UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-40562 MOUNTAIN CREST ACQUISITION CORP. IV (Exact name of registrant as specified in its charter) (State or other jurisdiction of i ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-40562 MOUNTAIN CREST ACQUISITION CORP. IV (Exact name of registrant as specified in its charter) (State or other jurisdiction of incorp ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-40562 MOUNTAIN CREST ACQUISITION CORP. IV (Former name, former address and former fiscal year, if changed since last report) Securitie ...

Financial Position - As of December 31, 2022, the trust account held a total of $57,501,914, consisting of $57,500,000 from the IPO and Private Placement, and $1,914 in interest income[104]. - As of December 31, 2022, the Company reported a net loss of $111,447, with operating and formation costs totaling $749,746, offset by interest income of $774,918 from marketable securities held in the Trust Account[125]. - As of December 31, 2022, the Company had investments in the Trust Account amounting to $34,084,917, including $776,832 of interest income[130]. - The Company has no long-term debt obligations or off-balance sheet financing arrangements as of December 31, 2022[139]. - The net proceeds from the IPO have been invested in U.S. government treasury obligations with a maturity of 185 days or less[151]. - The company believes there will be no associated material exposure to interest rate risk due to the short-term nature of these investments[151]. Business Combination - The company entered into a merger agreement with CH AUTO Inc. and its subsidiaries, intending to complete the merger by November 15, 2022[109]. - The company extended the period to complete its initial business combination from January 2, 2023, to April 2, 2023, by depositing $581,000 into the trust account[115]. - The amended merger agreement requires the company to acquire at least 71.2184% of CH AUTO to consummate the closing[119]. - The company received a loan of $350,000 from CH Auto Technology Corporation Ltd. to fund an extension payment for its business combination deadline[120]. - The company plans to issue CH AUTO Merger Consideration to stockholders based on an Equityholder Allocation Schedule[111]. - The company will change its name to CH Autotech USA, Inc. following the merger[109]. - The company has the option to further extend the business combination period beyond July 2, 2023, pending stockholder approval[115]. - The company plans to conduct a reverse stock split of its shares as part of the merger process[110]. - The Company intends to use substantially all funds in the Trust Account to complete its Business Combination, with remaining proceeds allocated for working capital and growth strategies[131]. - The Company has until July 2, 2023, to consummate a Business Combination, after which liquidation and dissolution may occur if unsuccessful[138]. IPO Details - The Company completed its Initial Public Offering on July 2, 2021, raising gross proceeds of $50,000,000 from the sale of 5,000,000 units at $10.00 per unit[126]. - Following the full exercise of the underwriters' over-allotment option, a total of $57,500,000 was placed in the Trust Account[128]. - Offering costs related to the Initial Public Offering totaled $4,773,824, which included $1,150,000 in underwriting fees and $2,012,500 in deferred underwriting fees[147]. - The underwriters are entitled to a deferred fee of $0.35 per unit, totaling $2,012,500, payable only if the Company completes a Business Combination[141]. Accounting and Risk Assessment - ASU 2020-06, effective December 15, 2023, simplifies accounting for certain financial instruments and introduces additional disclosures for convertible debt[149]. - The company is currently assessing the impact of ASU 2020-06 on its financial position, results of operations, or cash flows[149]. - As of December 31, 2022, the company was not subject to any market or interest rate risk[151]. - The Company issued a Convertible Promissory Note to the Sponsor for up to $100,000, which is non-interest bearing and payable upon completion of a Business Combination or liquidation[134].

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2022 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to (646) 493-6558 (Registrant's telephone number, including area code) Commission File No. 001-40562 MOUNTAIN CREST ACQUISITION CORP. IV (Exact name of registrant ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 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 No. 001-40562 MOUNTAIN CREST ACQUISITION CORP. IV (Exact name of registrant as specified in its charter) Delaware 86-2435859 (State or other j ...

Table of Contents 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, 2021 or ☐ TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-40418 MOUNTAIN CREST ACQUISITION CORP. IV (Exact name of registrant as specified in its charter) | Delaware | 86-2435859 | | --- | ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2021 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-40562 MOUNTAIN CREST ACQUISITION CORP. IV (Exact name of registrant as specified in its charter) Delaware 86-243 ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2021 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-40562 MOUNTAIN CREST ACQUISITION CORP. IV (Exact name of registrant as specified in its charter) (State or other juri ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2021 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-40562 MOUNTAIN CREST ACQUISITION CORP. IV (Exact name of registrant as specified in its charter) | | | (State or oth ...