VIKING GLOBAL INVESTORS LP - 30 May 2024 Form 4 Insider Report for Inhibrx, Inc.

Footnote F1

Under the Agreement and Plan of Merger, dated January 22, 2024 (the "Merger Agreement"), by and among Inhibrx, Inc. (the "Issuer"), Aventis Inc., a Pennsylvania corporation ("Parent") and wholly owned subsidiary of Sanofi, and Art Acquisition Sub, Inc., a Delaware corporation ("Merger Sub") and wholly owned subsidiary of Parent, following satisfaction or waiver of the closing conditions set forth in the Merger Agreement, on May 30, 2024, Merger Sub merged with and into the Issuer with the Issuer surviving as the surviving company (the "Merger").

Footnote F2

In the Merger, each of these shares of Common Stock was automatically cancelled, extinguished and converted into the right to receive (i) an amount in cash equal to $30.00, without interest thereon (the "Closing Amount"), plus (ii) one (1) contractual contingent value right ("CVR") representing the right to receive a contingent payment of $5.00, without interest thereon, in cash (the "Milestone Payment"), upon the achievement of certain regulatory milestones ("Milestone") set forth in the Contingent Value Rights Agreement between Parent and Continental Stock Transfer & Trust Company ((i) and (ii) collectively, the "Merger Consideration").

Footnote F3

Andreas Halvorsen, David C. Ott and Rose S. Shabet are Executive Committee members of certain management entities, including Viking Global Partners LLC, the general partner of Viking Global Investors LP ("VGI"), and Viking Global Opportunities Parent GP LLC ("Opportunities Parent"), the sole member of Viking Global Opportunities GP LLC ("Opportunities GP"), the sole member of Viking Global Opportunities Portfolio GP LLC ("Opportunities Portfolio GP"), the general partner of Viking Global Opportunities Illiquid Investments Sub-Master LP ("Opportunities Fund"). Opportunities Parent is also the sole member of Viking Global Opportunities Drawdown GP LLC ("VGOD GP"), the sole member of Viking Global Opportunities Drawdown Portfolio GP LLC ("VGOD Portfolio GP"), the general partner of Viking Global Opportunities Drawdown (Aggregator) LP ("VGOD").

Footnote F4

VGI provides managerial services to various investment funds and vehicles, including Opportunities Fund, VGOD, and KAVRA 104 LLC ("KAVRA 104"). VGI, Opportunities Parent, Opportunities GP, Opportunities Portfolio GP, Opportunities Fund, Mr. Halvorsen, Mr. Ott and Ms. Shabet are, collectively, the "Reporting Persons." Each of VGI, Mr. Halvorsen, Mr. Ott and Ms. Shabet may be deemed to beneficially own all of the securities reported on this form.

Footnote F5

Reported amount has been adjusted to reflect the transfer of 3,878,559 shares of Common Stock held directly by DRAGSA 50 LLC to Opportunities Fund, which transfer was exempt from Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), pursuant to Rule 16a-13 under the Exchange Act.

Footnote F6

These securities were held directly by Opportunities Fund. Because of the relationship between Opportunities Portfolio GP, Opportunities GP, Opportunities Parent and Opportunities Fund, each of Opportunities Portfolio GP, Opportunities GP and Opportunities Parent may be deemed to beneficially own the securities held directly by Opportunities Fund.

Footnote F7

These shares of Common Stock were held directly by KAVRA 104. The membership interests of KAVRA 104 are held by Viking Global Opportunities LP and Viking Global Opportunities Intermediate LP. Opportunities GP is the general partner of Viking Global Opportunities LP and Viking Global Opportunities Intermediate LP. Because of the relationship between Opportunities GP, Opportunities Parent and KAVRA 104, each of Opportunities GP and Opportunities Parent may be deemed to beneficially own the shares of Common Stock held directly by KAVRA 104.

Footnote F8

These shares of Common Stock were held directly by VGOD. Because of the relationship between Opportunities Parent and VGOD, Opportunities Parent may be deemed to beneficially own the shares of Common Stock held directly by VGOD.

Footnote F9

The Reporting Persons disclaim beneficial ownership of these securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Exchange Act, or for any other purpose.

Footnote F10

These warrants were exercisable immediately prior to the Merger, subject to a beneficial ownership limitation (the "Beneficial Ownership Limitation") that prevented the holder from exercising the warrants to the extent that, after giving effect to the issuance of the shares of Common Stock upon exercise of warrants held by the holder, the holder would beneficially own in excess of 9.99% of the shares of Common Stock outstanding.

Footnote F11

These warrants had no expiration date.

Footnote F12

In the Merger, these warrants were automatically cancelled and converted into the right to receive the Merger Consideration to which the holder of these warrants would be entitled as a result of the Merger if it held the number of shares of Common Stock for which such warrants were exercisable immediately prior to the Merger, assuming full exercise of such warrants on a cashless basis without regard to the Beneficial Ownership Limitation.