# EDGAR Filing Document

**Accession Number:** 0001846253
**File Stem:** 0001013594-25-001039
**Filing Date:** 2025-8
**Character Count:** 12977
**Document Hash:** b8220206a92f09044d9085062395cc49
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001013594-25-001039.hdr.sgml**: 20250814

**ACCESSION NUMBER**: 0001013594-25-001039

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13G/A

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20250814

**DATE AS OF CHANGE**: 20250814

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** OmniAb, Inc.
- **CENTRAL INDEX KEY:** 0001846253
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-COMMERCIAL PHYSICAL & BIOLOGICAL RESEARCH [8731]
- **ORGANIZATION NAME:** 08 Industrial Applications and Services
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-92783
- **FILM NUMBER:** 251219576

**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
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Whitefort Capital Management, LP
- **CENTRAL INDEX KEY:** 0001884931

**ORGANIZATION NAME:**
- **EIN:** 820808818
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G/A

**BUSINESS ADDRESS:**
- **STREET 1:** 12 E. 49TH STREET
- **STREET 2:** 40TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10017
- **BUSINESS PHONE:** 2122594370

**MAIL ADDRESS:**
- **STREET 1:** 12 E. 49TH STREET
- **STREET 2:** 40TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10017

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## SCHEDULE 13G

### Under the Securities Exchange Act of 1934

**(Amendment No. 1)**

**Issuer:** OmniAb, Inc.

**Title of Class of Securities:** Common Stock, $0.0001 par value per share

**CUSIP Number:** 68218J103

**Date of Event Which Requires Filing of this Statement:** 06/30/2025

**Check the appropriate box to designate the rule pursuant to which this Schedule is filed:**

- [ ] Rule 13d-1(b)

- [x] Rule 13d-1(c)

- [ ] Rule 13d-1(d)

---

| 1. | Names of Reporting Persons<br>Whitefort Capital Management, LP | Names of Reporting Persons<br>Whitefort Capital Management, LP |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>DE | Citizenship or Place of Organization<br>DE |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>10240146 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>10240146 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>10240146 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>10240146 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>8.4% | Percent of Class Represented by Amount in Row (9)<br>8.4% |
| 12. | Type of Reporting Person (See Instructions)<br>IA, PN | Type of Reporting Person (See Instructions)<br>IA, PN |

---

| 1. | Names of Reporting Persons<br>David Salanic | Names of Reporting Persons<br>David Salanic |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>I0 | Citizenship or Place of Organization<br>I0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>10240146 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>10240146 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>10240146 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>10240146 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>8.4% | Percent of Class Represented by Amount in Row (9)<br>8.4% |
| 12. | Type of Reporting Person (See Instructions)<br>IN, HC | Type of Reporting Person (See Instructions)<br>IN, HC |

---

| 1. | Names of Reporting Persons<br>Joseph Kaplan | Names of Reporting Persons<br>Joseph Kaplan |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>X1 | Citizenship or Place of Organization<br>X1 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>10240146 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>10240146 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>10240146 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>10240146 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>8.4% | Percent of Class Represented by Amount in Row (9)<br>8.4% |
| 12. | Type of Reporting Person (See Instructions)<br>IN, HC | Type of Reporting Person (See Instructions)<br>IN, HC |

---

**Item 1(a). Name of Issuer:**
OmniAb, Inc.

**Item 1(b). Address of Issuer's Principal Executive Offices:**
5980 HORTON STREET, SUITE 600, EMERYVILLE, California, 94608

**Item 2(a). Name of Person Filing:**
The names of the persons filing this statement on Schedule 13G are (collectively, the "Reporting Persons"):

Whitefort Capital Management, LP, a Delaware limited partnership ("Whitefort Management");

David Salanic, a French citizen ("Mr. Salanic"); and

Joseph Kaplan, a United States citizen ("Mr. Kaplan").

Whitefort Management acts as the investment manager of certain client accounts. Each of Mr. Salanic and Mr. Kaplan is a Co-Managing Partner of Whitefort Management.
By virtue of these relationships, each of Whitefort Management, Mr. Salanic and Mr. Kaplan may be deemed to have voting and dispositive power with respect to shares of Common Stock (as defined below) held in client accounts managed by Whitefort Management.

**Item 2(b). Address of Principal Business Office:**
The principal business address of each of the Reporting Persons is 12 East 49th Street, 40th Floor, New York, New York 10017.

**Item 2(c). Citizenship:**
Mr. Salanic is a citizen of France.

Mr. Kaplan is a citizen of the United States.

Whitefort Management is a limited partnership formed under the laws of the State of Delaware.

**Item 2(d). Title of Class of Securities:**
Common Stock, $0.0001 par value per share

**Item 2(e). CUSIP Number:**
68218J103

**Item 3. If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:**

(a) [ ] Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o).

(b) [ ] Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).

(c) [ ] Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c).

(d) [ ] Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8).

(e) [ ] An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);

(f) [ ] An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);

(g) [ ] A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);

(h) [ ] A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i) [ ] A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

(j) [ ] A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), if filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:

(k) [ ] Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).

**Item 4. Ownership:**

**(a) Amount beneficially owned:**

As of the close of business on June 30, 2025,
(i)	Whitefort Management, as the investment manager of certain client accounts, may be deemed to beneficially own the 10,240,146 Shares held in such accounts;
(ii)	Mr. Salanic, as a Co-Managing Partner of Whitefort Management, may be deemed to beneficially own the 10,240,146 Shares held in the client accounts managed by Whitefort Management.
(iii)	Mr. Kaplan, as a Co-Managing Partner of Whitefort Management, may be deemed to beneficially own the 10,240,146 Shares held in the client accounts managed by Whitefort Management.

**(b) Percent of class:**

The percentage of Shares reported owned by each person named herein is based upon 122,335,336 Shares outstanding as of May 1, 2025, as reported on the Issuer's Form 10-Q filed with the Securities and Exchange Commission on May 8, 2025. As of the close of business on June 30, 2025, each of the Reporting Persons may be deemed to beneficially own 8.4% of the outstanding Shares.

**(c) Number of shares as to which the person has:**

**(i) Sole power to vote or to direct the vote:**

See Cover Pages Items 5-8.

**(ii) Shared power to vote or to direct the vote:**

See Cover Pages Items 5-8.

**(iii) Sole power to dispose or to direct the disposition of:**

See Cover Pages Items 5-8.

**(iv) Shared power to dispose or to direct the disposition of:**

See Cover Pages Items 5-8.

**Item 5. Ownership of Five Percent or Less of a Class.**

[x] If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following.

**Item 6. Ownership of More than 5 Percent on Behalf of Another Person.**

Not Applicable

**Item 7. Identification and Classification of the Subsidiary**

Not Applicable

**Item 8. Identification and Classification of Members of the Group**

See Exhibit A on the Schedule 13G filed by the Reporting Persons with the Securities and Exchange Commission on June 6, 2025.

**Item 9. Notice of Dissolution of Group**

Not Applicable

**Item 10. Certification:**

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Whitefort Capital Management, LP**

**Date:** 08/14/2025

**By:** /s/ David Salanic

**Name & Title:** David Salanic, Co-Managing Partner

**David Salanic**

**Date:** 08/14/2025

**By:** /s/ David Salanic

**Name & Title:** David Salanic

**Joseph Kaplan**

**Date:** 08/14/2025

**By:** /s/ Joseph Kaplan

**Name & Title:** Joseph Kaplan