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Seaport Therapeutics, Inc.

For the period ended Jun 30, 2026. Filed Aug 3, 2026.

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A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Jun 30, 2026 · Filed Aug 3, 2026

SPTX$21.97+0.2%Stored close · as of Nov 10, 2026

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Unregistered Sales of Equity Securities and Use of Proceeds

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds.

(a) Recent Sales of Unregistered Equity Securities

None.

(b) Use of Proceeds from our Initial Public Offering

On April 30, 2026, the SEC declared effective our registration statement on Form S-1 (File No. 333-294976), as amended, or the

Registration Statement, filed in connection with our IPO. Pursuant to the Registration Statement, we registered the offer and sale of

14,160,000 shares of our common stock with a maximum aggregate offering price of approximately $237.0 million. Goldman Sachs &

Co. LLC, J.P. Morgan, Leerink Partners, Citigroup, and Stifel acted as representatives of the underwriters for the IPO. None of the

expenses associated with the IPO were paid to directors, officers, persons owning 10% or more of any class of equity securities, or to

our affiliates.

There has been no material change in the expected use of the net proceeds from our IPO as described in our final prospectus filed

with the SEC pursuant to Rule 424(b) of the Securities Act on May 1, 2026.

(c) Issuer Repurchases of Securities

None.

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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.