Key Highlights

● Pinnacle Acquisition Corporation's sponsor forfeited and cancelled 750,000 Class B founder shares on September 21, 2026.

● The forfeiture followed underwriters letting their over-allotment option lapse unexercised after the IPO closed.

● Pinnacle's Class A shares and rights began trading separately from units on the NYSE effective September 25, 2026.

● No business-combination target or timeline has been named; Pinnacle remains in its post-IPO search phase.

Pinnacle Acquisition Corporation (NYSE:PNAQ), a Cayman Islands blank-check company, disclosed in an 8-K filed September 25, 2026 that its sponsor, PAC Sponsor, LLC, forfeited and cancelled 750,000 Class B ordinary shares on September 21, 2026 after underwriters let their over-allotment option expire unexercised. The same filing announced that Pinnacle's Class A ordinary shares and rights began trading separately from its units on the New York Stock Exchange effective September 25, 2026.

Why The Sponsor Gave Up Shares

According to the filing, the forfeiture occurred "following the expiration of the underwriters' over-allotment option without any exercise." SPAC sponsors typically hold a founder-share stake sized to represent 20% of the company's total outstanding ordinary shares once the IPO, including any exercised over-allotment, is complete.

Because underwriters did not exercise their option to buy additional units, the number of public shares outstanding ended up lower than the maximum contemplated at IPO, so PAC Sponsor forfeited 750,000 Class B shares to keep its stake at the intended 20% level. Those shares were cancelled rather than transferred.

Securities Now Trading Separately

Effective September 25, 2026, holders of Pinnacle's units can elect to have their Class A ordinary shares and rights trade independently on the NYSE. The Class A shares trade under the ticker PNAQ and the rights under PNAQ.RT, while units that have not been separated continue trading as PNAQ.U. The filing notes that separating the components requires coordination with Continental Stock Transfer & Trust Company, the transfer agent, rather than happening automatically for every unit holder.

Who Runs Pinnacle

An exhibit attached to the filing, a press release announcing the separate trading, identifies Pinnacle's leadership: Steve Hudson as co-founder, Chief Executive Officer and Chairman; Andrew Rechtschaffen as co-founder and director; and Jack Schneider as Chief Financial Officer. Independent board members named include Paul Stoyan, Karen Martin and Harry Brandler.

The release describes Pinnacle's focus areas as commercial finance, consumer finance, technology-enabled platforms and specialty finance businesses within the broader financial-services ecosystem. Hudson is quoted in the release saying the team's experience in "building and scaling public-market platforms, executing strategic M&A and working across commercial and consumer finance" positions Pinnacle to identify and grow exceptional companies.

What A SPAC Founder-Share Forfeiture Signals

A founder-share forfeiture tied to an unexercised over-allotment option is a mechanical, formulaic adjustment rather than a sign of trouble with the SPAC itself, it simply keeps the sponsor's percentage ownership consistent with what was disclosed at IPO. The filing does not identify a business-combination target or timeline for Pinnacle, since the company remains in its post-IPO search phase for an acquisition in its stated focus areas. Underwriters routinely decline to exercise an over-allotment option in full when investor Demand at the IPO does not support selling the maximum number of units, which then triggers this kind of proportional founder-share adjustment under the terms sponsors typically agree to at the time of listing.

Separate Trading As A Routine IPO Milestone

The start of separate trading for Class A shares and rights is itself a standard, scheduled event for SPACs, typically occurring a set number of days after the IPO closes once the underwriters confirm the deal has settled and certain conditions, including filing requirements, are satisfied. It allows investors who prefer to hold or trade the Equity and rights components independently, rather than as a bundled unit, to do so. The filing does not disclose the original IPO closing date or size, only that separate trading commenced September 25, 2026.

Where Pinnacle's Search Stands Now

Separate trading of Class A shares (PNAQ) and rights (PNAQ.RT) began September 25, 2026; unit holders must act through their Brokers and Continental Stock Transfer to separate their holdings. No specific business-combination target has been named in this filing. Pinnacle's trust-account and business-combination deadline terms are not detailed in this particular 8-K. Investors should watch for a future announcement naming a target company in commercial finance, consumer finance or specialty finance.