Sec Form 4 Filing - TANG KEVIN C @ Rain Oncology Inc. - 2024-01-26

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person TANG KEVIN C 2. Issuer Name and Ticker or Trading Symbol Rain Oncology Inc. [ RAIN] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 4747 EXECUTIVE DRIVE, SUITE 210 3. Date of Earliest Transaction (MM/DD/YY) 01/26/2024 (Street) SAN DIEGO, CA92121 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 01/26/2024 U( 1 )( 2 ) 3,850,513 D 0 I By LP ( 4 )

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other TANG KEVIN C 4747 EXECUTIVE DRIVE SUITE 210 SAN DIEGO, CA92121 X TANG CAPITAL MANAGEMENT LLC 4747 EXECUTIVE DRIVE SUITE 210 SAN DIEGO, CA92121 X TANG CAPITAL PARTNERS LP 4747 EXECUTIVE DRIVE SUITE 210 SAN DIEGO, CA92121 X Signatures Kevin Tang 02/02/2024 Signature of Reporting Person Date Kevin Tang, Manager 02/02/2024 Signature of Reporting Person Date Kevin Tang, Manager of Tang Capital Management, LLC, General Partner 02/02/2024 Signature of Reporting Person Date

Explanation of Responses:

( 1 )This Form 4 reports securities disposed of pursuant to the terms of the Agreement and Plan of Merger, dated as of December 13, 2023, by and among the Issuer, Pathos AI, Inc. ("Parent"), and WK Merger Sub, Inc., a Delaware corporation and wholly-owned subsidiary of Parent, to which Parent completed a tender offer for shares of common stock of the Issuer, $0.001 par value per share (each, a "Share"), and thereafter merged with and into the Issuer effective as of January 26, 2024 (the "Effective Time"). At the Effective Time, each issued and outstanding Share was converted into the right to receive $1.16 per Share plus one contingent value right for potential cash payments of up to approximately $0.17 per Share. From and after the Effective Time, all Shares were no longer outstanding and were automatically cancelled. ( 2 )The Reporting Person has delivered to the Issuer the full amount of the disgorgeable profit arising the sale reported herein, in the amount of $18,729.24. ( 3 )The Reporting Persons received the following in exchange for each Share tendered in connection with the Merger: $1.16 in cash per Share and one contingent value right for potential cash payments of up to approximately $0.17 per Share. ( 4 )The shares are beneficially owned by Tang Capital Partners, LP ("TCP"). Kevin Tang is the sole manager of Tang Capital Management, LLC ("TCM"), which is the general partner of TCP. Mr. Tang has a pecuniary interest in the shares beneficially held by TCP.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

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