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SCHEDULE 13D Filed 2026-10-13 Event 2026-10-07 SEC 0001094891-26-000306 →

Pine Tree Sponsor Group, LLC → Pine Tree Acquisition Corp. PAXGU

Stake: 32.70% Shares: 5,063,571 CUSIP: G7111J102 Class: Class A ordinary shares, par value $0.0001 per share

Item 4 — Purpose of Transaction

On July 1, 2024, the Reporting Person paid $25,000 to acquire 2,424,324 Class B ordinary shares, par value $0.0001 per share (the "Founder Shares"), of the Issuer. Following share capitalizations in October 2025 and June 2026, the Reporting Person held 4,928,571 Founder Shares. Up to 642,857 Founder Shares are subject to surrender for no consideration depending on the extent to which the underwriters' over-allotment option is exercised. The Founder Shares are convertible into the Issuer's Class A ordinary shares concurrently with or immediately following the consummation of an initial business combination, or earlier at the option of the holder thereof on a one-for-one basis, subject to adjustment. The Class B ordinary shares have no expiration date. On October 7, 2026, in a private placement consummated simultaneously with the closing of the Issuer's initial public offering, the Reporting Person purchased 135,000 units at $10.00 per unit, for an aggregate purchase price of $1,350,000 (the "Private Placement Units"). Each Private Placement Unit consists of one Class A ordinary share and one right entitling the holder to receive three-fourths of one Class A ordinary share upon consummation of the Issuer's initial business combination, subject to adjustment. The Reporting Person acquired these securities as a sponsor of the Issuer and in support of the Issuer's business plan to consummate an initial business combination. Subject to applicable law and the agreements described in Item 6, the Reporting Person may acquire additional securities (including upon conversion of the rights included in the Private Placement Units) or dispose of securities of the Issuer from time to time through market transactions, private transactions or otherwise. Except as described in this Schedule 13D, the Reporting Person presently has no plans or proposals that would result in any of the actions described in paragraphs (a) through (j) of Item 4 of Schedule 13D. The Reporting Person reserves the right to reconsider its position and to develop such plans or proposals in the future.

Cross-References

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Issuer Cluster
3 13D/G filings on this issuer
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Short Interest
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Other 13D/G Filings on Pine Tree Acquisition Corp.

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2026-10-13 SCHEDULE 13G CVI Investments, Inc. — — view →
2026-10-09 SCHEDULE 13G Feis Equities LLC — — view →

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