Financial Performance - For the three months ended March 31, 2023, the company reported a net income of $2,070,528, primarily from interest income on marketable securities held in the Trust Account [118]. - The company generated interest income of $3,284,542 from marketable securities held in the Trust Account for the three months ended March 31, 2023 [118]. - Cash used in operating activities for the three months ended March 31, 2023 was $97,222, with net income affected by interest earned on marketable securities [120]. Marketable Securities - As of March 31, 2023, the company had marketable securities in the Trust Account totaling $313,074,997, consisting of U.S. Treasury Bills with a maturity of 185 days or less [120]. - The company plans to use substantially all funds in the Trust Account to complete its Business Combination and for working capital of the target business [120]. Initial Public Offering (IPO) - The company raised gross proceeds of $300,000,000 from its Initial Public Offering, with an additional $13,850,000 from the sale of Private Placement Warrants [119]. - The company incurred total transaction costs of $17,204,107 related to the Initial Public Offering, including $5,760,000 in underwriting discounts [119]. Business Combination - The company has until October 19, 2023, to consummate a Business Combination, after which a mandatory liquidation will occur if not completed [122]. - The company has committed $1,750,000 from its Sponsor to fund expenses related to identifying and evaluating target businesses [120]. Accounting Standards - ASU 2020-06, effective after December 15, 2023, simplifies accounting for convertible instruments and diluted earnings per share calculation [132]. - ASU 2016-13, adopted on January 1, 2023, requires financial assets to be presented at the net amount expected to be collected, with no material impact on financial statements [133]. - Management does not anticipate any other recently issued accounting standards to materially affect condensed financial statements [134]. Debt and Liabilities - The company does not have any long-term debt or off-balance sheet arrangements as of March 31, 2023 [123].

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-41224 Atlantic Coastal Acquisition Corp. II (Exact name of registrant as specified in its charter) Delaware 85-1013956 (State or other jurisdictio ...

Table of Contents Securities registered pursuant to Section 12(b) of the Act: Title of each classTrading Symbol(s)Name of each exchange on which registered Units, each consisting of one share of Series A common stock, $0.0001 par value, and one-half of one redeemable warrant ACABU The Nasdaq Stock Market LLC Shares of Series A common stock included as part of the units ACAB The Nasdaq Stock Market LLC Warrants included as part of the units, each whole warrant exercisable for one share of Series A common sto ...

Table of Contents Title of each classTrading Symbol(s)Name of each exchange on which registered Units, each consisting of one share of Series A common stock, $0.0001 par value, and one-half of one redeemable warrant ACABU The Nasdaq Stock Market LLC Shares of Series A common stock included as part of the units ACAB The Nasdaq Stock Market LLC Warrants included as part of the units, each whole warrant exercisable for one share of Series A common stock at an exercise price of $11.50 ACABW The Nasdaq Stock Mar ...

Table of Contents Securities registered pursuant to Section 12(b) of the Act: Title of each classTrading Symbol(s)Name of each exchange on which registered Units, each consisting of one share of Series A common stock, $0.0001 par value, and one-half of one redeemable warrant ACABU The Nasdaq Stock Market LLC Shares of Series A common stock included as part of the units ACAB The Nasdaq Stock Market LLC Warrants included as part of the units, each whole warrant exercisable for one share of Series A common sto ...

Table of Contents Title of Each ClassTrading Symbol(s)Name of Each Exchange on Which Registered Units, each consisting of one share of Series A common stock, $0.0001 par value, and one-half of one redeemable warrant ACABU The Nasdaq Stock Market LLC Shares of Series A common stock included as part of the units ACAB The Nasdaq Stock Market LLC Warrants included as part of the units, each whole warrant exercisable for one share of Series A common stock at an exercise price of $11.50 ACABW The Nasdaq Stock Mar ...