEDULE 13G/A	2026-08-14	2026-06-30	1,000,000	7.99%
Frederick V. Fortmiller, Jr.	SCHEDULE 13G/A	2026-08-14	2026-06-30	0	0%
Harraden Circle Investments, LLC	SCHEDULE 13G/A	2026-08-14	2026-06-30	0	0%
Nathaniel August	SCHEDULE 13G	2026-07-20	2026-06-30	1,055,000	8.43%
Mangrove Partners IM, LLC	SCHEDULE 13G	2026-07-20	2026-06-30	1,055,000	8.43%
Glazer Capital, LLC	SCHEDULE 13G	2026-05-14	2026-03-31	1,075,418	8.59%
Paul J. Glazer	SCHEDULE 13G	2026-05-14	2026-03-31	1,075,418	8.59%
AQR Capital Management Holdings, LLC	SCHEDULE 13G	2026-05-13	2026-03-31	776,743	6.21%
AQR Capital Management, LLC	SCHEDULE 13G	2026-05-13	2026-03-31	776,743	6.21%
AQR Arbitrage, LLC	SCHEDULE 13G	2026-05-13	2026-03-31	776,743	6.21%
Harraden Circle Investors GP, LLC	SCHEDULE 13G	2026-03-03	2026-02-24	659,832	5.15%
Harraden Circle Strategic Investments, LP	SCHEDULE 13G	2026-03-03	2026-02-24	109,073	0.85%
Harraden Circle Special Opportunities, LP	SCHEDULE 13G	2026-03-03	2026-02-24	141,522	1.1%
Harraden Circle Investors, LP	SCHEDULE 13G	2026-03-03	2026-02-24	409,237	3.19%
Harraden Circle Investors GP, LP	SCHEDULE 13G	2026-03-03	2026-02-24	659,832	5.15%
Harraden Circle Concentrated, LP	SCHEDULE 13G	2026-03-03	2026-02-24	0	0%

Source: SEC Form 13F-HR information tables for the quarter ending 2026-06-30 (filed within 45 days of quarter end; amendments applied; values normalised to dollars), the share count from the company's latest 10-K/10-Q XBRL cover page, and Schedule 13D/13G filings. Each row is a legal 13F filer as filed — related entities (e.g. Vanguard's advisers) are not merged. Retail brokerage accounts are not reported on 13F, so the remainder is mostly retail and insiders.