# EDGAR Filing Document

**Accession Number:** 0001792205
**File Stem:** 0001104659-26-011662
**Filing Date:** 2026-2
**Character Count:** 25536
**Document Hash:** 81627c6b22ac0567c49596d62fdfbcce
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-26-011662.hdr.sgml**: 20260206

**ACCESSION NUMBER**: 0001104659-26-011662

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260204

**FILED AS OF DATE**: 20260206

**DATE AS OF CHANGE**: 20260206

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Foresite Capital Fund IV, L.P.
- **CENTRAL INDEX KEY:** 0001704131

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

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-43085
- **FILM NUMBER:** 26609312

**BUSINESS ADDRESS:**
- **STREET 1:** 600 MONTGOMERY STREET, SUITE 4500
- **CITY:** SAN FRANCISCO
- **STATE:** CA
- **ZIP:** 94111
- **BUSINESS PHONE:** 415-877-4887

**MAIL ADDRESS:**
- **STREET 1:** 600 MONTGOMERY STREET, SUITE 4500
- **CITY:** SAN FRANCISCO
- **STATE:** CA
- **ZIP:** 94111
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Foresite Capital Management IV, LLC
- **CENTRAL INDEX KEY:** 0001704132

**ORGANIZATION NAME:**
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-43085
- **FILM NUMBER:** 26609313

**BUSINESS ADDRESS:**
- **STREET 1:** 900 LARKSPUR LANDING CIRCLE, SUITE 150
- **CITY:** LARKSPUR
- **STATE:** CA
- **ZIP:** 94939
- **BUSINESS PHONE:** 415-877-4887

**MAIL ADDRESS:**
- **STREET 1:** 900 LARKSPUR LANDING CIRCLE, SUITE 150
- **CITY:** LARKSPUR
- **STATE:** CA
- **ZIP:** 94939
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Foresite Capital Fund V, L.P.
- **CENTRAL INDEX KEY:** 0001792204

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

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-43085
- **FILM NUMBER:** 26609310

**BUSINESS ADDRESS:**
- **STREET 1:** 600 MONTGOMERY STREET, SUITE 4500
- **CITY:** SAN FRANCISCO
- **STATE:** CA
- **ZIP:** 94111
- **BUSINESS PHONE:** 415-877-4887

**MAIL ADDRESS:**
- **STREET 1:** 600 MONTGOMERY STREET, SUITE 4500
- **CITY:** SAN FRANCISCO
- **STATE:** CA
- **ZIP:** 94111
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Foresite Capital Opportunity Fund V, L.P.
- **CENTRAL INDEX KEY:** 0001792205

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

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-43085
- **FILM NUMBER:** 26609308

**BUSINESS ADDRESS:**
- **STREET 1:** 600 MONTGOMERY STREET, SUITE 4500
- **CITY:** SAN FRANCISCO
- **STATE:** CA
- **ZIP:** 94111
- **BUSINESS PHONE:** 415-877-4887

**MAIL ADDRESS:**
- **STREET 1:** 600 MONTGOMERY STREET, SUITE 4500
- **CITY:** SAN FRANCISCO
- **STATE:** CA
- **ZIP:** 94111
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Foresite Capital VI-A Management, LLC
- **CENTRAL INDEX KEY:** 0001899218

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

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-43085
- **FILM NUMBER:** 26609307

**BUSINESS ADDRESS:**
- **STREET 1:** 900 LARKSPUR LANDING CIRCLE, SUITE 150
- **CITY:** LARKSPUR
- **STATE:** CA
- **ZIP:** 94939
- **BUSINESS PHONE:** 415-877-4887

**MAIL ADDRESS:**
- **STREET 1:** 900 LARKSPUR LANDING CIRCLE, SUITE 150
- **CITY:** LARKSPUR
- **STATE:** CA
- **ZIP:** 94939
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Foresite Capital Opportunity Management V, LLC
- **CENTRAL INDEX KEY:** 0001792207

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

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-43085
- **FILM NUMBER:** 26609309

**BUSINESS ADDRESS:**
- **STREET 1:** 900 LARKSPUR LANDING CIRCLE, SUITE 150
- **CITY:** LARKSPUR
- **STATE:** CA
- **ZIP:** 94939
- **BUSINESS PHONE:** 415-877-4887

**MAIL ADDRESS:**
- **STREET 1:** 900 LARKSPUR LANDING CIRCLE, SUITE 150
- **CITY:** LARKSPUR
- **STATE:** CA
- **ZIP:** 94939
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Foresite Capital Management V, LLC
- **CENTRAL INDEX KEY:** 0001792206

**ORGANIZATION NAME:**
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-43085
- **FILM NUMBER:** 26609311

**BUSINESS ADDRESS:**
- **STREET 1:** 900 LARKSPUR LANDING CIRCLE, SUITE 150
- **CITY:** LARKSPUR
- **STATE:** CA
- **ZIP:** 94939
- **BUSINESS PHONE:** 415-877-4887

**MAIL ADDRESS:**
- **STREET 1:** 900 LARKSPUR LANDING CIRCLE, SUITE 150
- **CITY:** LARKSPUR
- **STATE:** CA
- **ZIP:** 94939
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Foresite Capital VI-A, LLC
- **CENTRAL INDEX KEY:** 0001899120

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

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-43085
- **FILM NUMBER:** 26609306

**BUSINESS ADDRESS:**
- **STREET 1:** 900 LARKSPUR LANDING CIRCLE, SUITE 150
- **CITY:** LARKSPUR
- **STATE:** CA
- **ZIP:** 94939
- **BUSINESS PHONE:** 4158774887

**MAIL ADDRESS:**
- **STREET 1:** 900 LARKSPUR LANDING CIRCLE, SUITE 150
- **CITY:** LARKSPUR
- **STATE:** CA
- **ZIP:** 94939
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Eikon Therapeutics, Inc.
- **CENTRAL INDEX KEY:** 0001861123
- **STANDARD INDUSTRIAL CLASSIFICATION:** BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 842807586
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 230 HARRIET TUBMAN WAY
- **CITY:** MILLBRAE
- **STATE:** CA
- **ZIP:** 94030
- **BUSINESS PHONE:** 341-777-0566

**MAIL ADDRESS:**
- **STREET 1:** 230 HARRIET TUBMAN WAY
- **CITY:** MILLBRAE
- **STATE:** CA
- **ZIP:** 94030

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

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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

[ ] Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Foresite Capital Management IV, LLC<br><sub>(Last) (First) (Middle)</sub><br>C/O FORESITE CAPITAL MANAGEMENT<br>9200 SUNSET BOULEVARD, SUITE 515<br><sub>(Street)</sub><br>WEST HOLLYWOOD, CA 90069<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-02-04 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Eikon Therapeutics, Inc. [ EIKN ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Foresite Capital Fund IV, L.P.<br><sub>(Last) (First) (Middle)</sub><br>C/O FORESITE CAPITAL MANAGEMENT<br>9200 SUNSET BOULEVARD, SUITE 515<br><sub>(Street)</sub><br>WEST HOLLYWOOD, CA 90069<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-02-04 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Eikon Therapeutics, Inc. [ EIKN ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Foresite Capital Management V, LLC<br><sub>(Last) (First) (Middle)</sub><br>C/O FORESITE CAPITAL MANAGEMENT<br>9200 SUNSET BOULEVARD, SUITE 515<br><sub>(Street)</sub><br>WEST HOLLYWOOD, CA 90069<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-02-04 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Eikon Therapeutics, Inc. [ EIKN ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Foresite Capital Fund V, L.P.<br><sub>(Last) (First) (Middle)</sub><br>C/O FORESITE CAPITAL MANAGEMENT<br>9200 SUNSET BOULEVARD, SUITE 515<br><sub>(Street)</sub><br>WEST HOLLYWOOD, CA 90069<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-02-04 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Eikon Therapeutics, Inc. [ EIKN ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Foresite Capital Opportunity Management V, LLC<br><sub>(Last) (First) (Middle)</sub><br>C/O FORESITE CAPITAL MANAGEMENT<br>9200 SUNSET BOULEVARD, SUITE 515<br><sub>(Street)</sub><br>WEST HOLLYWOOD, CA 90069<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-02-04 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Eikon Therapeutics, Inc. [ EIKN ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Foresite Capital Opportunity Fund V, L.P.<br><sub>(Last) (First) (Middle)</sub><br>C/O FORESITE CAPITAL MANAGEMENT<br>9200 SUNSET BOULEVARD, SUITE 515<br><sub>(Street)</sub><br>WEST HOLLYWOOD, CA 90069<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-02-04 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Eikon Therapeutics, Inc. [ EIKN ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Foresite Capital VI-A Management, LLC<br><sub>(Last) (First) (Middle)</sub><br>C/O FORESITE CAPITAL MANAGEMENT<br>9200 SUNSET BOULEVARD, SUITE 515<br><sub>(Street)</sub><br>WEST HOLLYWOOD, CA 90069<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-02-04 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Eikon Therapeutics, Inc. [ EIKN ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Foresite Capital VI-A, LLC<br><sub>(Last) (First) (Middle)</sub><br>C/O FORESITE CAPITAL MANAGEMENT<br>9200 SUNSET BOULEVARD, SUITE 515<br><sub>(Street)</sub><br>WEST HOLLYWOOD, CA 90069<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-02-04 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [X] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Eikon Therapeutics, Inc. [ EIKN ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock | 2026-02-04 |  | C<sup>(1)</sup> |  | 1340878 | A | $0.00 | 1340878 | I | See Footnote<sup>(2)</sup> |
| Common Stock | 2026-02-04 |  | C<sup>(1)</sup> |  | 335521 | A | $0.00 | 1676399 | I | See Footnote<sup>(2)</sup> |
| Common Stock | 2026-02-04 |  | C<sup>(1)</sup> |  | 37855 | A | $0.00 | 1714254 | I | See Footnote<sup>(2)</sup> |
| Common Stock | 2026-02-04 |  | C<sup>(1)</sup> |  | 229428 | A | $0.00 | 1943682 | I | See Footnote<sup>(2)</sup> |
| Common Stock | 2026-02-04 |  | C<sup>(1)</sup> |  | 697885 | A | $0.00 | 697885 | I | See Footnote<sup>(3)</sup> |
| Common Stock | 2026-02-04 |  | C<sup>(1)</sup> |  | 37855 | A | $0.00 | 735740 | I | See Footnote<sup>(3)</sup> |
| Common Stock | 2026-02-04 |  | C<sup>(1)</sup> |  | 1626 | A | $0.00 | 737366 | I | See Footnote<sup>(3)</sup> |
| Common Stock | 2026-02-04 |  | C<sup>(1)</sup> |  | 67207 | A | $0.00 | 804573 | I | See Footnote<sup>(3)</sup> |
| Common Stock | 2026-02-04 |  | C<sup>(1)</sup> |  | 458855 | A | $0.00 | 1263428 | I | See Footnote<sup>(3)</sup> |
| Common Stock | 2026-02-04 |  | C<sup>(1)</sup> |  | 348942 | A | $0.00 | 348942 | I | See Footnote<sup>(4)</sup> |
| Common Stock | 2026-02-04 |  | C<sup>(1)</sup> |  | 37855 | A | $0.00 | 386797 | I | See Footnote<sup>(4)</sup> |
| Common Stock | 2026-02-04 |  | C<sup>(1)</sup> |  | 922 | A | $0.00 | 387719 | I | See Footnote<sup>(4)</sup> |
| Common Stock | 2026-02-04 |  | C<sup>(1)</sup> |  | 38133 | A | $0.00 | 425852 | I | See Footnote<sup>(4)</sup> |
| Common Stock | 2026-02-04 |  | C<sup>(1)</sup> |  | 408725 | A | $0.00 | 408725 | I | See Footnote<sup>(5)</sup> |
| Common Stock | 2026-02-04 |  | P |  | 55555 | A | $18.00 | 1318983 | I | See Footnote<sup>(3)</sup> |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Series A Preferred Stock | <sup>(1)</sup> | 2026-02-04 |  | C<sup>(1)</sup> |  |  | 10000000 | <sup>(1)</sup> | <sup>(1)</sup> | Common Stock | 1340878 | $0.00 | 0 | I | See Footnote<sup>(2)</sup> |
| Series A-1 Preferred Stock | <sup>(1)</sup> | 2026-02-04 |  | C<sup>(1)</sup> |  |  | 2502252 | <sup>(1)</sup> | <sup>(1)</sup> | Common Stock | 335521 | $0.00 | 0 | I | See Footnote<sup>(2)</sup> |
| Series A-1 Preferred Stock | <sup>(1)</sup> | 2026-02-04 |  | C<sup>(1)</sup> |  |  | 5204684 | <sup>(1)</sup> | <sup>(1)</sup> | Common Stock | 697885 | $0.00 | 0 | I | See Footnote<sup>(3)</sup> |
| Series A-1 Preferred Stock | <sup>(1)</sup> | 2026-02-04 |  | C<sup>(1)</sup> |  |  | 2602342 | <sup>(1)</sup> | <sup>(1)</sup> | Common Stock | 348942 | $0.00 | 0 | I | See Footnote<sup>(4)</sup> |
| Series B-1 Preferred Stock | <sup>(1)</sup> | 2026-02-04 |  | C<sup>(1)</sup> |  |  | 282317 | <sup>(1)</sup> | <sup>(1)</sup> | Common Stock | 37855 | $0.00 | 0 | I | See Footnote<sup>(2)</sup> |
| Series B-1 Preferred Stock | <sup>(1)</sup> | 2026-02-04 |  | C<sup>(1)</sup> |  |  | 282317 | <sup>(1)</sup> | <sup>(1)</sup> | Common Stock | 37855 | $0.00 | 0 | I | See Footnote<sup>(3)</sup> |
| Series B-1 Preferred Stock | <sup>(1)</sup> | 2026-02-04 |  | C<sup>(1)</sup> |  |  | 282317 | <sup>(1)</sup> | <sup>(1)</sup> | Common Stock | 37855 | $0.00 | 0 | I | See Footnote<sup>(4)</sup> |
| Series B-1 Preferred Stock | <sup>(1)</sup> | 2026-02-04 |  | C<sup>(1)</sup> |  |  | 3048192 | <sup>(1)</sup> | <sup>(1)</sup> | Common Stock | 408725 | $0.00 | 0 | I | See Footnote<sup>(5)</sup> |
| Series C Preferred Stock | <sup>(1)</sup> | 2026-02-04 |  | C<sup>(1)</sup> |  |  | 12123 | <sup>(1)</sup> | <sup>(1)</sup> | Common Stock | 1626 | $0.00 | 0 | I | See Footnote<sup>(3)</sup> |
| Series C Preferred Stock | <sup>(1)</sup> | 2026-02-04 |  | C<sup>(1)</sup> |  |  | 6878 | <sup>(1)</sup> | <sup>(1)</sup> | Common Stock | 922 | $0.00 | 0 | I | See Footnote<sup>(4)</sup> |
| Series C-1 Preferred Stock | <sup>(1)</sup> | 2026-02-04 |  | C<sup>(1)</sup> |  |  | 501219 | <sup>(1)</sup> | <sup>(1)</sup> | Common Stock | 67207 | $0.00 | 0 | I | See Footnote<sup>(3)</sup> |
| Series C-1 Preferred Stock | <sup>(1)</sup> | 2026-02-04 |  | C<sup>(1)</sup> |  |  | 284392 | <sup>(1)</sup> | <sup>(1)</sup> | Common Stock | 38133 | $0.00 | 0 | I | See Footnote<sup>(4)</sup> |
| Series D Preferred Stock | <sup>(1)</sup> | 2026-02-04 |  | C<sup>(1)</sup> |  |  | 1711025 | <sup>(1)</sup> | <sup>(1)</sup> | Common Stock | 229428 | $0.00 | 0 | I | See Footnote<sup>(2)</sup> |
| Series D Preferred Stock | <sup>(1)</sup> | 2026-02-04 |  | C<sup>(1)</sup> |  |  | 3422051 | <sup>(1)</sup> | <sup>(1)</sup> | Common Stock | 458855 | $0.00 | 0 | I | See Footnote<sup>(3)</sup> |
| Warrants | $43.59 |  |  |  |  |  |  | 2025-02-14 | 2030-02-14 | Common Stock | 17092 |  | 17092 | I | See Footnote<sup>(2)</sup> |
| Warrants | $43.59 |  |  |  |  |  |  | 2025-02-14 | 2030-02-14 | Common Stock | 34185 |  | 34185 | I | See Footnote<sup>(3)</sup> |

---

### Footnotes:

(1) Immediately prior to the closing of the Issuer's initial public offering of its Common Stock, each share of Series A Preferred Stock, Series A-1 Preferred Stock, Series B-1 Preferred Stock, Series C Preferred Stock, Series C-1 Preferred Stock and Series D Preferred Stock automatically converted into approximately 0.1340878 shares of Common Stock and has no expiration date.

(2) The shares are held of record by Foresite Capital Fund IV, L.P. ("Fund IV"). Foresite Capital Management IV, LLC ("FCM IV") is the general partner of Fund IV and may be deemed to have sole voting and dispositive power over such shares. James B. Tananbaum ("Tananbaum"), the managing member of FCM IV, may be deemed to have sole voting and dispositive power over such shares. Each of the Reporting Persons disclaims the existence of a "group", as defined in Rule 13d-5 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and, other than Fund IV, disclaims beneficial ownership of the shares held by Fund IV, except to the extent of such person's pecuniary interest in such securities.

(3) The shares are held of record by Foresite Capital Fund V, L.P. ("Fund V"). Foresite Capital Management V, LLC ("FCM V") is the general partner of Fund V and may be deemed to have sole voting and dispositive power over such shares. James B. Tananbaum ("Tananbaum"), the managing member of FCM V, may be deemed to have sole voting and dispositive power over such shares. Each of the Reporting Persons disclaims the existence of a "group", as defined in Rule 13d-5 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and, other than Fund V, disclaims beneficial ownership of the shares held by Fund V, except to the extent of such person's pecuniary interest in such securities.

(4) The shares are held of record by Foresite Capital Opportunity Fund V, L.P. ("Opportunity Fund V"). Foresite Capital Opportunity Management V, LLC ("FCOM V") is the general partner of Opportunity Fund V and may be deemed to have sole voting and dispositive power over such shares. Tananbaum, the managing member of FCOM V, may be deemed to have sole voting and dispositive power over such shares. Each of the Reporting Persons disclaims the existence of a "group", as defined in Rule 13d-5 of the Exchange Act, and, other than Opportunity Fund V, disclaims beneficial ownership of the shares held by Opportunity Fund V, except to the extent of such person's pecuniary interest in such securities.

(5) The shares are held of record by Foresite Capital VI-A, LLC ("Fund VI-A"). Foresite Capital VI-A Management, LLC ("FC VI-A Management") is the general partner of Fund VI-A and may be deemed to have sole voting and dispositive power over such shares. Tananbaum, the managing member of FC VI-A Management, may be deemed to have sole voting and dispositive power over such shares. Each of the Reporting Persons disclaims the existence of a "group", as defined in Rule 13d-5 of the Exchange Act, and, other than Fund VI-A, disclaims beneficial ownership of the shares held by Fund VI-A, except to the extent of such person's pecuniary interest in such securities.

**Signature:** FORESITE CAPITAL MANAGEMENT IV, LLC, By: /s/ James B. Tananbaum, Managing Member  
**Date:** 2026-02-06

**Signature:** FORESITE CAPITAL FUND IV, L.P., By: Foresite Capital Management IV, LLC, Its: General Partner, By: /s/ James B. Tananbaum, Managing Member  
**Date:** 2026-02-06

**Signature:** FORESITE CAPITAL MANAGEMENT V, LLC, By: /s/ James B. Tananbaum, Managing Member  
**Date:** 2026-02-06

**Signature:** FORESITE CAPITAL FUND V, L.P., By: Foresite Capital Management V, LLC, Its: General Partner, By: /s/ James B. Tananbaum, Managing Member  
**Date:** 2026-02-06

**Signature:** FORESITE CAPITAL OPPORTUNITY MANAGEMENT V, LLC, By: /s/ James B. Tananbaum, Managing Member  
**Date:** 2026-02-06

**Signature:** FORESITE CAPITAL OPPORTUNITY FUND V, L.P., By: Foresite Capital Opportunity Management V, LLC, Its: General Partner, By: /s/ James B. Tananbaum, Managing Member  
**Date:** 2026-02-06

**Signature:** FORESITE CAPITAL VI-A MANAGEMENT, LLC, By: /s/ James B. Tananbaum, Managing Member  
**Date:** 2026-02-06

**Signature:** FORESITE CAPITAL VI-A, LLC, By: Foresite Capital VI-A Management, LLC, Its: Managing Member, By: /s/ James B. Tananbaum, Managing Member  
**Date:** 2026-02-06

### Remarks:

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