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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.
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none appears on more than one
Harrison Seideman currently serves as Senior Vice President of Bluerock Acquisition Corp. (Nasdaq: BLRK), a blank-check company incorporated as a Cayman Islands exempted entity and headquartered at 919 Third Avenue in New York, NY. He joined the firm in late 2025—September per FINRA BrokerCheck records and October per SEC filings—and devotes approximately 70% of his time to his investment-related responsibilities at Bluerock. In this role, Seideman serves as a key member of the SPAC's management team alongside CEO and Chairman Ramin Kamfar, President Jordan Ruddy, Executive Vice Presidents Simon Adamiyatt and Ryan MacDonald, CFO Christopher Vohs, General Counsel Jason Emala, and Chief Strategy Officer Julia Phillips. He also acts as the primary investor contact for the company, reachable at spac@bluerock.com.
Seideman's tenure at Bluerock Acquisition Corp. has been marked by significant transactional milestones. He played a central role in the company's initial public offering, which closed on December 12, 2025, raising $172.5 million through the sale of 17,250,000 units (including the full exercise of the underwriters' over-allotment option) at $10.00 per unit, with each unit comprising one Class A ordinary share and one-third of one redeemable warrant. The offering was led by Cantor Fitzgerald & Co. as sole book-running manager, with Brookline Capital Markets and Clear Street LLC as co-managers. Concurrently, the company closed a private placement of 4,500,000 warrants generating $4.5 million in gross proceeds. Following the IPO, Bluerock Acquisition Corp. announced a definitive agreement for a $550 million merger with Yellow.ai, a global enterprise agentic AI company, marking the SPAC's path toward its initial business combination. At the time of the IPO, Seideman stated that Bluerock intended to focus its sourcing efforts on companies at an inflection point in their growth trajectory seeking a strategic capital partner.
Seideman holds over eight years of professional experience, according to SEC disclosures, and earned his education at NYU Stern School of Business. His LinkedIn profile, based in New York with over 500 connections, references prior roles at additional organizations, though specific details of those earlier positions are not publicly enumerated in the available sources. He is registered with FINRA under the name Harrison Tyler Seideman (CRD number 6669110). Seideman does not appear to hold an independent board seat at Bluerock Acquisition Corp., where the director roster includes Andrew Weksler, Ziv Conen, and Peter Cotton, nor do the available sources indicate board positions at other entities. He remains based in New York, NY, continuing his work on Bluerock's pursuit of a business combination across any industry or sector.
This record carries no SEC CIK. The name was read out of filing prose, so each role above is true of the filing it cites — but two people who share a name would share this page, and we cannot tell you that they do not. That is why the network below the career is withheld here: a recurrence needs an identity, and a name is not one.
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 1 institutional-holder rows on these vehicles, under 1 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.