# EDGAR Filing Document

**Accession Number:** 0001749591
**File Stem:** 0001104659-26-011469
**Filing Date:** 2026-2
**Character Count:** 31340
**Document Hash:** 285635914b99cce57acaa4200caf640a
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-26-011469.hdr.sgml**: 20260206

**ACCESSION NUMBER**: 0001104659-26-011469

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

**PUBLIC DOCUMENT COUNT**: 4

**FILED AS OF DATE**: 20260206

**DATE AS OF CHANGE**: 20260206

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Kyverna Therapeutics, Inc.
- **CENTRAL INDEX KEY:** 0001994702
- **STANDARD INDUSTRIAL CLASSIFICATION:** BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 831365441
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-94441
- **FILM NUMBER:** 26607253

**BUSINESS ADDRESS:**
- **STREET 1:** 5980 HORTON STREET
- **STREET 2:** SUITE 550
- **CITY:** EMERYVILLE
- **STATE:** CA
- **ZIP:** 94608
- **BUSINESS PHONE:** 5106268331

**MAIL ADDRESS:**
- **STREET 1:** 5980 HORTON STREET
- **STREET 2:** SUITE 550
- **CITY:** EMERYVILLE
- **STATE:** CA
- **ZIP:** 94608
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Westlake BioPartners Fund I, L.P.
- **CENTRAL INDEX KEY:** 0001749591

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

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

**BUSINESS ADDRESS:**
- **STREET 1:** 3075 TOWNSGATE ROAD, SUITE 140
- **CITY:** WESTLAKE VILLAGE
- **STATE:** CA
- **ZIP:** 91361
- **BUSINESS PHONE:** (650) 740-4070

**MAIL ADDRESS:**
- **STREET 1:** 3075 TOWNSGATE ROAD, SUITE 140
- **CITY:** WESTLAKE VILLAGE
- **STATE:** CA
- **ZIP:** 91361

## Exhibit 99.1

**Exhibit 1**

**JOINT FILING AGREEMENT** 

The undersigned hereby agree that the foregoing statement on Schedule 13G is filed on behalf of each of the undersigned, and any amendments thereto executed by the undersigned shall be filed on behalf of each of the undersigned without the necessity of filing any additional joint filing agreement. The undersigned acknowledge that each is responsible for the timely filing of such statement on Schedule 13G and any amendments thereto, and for the completeness and accuracy of the information concerning him, her or it contained therein, but shall not be responsible for the completeness or accuracy of the information concerning the others of the undersigned, except to the extent that he, she or it knows or has reason to believe that such information is inaccurate or incomplete. This Joint Filing Agreement may be executed in any number of counterparts, all of which taken together shall constitute one and the same instrument.

Dated: November 8, 2024

---

| | | | |
|:---|:---|:---|:---|
| **Westlake BioPartners Fund I, L.P.** | **Westlake BioPartners Fund I, L.P.** | **Dr. Beth C. Seidenberg** | **Dr. Beth C. Seidenberg** |
| By: | Westlake BioPartners GP I, LLC | By: | /s/ Jennifer L. Kercher |
| Its: | General Partner |  | Jennifer L. Kercher |
|  |  |  | Attorney-in-Fact\* |
| By: | /s/ Jennifer L. Kercher |  |  |
|  | Jennifer L. Kercher | **Dr. Sean E. Harper** | **Dr. Sean E. Harper** |
|  | Attorney-in-Fact\* |  |  |
|  |  | By: | /s/ Jennifer L. Kercher |
| **Westlake BioPartners GP I, LLC** | **Westlake BioPartners GP I, LLC** |  | Jennifer L. Kercher |
|  |  |  | Attorney-in-Fact\* |
| By: | /s/ Jennifer L. Kercher |  |  |
|  | Jennifer L. Kercher | \*This Joint Filing Agreement was executed pursuant to a Power of Attorney. Note that copies of the applicable Powers of Attorney are included herein as exhibits to this Schedule 13G.™ | \*This Joint Filing Agreement was executed pursuant to a Power of Attorney. Note that copies of the applicable Powers of Attorney are included herein as exhibits to this Schedule 13G.™ |
|  | Attorney-in-Fact\* | \*This Joint Filing Agreement was executed pursuant to a Power of Attorney. Note that copies of the applicable Powers of Attorney are included herein as exhibits to this Schedule 13G.™ | \*This Joint Filing Agreement was executed pursuant to a Power of Attorney. Note that copies of the applicable Powers of Attorney are included herein as exhibits to this Schedule 13G.™ |
|  |  | \*This Joint Filing Agreement was executed pursuant to a Power of Attorney. Note that copies of the applicable Powers of Attorney are included herein as exhibits to this Schedule 13G.™ | \*This Joint Filing Agreement was executed pursuant to a Power of Attorney. Note that copies of the applicable Powers of Attorney are included herein as exhibits to this Schedule 13G.™ |
| **Westlake BioPartners Opportunity Fund I, L.P.** | **Westlake BioPartners Opportunity Fund I, L.P.** | \*This Joint Filing Agreement was executed pursuant to a Power of Attorney. Note that copies of the applicable Powers of Attorney are included herein as exhibits to this Schedule 13G.™ | \*This Joint Filing Agreement was executed pursuant to a Power of Attorney. Note that copies of the applicable Powers of Attorney are included herein as exhibits to this Schedule 13G.™ |
| By: | Westlake BioPartners Opportunity GP I, LLC |  |  |
| Its: | General Partner |  |  |
| By: | /s/ Jennifer L. Kercher |  |  |
|  | Jennifer L. Kercher |  |  |
|  | Attorney-in-Fact\* |  |  |
| **Westlake BioPartners Opportunity GP I, LLC** | **Westlake BioPartners Opportunity GP I, LLC** |  |  |
| By: | /s/ Jennifer L. Kercher |  |  |
|  | Jennifer L. Kercher |  |  |
|  | Attorney-in-Fact\* |  |  |

---

## Exhibit 99.2

**Exhibit 2**

**<u>Power of Attorney</u>**

Each of the undersigned entities and individuals (collectively, the "Reporting Persons") hereby authorizes and designates Westlake BioPartners GP I, LLC or such other person or entity as is designated in writing by Beth C. Seidenberg (the "Designated Filer") as the beneficial owner to prepare and file on behalf of such Reporting Person individually, or jointly together with the other Reporting Persons, any and all reports, notices, communications and other documents (including, but not limited to, reports on Form D, Form ADV, Schedule 13D, Schedule 13F, Schedule 13G, Schedule 13H, Form 3, Form 4 and Form 5) that such Reporting Person may be required to file with the United States Securities and Exchange Commission pursuant to the Securities Act of 1933, as amended (together with the implementing regulations thereto, the "Act") and the Securities Exchange Act of 1934, as amended (together with the implementing regulations thereto, the "Exchange Act") or any other domestic or international state, federal or national agency (collectively, the "Reports") with respect to each Reporting Person's ownership of, or transactions in, securities of any entity whose securities are beneficially owned (directly or indirectly) by such Reporting Person (collectively, the "Companies").

Each Reporting Person hereby further (i) authorizes and designates Jennifer L. Kercher (the "Authorized Signatory") to execute and file on behalf of such Reporting Person the Reports and to perform any and all other acts, which in the opinion of the Designated Filer or Authorized Signatory may be necessary or incidental to the performance of the foregoing powers herein granted and (ii) approves and ratifies all prior Reports executed and/or filed on behalf of each such Reporting Person by the Authorized Signatory.

The authority of the Designated Filer and the Authorized Signatory under this Power of Attorney with respect to each Reporting Person shall continue until such Reporting Person is no longer required to file any Reports with respect to the Reporting Person's ownership of, or transactions in, the securities of the Companies, unless earlier revoked in writing. Each Reporting Person acknowledges that the Designated Filer and the Authorized Signatory are not assuming any of the Reporting Person's responsibilities to comply with the Act or the Exchange Act.

Date: February 6, 2024

---

| | | | |
|:---|:---|:---|:---|
| WESTLAKE BIOPARTNERS FUND I, L.P.<br> a Delaware Limited Partnership | WESTLAKE BIOPARTNERS FUND I, L.P.<br> a Delaware Limited Partnership | WESTLAKE BIOPARTNERS GP I, LLC<br> a Delaware Limited Liability Company | WESTLAKE BIOPARTNERS GP I, LLC<br> a Delaware Limited Liability Company |
| By: | Westlake BioPartners GP I, LLC | By: | /s/ Sean E. Harper |
|  | a Delaware Limited Liability Company Its General Partner |  | Sean E. Harper |
|  |  |  | Managing Director |
| By: | /s/ Sean E. Harper |  |  |
|  | Sean E. Harper | By: | /s/ Beth C. Seidenberg |
|  | Managing Director |  | Beth C. Seidenberg |
|  |  |  | Managing Director |
| By: | /s/ Beth C. Seidenberg |  |  |
|  | Beth C. Seidenberg |  |  |
|  | Managing Director |  |  |
| BETH C. SEIDENBERG | BETH C. SEIDENBERG | SEAN E. HARPER | SEAN E. HARPER |
| By: | /s/ Beth C. Seidenberg | By: | /s/ Sean E. Harper |
|  | Beth C. Seidenberg |  | Sean E. Harper |

---

## Exhibit 99.3

**Exhibit 3**

**<u>Power of Attorney</u>**

Each of the undersigned entities and individuals (collectively, the "Reporting Persons") hereby authorizes and designates Westlake BioPartners Opportunity GP I, LLC or such other person or entity as is designated in writing by Beth C. Seidenberg (the "Designated Filer") as the beneficial owner to prepare and file on behalf of such Reporting Person individually, or jointly together with the other Reporting Persons, any and all reports, notices, communications and other documents (including, but not limited to, reports on Form D, Form ADV, Schedule 13D, Schedule 13F, Schedule 13G, Schedule 13H, Form 3, Form 4 and Form 5) that such Reporting Person may be required to file with the United States Securities and Exchange Commission pursuant to the Securities Act of 1933, as amended (together with the implementing regulations thereto, the "Act") and the Securities Exchange Act of 1934, as amended (together with the implementing regulations thereto, the "Exchange Act") or any other domestic or international state, federal or national agency (collectively, the "Reports") with respect to each Reporting Person's ownership of, or transactions in, securities of any entity whose securities are beneficially owned (directly or indirectly) by such Reporting Person (collectively, the "Companies").

Each Reporting Person hereby further (i) authorizes and designates Jennifer L. Kercher (the "Authorized Signatory") to execute and file on behalf of such Reporting Person the Reports and to perform any and all other acts, which in the opinion of the Designated Filer or Authorized Signatory may be necessary or incidental to the performance of the foregoing powers herein granted and (ii) approves and ratifies all prior Reports executed and/or filed on behalf of each such Reporting Person by the Authorized Signatory.

The authority of the Designated Filer and the Authorized Signatory under this Power of Attorney with respect to each Reporting Person shall continue until such Reporting Person is no longer required to file any Reports with respect to the Reporting Person's ownership of, or transactions in, the securities of the Companies, unless earlier revoked in writing. Each Reporting Person acknowledges that the Designated Filer and the Authorized Signatory are not assuming any of the Reporting Person's responsibilities to comply with the Act or the Exchange Act.

Date: February 6, 2024

---

| | | | |
|:---|:---|:---|:---|
| WESTLAKE BIOPARTNERS OPPORTUNITY FUND I, L.P.<br> a Delaware Limited Partnership | WESTLAKE BIOPARTNERS OPPORTUNITY FUND I, L.P.<br> a Delaware Limited Partnership | WESTLAKE BIOPARTNERS OPPORTUNITY GP I, LLC<br> a Delaware Limited Liability Company | WESTLAKE BIOPARTNERS OPPORTUNITY GP I, LLC<br> a Delaware Limited Liability Company |
| By: | Westlake BioPartners Opportunity GP I, LLC | By: | /s/ Sean E. Harper |
|  | a Delaware Limited Liability Company Its General Partner |  | Sean E. Harper |
|  |  |  | Managing Director |
| By: | /s/ Sean E. Harper |  |  |
|  | Sean E. Harper | By: | /s/ Beth C. Seidenberg |
|  | Managing Director |  | Beth C. Seidenberg |
|  |  |  | Managing Director |
| By: | /s/ Beth C. Seidenberg |  |  |
|  | Beth C. Seidenberg |  |  |
|  | Managing Director |  |  |
| BETH C. SEIDENBERG | BETH C. SEIDENBERG | SEAN E. HARPER | SEAN E. HARPER |
| By: | /s/ Beth C. Seidenberg | By: | /s/ Sean E. Harper |
|  | Beth C. Seidenberg |  | Sean E. Harper |

---

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

## SCHEDULE 13G

### Under the Securities Exchange Act of 1934

**(Amendment No. 1)**

**Issuer:** Kyverna Therapeutics, Inc.

**Title of Class of Securities:** Common Stock, par value $0.00001 per share

**CUSIP Number:** 501976104

**Date of Event Which Requires Filing of this Statement:** 12/31/2025

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

- [ ] Rule 13d-1(b)

- [ ] Rule 13d-1(c)

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

---

| 1. | Names of Reporting Persons<br>Westlake BioPartners Fund I, L.P. ("Westlake Fund I") | Names of Reporting Persons<br>Westlake BioPartners Fund I, L.P. ("Westlake Fund I") |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [x] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [x] |
| 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>3787940.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>3787940.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>3787940.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>3787940.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>3787940.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>3787940.00 |
| 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>6.3% | Percent of Class Represented by Amount in Row (9)<br>6.3% |
| 12. | Type of Reporting Person (See Instructions)<br>PN | Type of Reporting Person (See Instructions)<br>PN |

**Comment for Type of Reporting Person:** Row 5 - 3,787,940 shares, except that Westlake BioPartners GP I, LLC ("Westlake GP I"), the general partner of Westlake BioPartners Fund I, L.P. ("Westlake Fund I"), may be deemed to have sole voting power, and Dr. Beth C. Seidenberg ("Seidenberg"), the managing director of Westlake GP I, may be deemed to have sole power to vote these shares.

Row 7 - 3,787,940 shares, except that Westlake GP I, the general partner of Westlake Fund I, may be deemed to have sole dispositive power, and Seidenberg, the managing director of Westlake GP I, may be deemed to have sole power to dispose of these shares.

---

| 1. | Names of Reporting Persons<br>Westlake BioPartners GP I, LLC ("Westlake GP I") | Names of Reporting Persons<br>Westlake BioPartners GP I, LLC ("Westlake GP I") |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [x] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [x] |
| 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>3787940.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>3787940.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>3787940.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>3787940.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>3787940.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>3787940.00 |
| 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>6.3% | Percent of Class Represented by Amount in Row (9)<br>6.3% |
| 12. | Type of Reporting Person (See Instructions)<br>OO | Type of Reporting Person (See Instructions)<br>OO |

**Comment for Type of Reporting Person:** Row 5 - 3,787,940 shares, all of which are owned directly by Westlake Fund I.  Westlake GP I, the general partner of Westlake Fund I, may be deemed to have sole voting power, and Seidenberg, the managing director of Westlake GP I, may be deemed to have sole power to vote these shares.

Row 7 - 3,787,940 shares, all of which are owned directly by Westlake Fund I.  Westlake GP I, the general partner of Westlake Fund I, may be deemed to have sole dispositive power, and Seidenberg, the managing director of Westlake GP I, may be deemed to have sole power to dispose of these shares.

---

| 1. | Names of Reporting Persons<br>Westlake BioPartners Opportunity Fund I, L.P. ("Westlake Opportunity Fund I") | Names of Reporting Persons<br>Westlake BioPartners Opportunity Fund I, L.P. ("Westlake Opportunity Fund I") |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [x] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [x] |
| 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>869317.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>869317.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>869317.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>869317.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>869317.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>869317.00 |
| 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>1.5% | Percent of Class Represented by Amount in Row (9)<br>1.5% |
| 12. | Type of Reporting Person (See Instructions)<br>PN | Type of Reporting Person (See Instructions)<br>PN |

**Comment for Type of Reporting Person:** Row 5 - 869,317 shares, except that Westlake BioPartners Opportunity GP I, LLC ("Westlake Opportunity GP I"), the general partner of Westlake BioPartners Opportunity Fund I, L.P. ("Westlake Opportunity Fund I"), may be deemed to have sole voting power, and Seidenberg, the managing director of Westlake Opportunity GP I, may be deemed to have sole power to vote these shares.

Row 7 - 869,317 shares, except that Westlake Opportunity GP I, the general partner of Westlake Opportunity Fund I, may be deemed to have sole dispositive power, and Seidenberg, the managing director of Westlake Opportunity GP I, may be deemed to have sole power to dispose of these shares.

---

| 1. | Names of Reporting Persons<br>Westlake BioPartners Opportunity GP I, LLC ("Westlake Opportunity GP I") | Names of Reporting Persons<br>Westlake BioPartners Opportunity GP I, LLC ("Westlake Opportunity GP I") |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [x] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [x] |
| 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>869317.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>869317.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>869317.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>869317.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>869317.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>869317.00 |
| 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>1.5% | Percent of Class Represented by Amount in Row (9)<br>1.5% |
| 12. | Type of Reporting Person (See Instructions)<br>OO | Type of Reporting Person (See Instructions)<br>OO |

**Comment for Type of Reporting Person:** Row 5 - 869,317 shares, all of which are owned directly by Westlake Opportunity Fund I.  Westlake Opportunity GP I, the general partner of Westlake Opportunity Fund I, may be deemed to have sole voting power, and Seidenberg, the managing director of Westlake Opportunity GP I, may be deemed to have sole power to vote these shares.

Row 7 - 869,317 shares, all of which are owned directly by Westlake Opportunity Fund I.  Westlake Opportunity GP I, the general partner of Westlake Opportunity Fund I, may be deemed to have sole dispositive power, and Seidenberg, the managing director of Westlake Opportunity GP I, may be deemed to have sole power to dispose of these shares.

---

| 1. | Names of Reporting Persons<br>Dr. Beth C. Seidenberg ("Seidenberg") | Names of Reporting Persons<br>Dr. Beth C. Seidenberg ("Seidenberg") |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [x] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [x] |
| 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>4657257.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>4657257.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>4657257.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>4657257.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>4657257.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>4657257.00 |
| 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>7.8% | Percent of Class Represented by Amount in Row (9)<br>7.8% |
| 12. | Type of Reporting Person (See Instructions)<br>IN | Type of Reporting Person (See Instructions)<br>IN |

**Comment for Type of Reporting Person:** Row 5 - 4,657,257 shares, of which 3,787,940 shares are owned directly by Westlake Fund I and 869,317 shares are owned directly by Westlake Opportunity Fund I.  Westlake GP I and Westlake Opportunity GP I, the general partners of Westlake Fund I and Westlake Opportunity Fund I, respectively, may be deemed to have sole voting power over such shares, and Seidenberg, the managing director of Westlake GP I and Westlake Opportunity GP I, may be deemed to have sole power to vote these shares.

Row 7 - 4,657,257 shares, of which 3,787,940 shares are owned directly by Westlake Fund I and 869,317 shares are owned directly by Westlake Opportunity Fund I.  Westlake GP I and Westlake Opportunity GP I, the general partners of Westlake Fund I and Westlake Opportunity Fund I, respectively, may be deemed to have sole dispositive power over such shares, and Seidenberg, the managing director of Westlake GP I and Westlake Opportunity GP I, may be deemed to have sole power to dispose of these shares.

---

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

**Item 1(b). Address of Issuer's Principal Executive Offices:**
5980 Horton St., STE 550, Emeryville, CA 94608

**Item 2(a). Name of Person Filing:**
This Statement is being filed by Westlake BioPartners Fund I, L.P. ("Westlake Fund I"), Westlake BioPartners GP I, LLC ("Westlake GP I"), Westlake BioPartners Opportunity Fund I, L.P. ("Westlake Opportunity Fund I") and Westlake BioPartners Opportunity GP I, LLC ("Westlake Opportunity GP I" and together with Westlake Fund I, Westlake GP I and Westlake Opportunity Fund I, the "Reporting Entities") and Dr. Beth C. Seidenberg ("Seidenberg") (the "Reporting Individual"). The Reporting Entities and the Reporting Individual are collectively referred to as the "Reporting Persons."  Dr. Sean E. Harper, a Reporting Person on the initial Schedule 13G with respect to the Issuer, is no longer a managing director of Westlake GP I and Westlake Opportunity GP I, and accordingly, is not a Reporting Person on this Schedule 13G Amendment No. 1.

**Item 2(b). Address of Principal Business Office:**
The address of the principal business office of each Reporting Person is c/o Westlake BioPartners, LLC, 3075 Townsgate Road, Suite 140, Westlake Village, California 91361.

**Item 2(c). Citizenship:**
Each of Westlake GP I and Westlake Opportunity GP I is a limited liability company organized under the laws of the State of Delaware. Each of Westlake Fund I and Westlake Opportunity Fund I is a limited partnership organized under the laws of the State of Delaware. The Reporting Individual is a citizen of the United States of America.

**Item 2(d). Title of Class of Securities:**
Common Stock, par value $0.00001 per share

**Item 2(e). CUSIP Number:**
501976104

**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:**

See Row 9 of the cover page for each Reporting Person.*

**(b) Percent of class:**

See Row 11 of the cover page for each Reporting Person.*

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

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

See Row 5 of the cover page for each Reporting Person.*

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

See Row 6 of the cover page for each Reporting Person.*

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

See Row 7 of the cover page for each Reporting Person.*

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

See Row 8 of the cover page for each Reporting Person.*
* Except to the extent of a Reporting Person's pecuniary interest therein, each Reporting Person disclaims beneficial ownership of such shares of Common Stock, except for the shares, if any, such Reporting Person holds of record.

**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.**

Under certain circumstances set forth in the limited partnership agreement of each of Westlake Fund I and Westlake Opportunity Fund I and the limited liability company agreement of each of Westlake GP I and Westlake Opportunity GP I, the general and limited partners or members, as the case may be, of each of such entities may be deemed to have the right to receive dividends from, or the proceeds from, the sale of securities of the Issuer owned by each such entity of which they are a partner or member, as the case may be.

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

Not Applicable

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

Not Applicable

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

Not Applicable

**Item 10. Certification:**

—

### 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.

**Westlake BioPartners Fund I, L.P. ("Westlake Fund I")**

**Date:** 02/05/2026

**By:** /s/ Jennifer L. Kercher

**Name & Title:** Jennifer L. Kercher/Attorney-in-Fact*, Westlake BioPartners GP I, LLC, Its General Partner

**Westlake BioPartners GP I, LLC ("Westlake GP I")**

**Date:** 02/05/2026

**By:** /s/ Jennifer L. Kercher

**Name & Title:** Jennifer L. Kercher/Attorney-in-Fact*

**Westlake BioPartners Opportunity Fund I, L.P. ("Westlake Opportunity Fund I")**

**Date:** 02/05/2026

**By:** /s/ Jennifer L. Kercher

**Name & Title:** Jennifer L. Kercher/Attorney-in-Fact*, Westlake BioPartners Opportunity GP I, LLC, Its General Partner

**Westlake BioPartners Opportunity GP I, LLC ("Westlake Opportunity GP I")**

**Date:** 02/05/2026

**By:** /s/ Jennifer L. Kercher

**Name & Title:** Jennifer L. Kercher/Attorney-in-Fact*

**Dr. Beth C. Seidenberg ("Seidenberg")**

**Date:** 02/05/2026

**By:** /s/ Jennifer L. Kercher

**Name & Title:** Jennifer L. Kercher/Attorney-in-Fact*