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Distinct shells carrying a filed role for this person — not every shell they have ever touched.
Of those vehicles, the ones that closed a merger.
Announced but not closed, and still hunting.
No closed vehicle here has both a stored price and a filed trust value to score it against.
1 vehicle on file, newest listing first
none appears on more than one
William Brock currently serves as the Chief Executive Officer, President, and Director of ClearThink 1 Acquisition Corp. (NASDAQ: CTAAU), a special purpose acquisition company targeting businesses in the financial services sector across the United States and other developed countries. Under his leadership, ClearThink 1 Acquisition priced its $125 million IPO on February 23, 2026, offering 12.5 million units at $10 per share, with trading commencing on February 24, 2026. D. Boral Capital LLC acted as the sole book-running manager for the offering. The SPAC's sponsor is ClearThink 1 Sponsor LLC, which is owned by ClearThink Capital, and Brock serves as a manager of the sponsor alongside Ari Brown, a Managing Director at ClearThink Capital. Brock is joined on the management team by Chief Financial Officer and Director Thomas Zipser, as well as board members Darwin Hunt, Yosef Milgrom, and Julien Machot.
Prior to leading ClearThink 1 Acquisition, Brock established himself as a financial services executive, founding and serving as the CEO of Iron Rock LLC (also referred to as Iron Rock Partners LLC), a financial services firm focused on merchant banking, commodities, and financial instruments. His earlier career includes a tenure as President at iPro One. Brock attended Harvard Business School and is based in New York, New York, though the ClearThink 1 Acquisition Corp. headquarters is listed in Boca Raton, Florida. Through his roles at Iron Rock and ClearThink Capital, Brock has built a track record centered on financial services and merchant banking, positioning his SPAC to seek targets with potential for long-term organic growth, consolidation opportunities, and attractive competitive dynamics.
This record is keyed to SEC CIK 0002114325 — the identifier this person files under in their own name. Every vehicle above is a filing made under that CIK, so “the same person on two shells” is a fact about an SEC identifier rather than about a name that happens to match.
Roles are the strings the filings used, in the order they were filed. Nothing on this page ranks them, infers seniority, or offers a reason why any two of these names recur — a recurrence is a count, and the filings that produced it are linked beside every row. We also hold 9 institutional-holder rows on these vehicles, under 6 distinct name strings, and none of them is counted across vehicles: that table has no CIK column, and matching holders by name would merge firms that are not the same firm.