0001104659-22-126643.txt : 20221213 0001104659-22-126643.hdr.sgml : 20221213 20221213163527 ACCESSION NUMBER: 0001104659-22-126643 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 3 CONFORMED PERIOD OF REPORT: 20221209 FILED AS OF DATE: 20221213 DATE AS OF CHANGE: 20221213 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Dean Thompson CENTRAL INDEX KEY: 0001069096 STATE OF INCORPORATION: DE FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-40720 FILM NUMBER: 221460128 MAIL ADDRESS: STREET 1: 65 EAST 55TH STREET, 18TH FLOOR STREET 2: C/O AVISTA CAPITAL PARTNERS CITY: NEW YORK STATE: NY ZIP: 10022 FORMER NAME: FORMER CONFORMED NAME: DEAN THOMPSON DATE OF NAME CHANGE: 19980827 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Burgstahler David F CENTRAL INDEX KEY: 0001374179 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-40720 FILM NUMBER: 221460129 MAIL ADDRESS: STREET 1: C/O WARNER CHILCOTT HOLDINGS CO., LTD. STREET 2: 100 ENTERPRISE DRIVE CITY: ROCKAWAY STATE: NJ ZIP: 07866 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Tamaroff Joshua Alexander CENTRAL INDEX KEY: 0001705548 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-40720 FILM NUMBER: 221460126 MAIL ADDRESS: STREET 1: C/O AVISTA CAPITAL PARTNERS STREET 2: 65 EAST 55TH STREET, 18TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10022 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Avista Capital Partners V, L.P. CENTRAL INDEX KEY: 0001774142 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-40720 FILM NUMBER: 221460125 BUSINESS ADDRESS: STREET 1: 65 E. 55TH STREET, 18TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10022 BUSINESS PHONE: 212-593-6900 MAIL ADDRESS: STREET 1: 65 E. 55TH STREET, 18TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10022 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Avista Capital Managing Member V, LLC CENTRAL INDEX KEY: 0001957307 STATE OF INCORPORATION: DE FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-40720 FILM NUMBER: 221460122 BUSINESS ADDRESS: STREET 1: 65 E. 55TH STREET, 18TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10022 BUSINESS PHONE: 212-593-6900 MAIL ADDRESS: STREET 1: 65 E. 55TH STREET, 18TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10022 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Avista Acquisition GP LLC II CENTRAL INDEX KEY: 0001846167 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-40720 FILM NUMBER: 221460130 BUSINESS ADDRESS: STREET 1: C/O AVISTA CAPITAL HOLDINGS, LP STREET 2: 65 EAST 55TH STREET, 18TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10022 BUSINESS PHONE: 212-593-6900 MAIL ADDRESS: STREET 1: C/O AVISTA CAPITAL HOLDINGS, LP STREET 2: 65 EAST 55TH STREET, 18TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10022 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Avista Capital Partners (Offshore) V, L.P. CENTRAL INDEX KEY: 0001774143 STATE OF INCORPORATION: D0 FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-40720 FILM NUMBER: 221460124 BUSINESS ADDRESS: STREET 1: 65 E. 55TH STREET, 18TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10022 BUSINESS PHONE: 212-593-6900 MAIL ADDRESS: STREET 1: 65 E. 55TH STREET, 18TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10022 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Avista Acquisition LP II CENTRAL INDEX KEY: 0001846254 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-40720 FILM NUMBER: 221460127 BUSINESS ADDRESS: STREET 1: C/O AVISTA CAPITAL HOLDINGS, LP STREET 2: 65 EAST 55TH STREET, 18TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10022 BUSINESS PHONE: 212-593-6900 MAIL ADDRESS: STREET 1: C/O AVISTA CAPITAL HOLDINGS, LP STREET 2: 65 EAST 55TH STREET, 18TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10022 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Avista Capital Partners V GP, L.P. CENTRAL INDEX KEY: 0001957305 STATE OF INCORPORATION: DE FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-40720 FILM NUMBER: 221460123 BUSINESS ADDRESS: STREET 1: 65 E. 55TH STREET, 18TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10022 BUSINESS PHONE: 212-593-6900 MAIL ADDRESS: STREET 1: 65 E. 55TH STREET, 18TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10022 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: OmniAb, Inc. CENTRAL INDEX KEY: 0001846253 STANDARD INDUSTRIAL CLASSIFICATION: SERVICES-COMMERCIAL PHYSICAL & BIOLOGICAL RESEARCH [8731] IRS NUMBER: 000000000 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 5980 HORTON STREET STREET 2: SUITE 600 CITY: EMERYVILLE STATE: CA ZIP: 94608 BUSINESS PHONE: 510-250-7800 MAIL ADDRESS: STREET 1: 5980 HORTON STREET STREET 2: SUITE 600 CITY: EMERYVILLE STATE: CA ZIP: 94608 FORMER COMPANY: FORMER CONFORMED NAME: Avista Public Acquisition Corp. II DATE OF NAME CHANGE: 20210212 4 1 tm2232531-1_4seq1.xml OWNERSHIP DOCUMENT X0306 4 2022-12-09 0 0001846253 OmniAb, Inc. OABI 0001846167 Avista Acquisition GP LLC II 65 EAST 55TH STREET 18TH FLOOR NEW YORK NY 10022 1 0 1 0 0001374179 Burgstahler David F 65 EAST 55TH STREET 18TH FLOOR NEW YORK NY 10022 1 0 1 0 0001069096 Dean Thompson 65 EAST 55TH STREET 18TH FLOOR NEW YORK NY 10022 1 0 1 0 0001846254 Avista Acquisition LP II 65 EAST 55TH STREET 18TH FLOOR NEW YORK NY 10022 1 0 1 0 0001705548 Tamaroff Joshua Alexander 65 EAST 55TH STREET 18TH FLOOR NEW YORK NY 10022 1 0 1 0 0001774142 Avista Capital Partners V, L.P. 65 EAST 55TH STREET 18TH FLOOR NEW YORK NY 10022 1 0 1 0 0001774143 Avista Capital Partners (Offshore) V, L.P. 65 EAST 55TH STREET 18TH FLOOR NEW YORK NY 10022 1 0 1 0 0001957305 Avista Capital Partners V GP, L.P. 65 EAST 55TH STREET 18TH FLOOR NEW YORK NY 10022 1 0 1 0 0001957307 Avista Capital Managing Member V, LLC 65 EAST 55TH STREET 18TH FLOOR NEW YORK NY 10022 1 0 1 0 Common stock, par value $0.0001 per share 2022-12-09 4 J 0 15817934 0 D 0 I See Notes Common stock, par value $0.0001 per share 2022-12-09 4 J 0 7283484 0 A 7283484 I See Notes Common stock, par value $0.0001 per share 2022-12-09 4 J 0 8534450 0 A 8534450 I See Notes Stock Option 3.35 2032-12-01 Common stock, par value $0.0001 161849 161849 I See Notes Warrants 11.5 2022-12-09 4 J 0 11345489 D 2027-11-01 Common stock, par value $0.0001 11345489 0 I See Notes Warrants 11.5 2022-12-09 4 J 0 5224114 A 2027-11-01 Common stock, par value $0.0001 5224114 5224114 I See Notes Warrants 11.5 2022-12-09 4 J 0 6121375 A 2027-11-01 Common stock, par value $0.0001 6121375 6121375 I See Notes This form is being filed by each of the following Reporting Persons: (i) Avista Acquisition LP II, a Cayman Islands limited partnership ("Avista Sponsor"), (ii) Avista Acquisition GP LLC II, a Cayman Islands limited liability company ("Avista Sponsor GP"), which is the general partner of Avista Sponsor, (iii) Avista Capital Partners V, L.P., a Delaware limited partnership ("ACP V Onshore"), which is a limited partner of Avista Sponsor, (iv) Avista Capital Partners (Offshore) V, L.P., a Bermuda limited partnership ("ACP V Offshore"), which is a limited partner of Avista Sponsor, (v) Avista Capital Partners V GP, L.P., a Delaware limited partnership ("ACP V GP"), which is the general partner of ACP V Onshore and ACP V Offshore, (vi) Avista Capital Managing Member V, LLC, a Delaware limited liability company ("Avista Managing Member"), which is the general partner of ACP V VP, (vii) each of Thompson Dean and David Burgstahler, who are the managers of Avista Sponsor GP and Avista Managing Member (together with ACP V Onshore, ACP V Offshore, ACP V GP and Avista Managing Member, the "Avista Affiliates"), and (viii) Joshua Tamaroff, who is a Director of OmniAb, Inc. (f/k/a Avista Public Acquisition Corp. II) (the "Issuer"). Each of the transactions described in this Form 4 are being made in connection with the liquidation and dissolution of Avista Sponsor and Avista Sponsor GP. In connection with its liquidation, Avista Sponsor distributed all of its assets, consisting solely of securities of the Issuer, pro rata for no consideration to its limited partners, ACP V Onshore and ACP V Offshore. As a result of these transactions and their subsequent dissolution, Avista Sponsor and Avista Sponsor GP will no longer hold, directly or indirectly, any securities in the Issuer. Each of the transactions described in this Form 4 are being made in connection with the liquidation and dissolution of Avista Sponsor and Avista Sponsor GP. In connection with its liquidation, Avista Sponsor distributed all of its assets, consisting solely of securities of the Issuer, pro rata for no consideration to its limited partners, ACP V Onshore and ACP V Offshore. As a result of these transactions and their subsequent dissolution, Avista Sponsor and Avista Sponsor GP will no longer hold, directly or indirectly, any securities in the Issuer. Directly owned by ACP V Offshore. Each of the Avista Affiliates may be deemed to beneficially own the securities reported on this line item to the extent of their respective pecuniary interests. Each of the Avista Affiliates disclaims beneficial ownership of the securities reported on this line item, except to the extent of their pecuniary interest therein, if any. In accordance with the letter agreement, dated March 23, 2022, among the Issuer, Avista Sponsor, Legacy OmniAb and other parties (the "Letter Agreement"), if the Triggering Event (as defined in the Letter Agreement) has not occurred during the Earnout Period (as defined in the Letter Agreement), 1,293,299 shares of common stock will be automatically forfeited to the Issuer for no consideration. As a result of the transactions described in this Form 4, and pursuant to a Joinder to the Letter Agreement entered into on December 9, 2022 between ACP V Onshore, ACP V Offshore, Avista Sponsor and the Issuer, ACP V Onshore directly holds 595,508 of the shares of common stock subject to forfeiture pursuant to the terms of the Letter Agreement, and ACP V Offshore holds 697,791 of the shares of common stock subject to forfeiture pursuant to the terms of the Letter Agreement. Additionally, in connection with the transactions described in this Form 4, each of ACP V Onshore and ACP V Offshore provided to the Issuer an agreement stating that they will each be bound by the transfer restrictions included in the Amended and Restated Registration and Stockholder Rights Agreement, dated as of November 1, 2022, among the Issuer, the Sponsor and the other signatories thereto (the "A&R RSRA") for the duration of the Founder Shares Lock Up Period (as defined in the A&R RSRA). Represents stock options granted to Joshua Tamaroff in his capacity as a director of the Issuer, which stock options vest in three substantially similar annual installments beginning on November 1, 2023. Mr. Tamaroff is a partner at an affiliate of the Avista Affiliates and has assigned all rights, title and interest in such stock options to an affiliate of the Avista Affiliates controlled by Mr. Dean and Mr. Burgstahler. The Avista Affiliates are each "directors by deputization" for the purposes of Section 16 of the Securities Exchange Act of 1934, as amended. Each of the Avista Affiliates and Josh Tamaroff may be deemed to beneficially own the securities reported on this line item to the extent of their respective pecuniary interests. Each of the Avista Affiliates and Josh Tamaroff disclaims beneficial ownership of the securities reported on this line item, except to the extent of their pecuniary interest therein, if any. In connection with the completion of the Issuer's August 2021 initial public offering, Avista Sponsor purchased 8,233,333 warrants in a private placement from the Issuer, each exercisable to purchase (subject, initially, to the satisfaction of certain material conditions) one Class A ordinary share, par value $0.0001 per share, of the Issuer for $11.50 per share. The material conditions to exercise were satisfied upon the closing of the transactions contemplated by the Merger Agreement (the "Closing"), and the warrants by their terms became exercisable (including by cash settlement) on December 1., 2022. In connection with the Amended and Restated Forward Purchase Agreement, dated March 23, 2022, by and among the Issuer, Avista Sponsor and OmniAb, Inc.(the "A&R Forward Purchase Agreement"), Avista Sponsor purchased an aggregate 3,112,156 warrants in private placements from the Issuer, each exercisable to purchase (subject, initially, to the satisfaction of certain material conditions) one share of common stock, par value $0.0001 per share, of the Issuer for $11.50 per share. The material conditions to exercise were satisfied on the Closing, and the warrants by their terms became exercisable (including by cash settlement) December 31, 2022. Exhibit 24.1 (Power of Attorney) and Exhibit 99.1 (Joint Filer Information and Signatures) are hereby incorporated by reference herein. See Exhibit 99.1 2022-12-13 EX-24.1 2 tm2232531d1_ex24-1.htm EXHIBIT 24.1

Exhibit 24.1

POWER OF ATTORNEY

Know all by these presents, that the undersigned hereby constitutes and appoints Benjamin Silbert with full power of substitution, the undersigned’s true and lawful attorney-in-fact to:

execute for and on behalf of the undersigned with respect to OmniAb, Inc. (the “Company”), Schedules 13D and 13G and Forms 3, 4, and 5 in accordance with Sections 13 and 16(a) of the Securities Exchange Act of 1934 and the rules thereunder;

do and perform any and all acts for and on behalf of the undersigned which may be necessary or desirable to complete and execute any such Schedules 13D or 13G or Form 3, 4, or 5, complete and execute any amendment or amendments thereto, and timely file such form with the SEC and any stock exchange or similar authority; and

take any other action of any type whatsoever in connection with the foregoing which, in the opinion of such attorney-in-fact, may be of benefit to, in the best interest of, or legally required by, the undersigned, it being understood that the documents executed by such attorney-in-fact on behalf of the undersigned pursuant to this Power of Attorney shall be in such form and shall contain such terms and conditions as such attorney-in-fact may approve in such attorney-in-fact’s discretion.

The undersigned hereby grant to the attorney-in-fact full power and authority to do and perform any and every act and thing whatsoever requisite, necessary, or proper to be done in the exercise of any of the rights and powers herein granted, as fully to all intents and purposes as the undersigned might or could do if personally present, with full power of substitution or revocation, hereby ratifying and confirming all that such attorney-in-fact, or such attorney-in-fact’s substitute or substitutes, shall lawfully do or cause to be done by virtue of this power of attorney and the rights and powers herein granted. The undersigned acknowledge that the foregoing attorney-in-fact, in serving in such capacity at the request of the undersigned, is not assuming, nor is the Company assuming any of the undersigned’s responsibilities to comply with Sections 13 and 16 of the Securities Exchange Act of 1934.

This Power of Attorney shall remain in full force and effect until the undersigned is no longer required to file Forms 3, 4, and 5 with respect to the undersigned’s holdings of and transactions in securities issued by the Company, unless earlier revoked by the undersigned in a signed writing delivered to the foregoing attorney-in-fact.

[Signature Page Follows]

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of this 13^th day of December, 2022.

	Avista Capital Partners V, L.P.
	By its general partner, Avista Capital Partners V GP, L.P.
	By its general partner, Avista Capital Managing Member V, LLC
	/s/ Benjamin Silbert
	Name: Benjamin Silbert
	Title: Authorized Signatory

	Avista Capital Partners (Offshore) V, L.P.
	By its general partner, Avista Capital Partners V GP, L.P.
	By its general partner, Avista Capital Managing Member V, LLC
	/s/ Benjamin Silbert
	Name: Benjamin Silbert
	Title: Authorized Signatory

	Avista Capital Partners V GP, L.P.
	By its general partner, Avista Capital Managing Member V, LLC
	/s/ Benjamin Silbert
	Name: Benjamin Silbert
	Title: Authorized Signatory

	Avista Capital Managing Member V, LLC
	/s/ Benjamin Silbert
	Name: Benjamin Silbert
	Title: Authorized Signatory

	Joshua Tamaroff
	/s/ Joshua Tamaroff
	Joshua Tamaroff

EX-99.1 3 tm2232531d1_ex99-1.htm EXHIBIT 99.1

Exhibit 99.1

Joint Filer Information

Name of Joint Filer:	Avista Acquisition LP II
Address of Joint Filer:	65 East 55th Street, 18th Floor
	New York, NY 10022
Relationship of Joint Filer to Issuer:	10% Owner, Director
Issuer Name and Ticker or Trading Symbol:	OmniAb,Inc. [OABI]
Date of Earliest Transaction Required to be Reported (Month/Day/Year):	December 9, 2022
Designated Filer:	Avista Acquisition GP LLC II

Signature:

Avista Acquisition LP II

/s/ Benjamin Silbert
Name:	Benjamin Silbert
Title:	Attorney-in-fact

Dated: December 13, 2022

Joint Filer Information

(continued)

Name of Joint Filer:	Avista Acquisition GP LLC II
Address of Joint Filer:	65 East 55th Street, 18th Floor
	New York, NY 10022
Relationship of Joint Filer to Issuer:	10% Owner, Director
Issuer Name and Ticker or Trading Symbol:	OmniAb,Inc. [OABI]
Date of Earliest Transaction Required to be Reported (Month/Day/Year):	December 9, 2022
Designated Filer:	Avista Acquisition GP LLC II

Signature:

Avista Acquisition GP LLC II

/s/ Benjamin Silbert
Name:	Benjamin Silbert
Title:	Attorney-in-fact

Dated: December 13, 2022

Joint Filer Information

(continued)

Name of Joint Filer:	Thompson Dean
Address of Joint Filer:	65 East 55th Street, 18th Floor
	New York, NY 10022
Relationship of Joint Filer to Issuer:	10% Owner, Director
Issuer Name and Ticker or Trading Symbol:	OmniAb,Inc. [OABI]
Date of Earliest Transaction Required to be Reported (Month/Day/Year):	December 9, 2022
Designated Filer:	Avista Acquisition GP LLC II

Signature:

By:	/s/ Benjamin Silbert
	Name: Benjamin Silbert, Attorney-in-Fact for Thompson Dean

Dated: December 13, 2022

Joint Filer Information

(continued)

Name of Joint Filer:	David Burgstahler
Address of Joint Filer:	65 East 55th Street, 18th Floor
	New York, NY 10022
Relationship of Joint Filer to Issuer:	10% Owner, Director
Issuer Name and Ticker or Trading Symbol:	OmniAb,Inc. [OABI]
Date of Earliest Transaction Required to be Reported (Month/Day/Year):	December 9, 2022
Designated Filer:	Avista Acquisition GP LLC II

Signature:

By:	/s/ Benjamin Silbert
	Name: Benjamin Silbert, Attorney-in-Fact for David Burgstahler

Dated: December 13, 2022

Joint Filer Information

(continued)

Name of Joint Filer:	Joshua Tamaroff
Address of Joint Filer:	65 East 55th Street, 18th Floor
	New York, NY 10022
Relationship of Joint Filer to Issuer:	10% Owner, Director
Issuer Name and Ticker or Trading Symbol:	OmniAb,Inc. [OABI]
Date of Earliest Transaction Required to be Reported (Month/Day/Year):	December 9, 2022
Designated Filer:	Avista Acquisition GP LLC II

Signature:

By:	/s/ Benjamin Silbert
	Name: Benjamin Silbert, Attorney-in-Fact for Joshua Tamaroff

Dated: December 13, 2022

Joint Filer Information

(continued)

Name of Joint Filer:	Avista Capital Partners V, L.P.
Address of Joint Filer:	65 East 55th Street, 18th Floor
	New York, NY 10022
Relationship of Joint Filer to Issuer:	10% Owner, Director
Issuer Name and Ticker or Trading Symbol:	OmniAb,Inc. [OABI]
Date of Earliest Transaction Required to be Reported (Month/Day/Year):	December 9, 2022
Designated Filer:	Avista Acquisition GP LLC II

Signature:

Avista CAPITAL PARTNERS V, L.P.

/s/ Benjamin Silbert
Name:	Benjamin Silbert
Title:	Attorney-in-fact

Dated: December 13, 2022

Joint Filer Information.

(continued)

Name of Joint Filer:	Avista Capital Partners (Offshore) V, L.P.
Address of Joint Filer:	65 East 55th Street, 18th Floor
	New York, NY 10022
Relationship of Joint Filer to Issuer:	10% Owner, Director
Issuer Name and Ticker or Trading Symbol:	OmniAb,Inc. [OABI]
Date of Earliest Transaction Required to be Reported (Month/Day/Year):	December 9, 2022
Designated Filer:	Avista Acquisition GP LLC II

Signature:

Avista CAPITAL PARTNERS (OFFSHORE) V, l.P.

/s/ Benjamin Silbert
Name:	Benjamin Silbert
Title:	Attorney-in-fact

Dated: December 13, 2022

Joint Filer Information

(continued)

Name of Joint Filer:	Avista Capital Partners V GP, L.P.
Address of Joint Filer:	65 East 55th Street, 18th Floor
	New York, NY 10022
Relationship of Joint Filer to Issuer:	10% Owner, Director
Issuer Name and Ticker or Trading Symbol:	OmniAb,Inc. [OABI]
Date of Earliest Transaction Required to be Reported (Month/Day/Year):	December 9, 2022
Designated Filer:	Avista Acquisition GP LLC II

Signature:

Avista CAPITAL PARTNERS V GP, L.P.

/s/ Benjamin Silbert
Name:	Benjamin Silbert
Title:	Attorney-in-fact

Dated: December 13, 2022

Joint Filer Information

(continued)

Name of Joint Filer:	Avista Capital Managing Member V, LLC
Address of Joint Filer:	65 East 55th Street, 18th Floor
	New York, NY 10022
Relationship of Joint Filer to Issuer:	10% Owner, Director
Issuer Name and Ticker or Trading Symbol:	OmniAb,Inc. [OABI]
Date of Earliest Transaction Required to be Reported (Month/Day/Year):	December 9, 2022
Designated Filer:	Avista Acquisition GP LLC II

Signature:

Avista CAPITAL MANAGING MEMBER V, LLC

/s/ Benjamin Silbert
Name:	Benjamin Silbert
Title:	Attorney-in-fact

Dated: December 13, 2022