# EDGAR Filing Document

**Accession Number:** 0001955982
**File Stem:** 0001213900-25-098418
**Filing Date:** 2025-10
**Character Count:** 37578
**Document Hash:** dfcabe96a4bf16c7963ccb43dfd2a590
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001213900-25-098418.hdr.sgml**: 20251014

**ACCESSION NUMBER**: 0001213900-25-098418

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13G

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20251014

**DATE AS OF CHANGE**: 20251014

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Invivyd, Inc.
- **CENTRAL INDEX KEY:** 0001832038
- **STANDARD INDUSTRIAL CLASSIFICATION:** BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 851403134
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-92804
- **FILM NUMBER:** 251389988

**BUSINESS ADDRESS:**
- **STREET 1:** 209 CHURCH STREET
- **CITY:** NEW HAVEN
- **STATE:** CT
- **ZIP:** 06510
- **BUSINESS PHONE:** (781) 819-0080

**MAIL ADDRESS:**
- **STREET 1:** 209 CHURCH STREET
- **CITY:** NEW HAVEN
- **STATE:** CT
- **ZIP:** 06510

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Adagio Therapeutics, Inc.
- **DATE OF NAME CHANGE:** 20201112
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Soleus Private Equity Fund III, L.P.
- **CENTRAL INDEX KEY:** 0001955982

**ORGANIZATION NAME:**
- **EIN:** 880637097
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

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

**BUSINESS ADDRESS:**
- **STREET 1:** 104 FIELD POINT ROAD, 2ND FLOOR
- **CITY:** GREENWICH
- **STATE:** CT
- **ZIP:** 06830
- **BUSINESS PHONE:** 475-208-3178

**MAIL ADDRESS:**
- **STREET 1:** 104 FIELD POINT ROAD, 2ND FLOOR
- **CITY:** GREENWICH
- **STATE:** CT
- **ZIP:** 06830

## Ex-99.A

**Exhibit 99.A**

EXHIBIT A

JOINT FILING AGREEMENT

Soleus Private Equity GP III, LLC, a Delaware limited liability company, Soleus Private Equity Fund III, L.P., a Delaware limited partnership, Soleus PE GP III, LLC, a Delaware limited liability company, Soleus Capital Master Fund, L.P., a Cayman Islands exempted limited partnership, Soleus Capital, LLC, a Delaware limited liability company, Soleus Capital Group, LLC, a Delaware limited liability company, Soleus Capital Management, L.P., a Delaware limited partnership, Soleus GP, LLC, a Delaware limited liability company, and Guy Levy, an individual, hereby agree to file jointly the statement on Schedule 13G to which this Joint Filing Agreement is attached, and any amendments thereto which may be deemed necessary, pursuant to Regulation 13D-G under the Securities Exchange Act of 1934, as amended.

It is understood and agreed that each of the parties hereto is responsible for the timely filing of such statement and any amendments thereto, and for the completeness and accuracy of the information concerning such party contained therein, but such party is not responsible for the completeness or accuracy of information concerning the other party unless such party knows or has reason to believe that such information is inaccurate.

It is understood and agreed that a copy of this Agreement shall be attached as an exhibit to the statement on Schedule 13G, and any amendments hereto, filed on behalf of each of the parties hereto.

---

| | | |
|:---|:---|:---|
| **Date**: October 14, 2025 | Soleus Private Equity Fund III, L.P. | Soleus Private Equity Fund III, L.P. |
|  | By: | Soleus Private Equity GP III, LLC, its General Partner |
|  | By: | Soleus PE GP III, LLC, its Manager |
|  | By: | /s/ Guy Levy |
|  | Name: | Guy Levy |
|  | Title: | Managing Member |
| **Date**: October 14, 2025 | Soleus Private Equity GP III, LLC | Soleus Private Equity GP III, LLC |
|  | By: | Soleus PE GP III, LLC, its Manager |
|  | By: | /s/ Guy Levy |
|  | Name: | Guy Levy |
|  | Title: | Managing Member |
| **Date**: October 14, 2025 | Soleus PE GP III, LLC | Soleus PE GP III, LLC |
|  | By: | /s/ Guy Levy |
|  | Name: | Guy Levy |
|  | Title: | Managing Member |
| **Date**: October 14, 2025 | Soleus Capital Master Fund, L.P. | Soleus Capital Master Fund, L.P. |
|  | By: | Soleus Capital, LLC, its General Partner |
|  | By: | Soleus Capital Group, LLC, its Managing Manager |
|  | By: | /s/ Guy Levy |
|  | Name: | Guy Levy |
|  | Title: | Managing Member |

---

---

| | | |
|:---|:---|:---|
| **Date**: October 14, 2025 | Soleus Capital, LLC | Soleus Capital, LLC |
|  | By: | Soleus Capital Group, LLC, its Managing Manager |
|  | By: | /s/ Guy Levy |
|  | Name: | Guy Levy |
|  | Title: | Managing Member |

---

---

| | | |
|:---|:---|:---|
| **Date**: October 14, 2025 | Soleus Capital Group, LLC | Soleus Capital Group, LLC |
|  | By: | /s/ Guy Levy |
|  | Name: | Guy Levy |
|  | Title: | Managing Member |
| **Date**: October 14, 2025 | Soleus Capital Management, L.P. | Soleus Capital Management, L.P. |
|  | By: | Soleus GP, LLC, its General Partner |
|  | By: | /s/ Guy Levy |
|  | Name: | Guy Levy |
|  | Title: | Managing Member |
| **Date**: October 14, 2025 | Soleus GP, LLC | Soleus GP, LLC |
|  | By: | /s/ Guy Levy |
|  | Name: | Guy Levy |
|  | Title: | Managing Member |
| **Date**: October 14, 2025 | /s/ Guy Levy | /s/ Guy Levy |
|  | Name: | Guy Levy |

---

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

## SCHEDULE 13G

### Under the Securities Exchange Act of 1934

**Issuer:** INVIVYD, INC.

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

**CUSIP Number:** 00534A102

**Date of Event Which Requires Filing of this Statement:** 10/10/2025

**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>Soleus Private Equity Fund III, L.P. | Names of Reporting Persons<br>Soleus Private Equity Fund III, L.P. |
|:---|:---|:---|:---|
| 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>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>2857000.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>2857000.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>2857000.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>2857000.00 |
| 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>1.3% | Percent of Class Represented by Amount in Row (9)<br>1.3% |
| 12. | Type of Reporting Person (See Instructions)<br>PN | Type of Reporting Person (See Instructions)<br>PN |

**Comment for Type of Reporting Person:** (1) The shares reported in the table above are held directly by Soleus Private Equity Fund III, L.P. ("Soleus PE"). Soleus Private Equity GP III, LLC ("Soleus PE GP") is the sole general partner of Soleus PE, Soleus PE GP III, LLC is the sole manager of Soleus PE GP, Soleus Capital Management, L.P. ("SCM") is the investment manager for Soleus PE and for Soleus Capital Master Fund, L.P. ("Master Fund"), and Soleus GP, LLC is the sole general partner of SCM. Guy Levy is the sole managing member of each of Soleus PE GP III, LLC and of Soleus GP, LLC. Each of Mr. Levy, Soleus PE GP III, LLC, Soleus PE GP, SCM and Soleus GP, LLC disclaims beneficial ownership of these shares held by Soleus PE other than for the purpose of determining their obligations under Section 13(d) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and the filing of this report shall not be deemed an admission that any of the foregoing persons is the beneficial owner of such shares for any other purpose.

(2) The percentage set forth in row 11 is calculated based upon 214,409,450 shares of the common stock of Invivyd, Inc. (the "Issuer") outstanding as of September 22, 2025, as set forth in the Issuer's Registration Statement on Form S-3 that was filed with the Securities and Exchange Commission on October 2, 2025 (the "Form S-3").

---

| 1. | Names of Reporting Persons<br>Soleus Private Equity GP III, LLC | Names of Reporting Persons<br>Soleus Private Equity GP III, LLC |
|:---|:---|:---|:---|
| 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>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>2857000.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>2857000.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>2857000.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>2857000.00 |
| 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>1.3% | Percent of Class Represented by Amount in Row (9)<br>1.3% |
| 12. | Type of Reporting Person (See Instructions)<br>OO | Type of Reporting Person (See Instructions)<br>OO |

**Comment for Type of Reporting Person:** (1) The shares reported in the table above are held directly by Soleus PE. Soleus PE GP is the sole general partner of Soleus PE, Soleus PE GP III, LLC is the sole manager of Soleus PE GP, SCM is the investment manager for Soleus PE and for Master Fund, and Soleus GP, LLC is the sole general partner of SCM. Guy Levy is the sole managing member of each of Soleus PE GP III, LLC and of Soleus GP, LLC. Each of Mr. Levy, Soleus PE GP III, LLC, Soleus PE GP, SCM and Soleus GP, LLC disclaims beneficial ownership of these shares held by Soleus PE other than for the purpose of determining their obligations under Section 13(d) of the Exchange Act, and the filing of this report shall not be deemed an admission that any of the foregoing persons is the beneficial owner of such shares for any other purpose.

(2) The percentage set forth in row 11 is calculated based upon 214,409,450 shares of common stock of the Issuer outstanding as of September 22, 2025, as set forth in the Form S-3.

---

| 1. | Names of Reporting Persons<br>Soleus PE GP III, LLC | Names of Reporting Persons<br>Soleus PE GP III, LLC |
|:---|:---|:---|:---|
| 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>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>2857000.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>2857000.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>2857000.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>2857000.00 |
| 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>1.3% | Percent of Class Represented by Amount in Row (9)<br>1.3% |
| 12. | Type of Reporting Person (See Instructions)<br>OO | Type of Reporting Person (See Instructions)<br>OO |

**Comment for Type of Reporting Person:** (1) The shares reported in the table above are held directly by Soleus PE. Soleus PE GP is the sole general partner of Soleus PE, Soleus PE GP III, LLC is the sole manager of Soleus PE GP, SCM is the investment manager for Soleus PE and for Master Fund, and Soleus GP, LLC is the sole general partner of SCM. Guy Levy is the sole managing member of each of Soleus PE GP III, LLC and of Soleus GP, LLC. Each of Mr. Levy, Soleus PE GP III, LLC, Soleus PE GP, SCM and Soleus GP, LLC disclaims beneficial ownership of these shares held by Soleus PE other than for the purpose of determining their obligations under Section 13(d) of the Exchange Act, and the filing of this report shall not be deemed an admission that any of the foregoing persons is the beneficial owner of such shares for any other purpose.

(2) The percentage set forth in row 11 is calculated based upon 214,409,450 shares of common stock of the Issuer outstanding as of September 22, 2025, as set forth in the Form S-3.

---

| 1. | Names of Reporting Persons<br>Soleus Capital Master Fund, L.P. | Names of Reporting Persons<br>Soleus Capital Master Fund, L.P. |
|:---|:---|:---|:---|
| 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>E9 | Citizenship or Place of Organization<br>E9 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>7993000.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>7993000.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>7993000.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>7993000.00 |
| 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>3.7% | Percent of Class Represented by Amount in Row (9)<br>3.7% |
| 12. | Type of Reporting Person (See Instructions)<br>FI | Type of Reporting Person (See Instructions)<br>FI |

**Comment for Type of Reporting Person:** (1) The shares reported in the table above are held directly by Master Fund. Soleus Capital, LLC is the sole general partner of Master Fund, Soleus Capital Group, LLC ("SCG") is the sole managing member of Soleus Capital, LLC, SCM is the investment manager for Soleus PE and for Master Fund, and Soleus GP, LLC is the sole general partner of SCM. Guy Levy is the sole managing member of each of SCG and of Soleus GP, LLC. Each of SCG, Soleus Capital, LLC, SCM, Soleus GP, LLC and Mr. Levy disclaims beneficial ownership of these shares held by Master Fund other than for the purpose of determining their obligations under Section 13(d) of the Exchange Act, and the filing of this report shall not be deemed an admission that any of the foregoing persons is the beneficial owner of such shares for any other purpose.

(2) The percentage set forth in row 11 is calculated based upon 214,409,450 shares of common stock of the Issuer outstanding as of September 22, 2025, as set forth in the form S-3.

---

| 1. | Names of Reporting Persons<br>Soleus Capital, LLC | Names of Reporting Persons<br>Soleus Capital, LLC |
|:---|:---|:---|:---|
| 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>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>7993000.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>7993000.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>7993000.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>7993000.00 |
| 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>3.7% | Percent of Class Represented by Amount in Row (9)<br>3.7% |
| 12. | Type of Reporting Person (See Instructions)<br>OO | Type of Reporting Person (See Instructions)<br>OO |

**Comment for Type of Reporting Person:** (1) The shares reported in the table above are held directly by Master Fund. Soleus Capital, LLC is the sole general partner of Master Fund, SCG is the sole managing member of Soleus Capital, LLC, SCM is the investment manager for Soleus PE and for Master Fund, and Soleus GP, LLC is the sole general partner of SCM. Guy Levy is the sole managing member of each of SCG and of Soleus GP, LLC. Each of SCG, Soleus Capital, LLC, SCM, Soleus GP, LLC and Mr. Levy disclaims beneficial ownership of these shares held by Master Fund other than for the purpose of determining their obligations under Section 13(d) of the Exchange Act, and the filing of this report shall not be deemed an admission that any of the foregoing persons is the beneficial owner of such shares for any other purpose.

(2) The percentage set forth in row 11 is calculated based upon 214,409,450 shares of common stock of the Issuer outstanding as of September 22, 2025, as set forth in the Form S-3.

---

| 1. | Names of Reporting Persons<br>Soleus Capital Group, LLC | Names of Reporting Persons<br>Soleus Capital Group, LLC |
|:---|:---|:---|:---|
| 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>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>7993000.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>7993000.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>7993000.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>7993000.00 |
| 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>3.7% | Percent of Class Represented by Amount in Row (9)<br>3.7% |
| 12. | Type of Reporting Person (See Instructions)<br>OO | Type of Reporting Person (See Instructions)<br>OO |

**Comment for Type of Reporting Person:** (1) The shares reported in the table above are held directly by Master Fund. Soleus Capital, LLC is the sole general partner of Master Fund, SCG is the sole managing member of Soleus Capital, LLC, SCM is the investment manager for Soleus PE and for Master Fund, and Soleus GP, LLC is the sole general partner of SCM. Guy Levy is the sole managing member of each of SCG and of Soleus GP, LLC. Each of SCG, Soleus Capital, LLC, SCM, Soleus GP, LLC and Mr. Levy disclaims beneficial ownership of these shares held by Master Fund other than for the purpose of determining their obligations under Section 13(d) of the Exchange Act, and the filing of this report shall not be deemed an admission that any of the foregoing persons is the beneficial owner of such shares for any other purpose.

(2) The percentage set forth in row 11 is calculated based upon 214,409,450 shares of common stock of the Issuer outstanding as of September 22, 2025, as set forth in the Form S-3.

---

| 1. | Names of Reporting Persons<br>Soleus Capital Management, L.P. | Names of Reporting Persons<br>Soleus Capital Management, L.P. |
|:---|:---|:---|:---|
| 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>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>10850000.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>10850000.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>10850000.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>10850000.00 |
| 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>5.1% | Percent of Class Represented by Amount in Row (9)<br>5.1% |
| 12. | Type of Reporting Person (See Instructions)<br>PN | Type of Reporting Person (See Instructions)<br>PN |

**Comment for Type of Reporting Person:** (1) The shares reported in the table above are held directly by Soleus PE and by Master Fund. Soleus PE GP is the sole general partner of Soleus PE, Soleus PE GP III, LLC is the sole manager of Soleus PE GP, SCM is the investment manager for Soleus PE, and Soleus GP, LLC is the sole general partner of SCM. Soleus Capital, LLC is the sole general partner of Master Fund, SCG is the sole managing member of Soleus Capital, LLC, SCM is the investment manager for Master Fund, and Soleus GP, LLC is the sole general partner of SCM. Guy Levy is the sole managing member of each of Soleus PE GP III, LLC, SCG and Soleus GP, LLC. Each of Soleus PE GP, Soleus PE GP III, LLC, Soleus Capital, LLC, SCG, SCM, Soleus GP, LLC and Mr. Levy disclaims beneficial ownership of these shares held directly by Soleus PE and Master Fund other than for the purpose of determining their obligations under Section 13(d) of the Exchange Act, and the filing of this report shall not be deemed an admission that any of the foregoing persons is the beneficial owner of such shares for any other purpose.

(2) The percentage set forth in row 11 is calculated based upon 214,409,450 shares of common stock of the Issuer outstanding as of September 22, 2025, as set forth in the Form S-3.

---

| 1. | Names of Reporting Persons<br>Soleus GP, LLC | Names of Reporting Persons<br>Soleus GP, LLC |
|:---|:---|:---|:---|
| 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>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>10850000.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>10850000.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>10850000.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>10850000.00 |
| 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>5.1% | Percent of Class Represented by Amount in Row (9)<br>5.1% |
| 12. | Type of Reporting Person (See Instructions)<br>OO | Type of Reporting Person (See Instructions)<br>OO |

**Comment for Type of Reporting Person:** (1) The shares reported in the table above are held directly by Soleus PE and by Master Fund. Soleus PE GP is the sole general partner of Soleus PE, Soleus PE GP III, LLC is the sole manager of Soleus PE GP, SSCM is the investment manager for Soleus PE, and Soleus GP, LLC is the sole general partner of SCM. Soleus Capital, LLC is the sole general partner of Master Fund, SCG is the sole managing member of Soleus Capital, LLC, SCM is the investment manager for Master Fund, and Soleus GP, LLC is the sole general partner of SCM. Guy Levy is the sole managing member of each of Soleus PE GP III, LLC, SCG and Soleus GP, LLC. Each of Soleus PE GP, Soleus PE GP III, LLC, Soleus Capital, LLC, SCG, SCM, Soleus GP, LLC and Mr. Levy disclaims beneficial ownership of these shares held directly by Soleus PE and Master Fund other than for the purpose of determining their obligations under Section 13(d) of the Exchange Act, and the filing of this report shall not be deemed an admission that any of the foregoing persons is the beneficial owner of such shares for any other purpose.

(2) The percentage set forth in row 11 is calculated based upon 214,409,450 shares of common stock of the Issuer outstanding as of September 22, 2025, as set forth in the Form S-3.

---

| 1. | Names of Reporting Persons<br>Guy Levy | Names of Reporting Persons<br>Guy Levy |
|:---|:---|:---|:---|
| 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>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>10850000.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>10850000.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>10850000.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>10850000.00 |
| 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>5.1% | Percent of Class Represented by Amount in Row (9)<br>5.1% |
| 12. | Type of Reporting Person (See Instructions)<br>IN | Type of Reporting Person (See Instructions)<br>IN |

**Comment for Type of Reporting Person:** (1) The shares reported in the table above are held directly by Soleus PE and by Master Fund. Soleus PE GP is the sole general partner of Soleus PE, Soleus PE GP III, LLC is the sole manager of Soleus PE GP, SCM is the investment manager for Soleus PE, and Soleus GP, LLC is the sole general partner of SCM. Soleus Capital, LLC is the sole general partner of Master Fund, SCG is the sole managing member of Soleus Capital, LLC, SCM is the investment manager for Master Fund, and Soleus GP, LLC is the sole general partner of SCM. Guy Levy is the sole managing member of each of Soleus PE GP III, LLC, SCG and Soleus GP, LLC. Each of Soleus PE GP, Soleus PE GP III, LLC, Soleus Capital, LLC, SCG, SCM, Soleus GP, LLC and Mr. Levy disclaims beneficial ownership of these shares held directly by Soleus PE and Master Fund other than for the purpose of determining their obligations under Section 13(d) of the Exchange Act, and the filing of this report shall not be deemed an admission that any of the foregoing persons is the beneficial owner of such shares for any other purpose.

(2) The percentage set forth in row 11 is calculated based upon 214,409,450 shares of common stock of the Issuer outstanding as of September 22, 2025, as set forth in the Form S-3.

---

**Item 1(a). Name of Issuer:**
INVIVYD, INC.

**Item 1(b). Address of Issuer's Principal Executive Offices:**
209 Church Street, New Haven, CT 06510

**Item 2(a). Name of Person Filing:**
Soleus Private Equity GP III, LLC
Soleus Private Equity Fund III, L.P.
Soleus PE GP III, LLC
Soleus Capital Master Fund, L.P.
Soleus Capital, LLC
Soleus Capital Group, LLC
Soleus Capital Management, L.P.
Soleus GP, LLC Guy Levy

**Item 2(b). Address of Principal Business Office:**
Soleus Private Equity GP III, LLC, 100 Field Point Road, Suite 200, Greenwich, CT 06830
Soleus Private Equity Fund III, L.P., 100 Field Point Road, Suite 200, Greenwich, CT 06830
Soleus PE GP III, LLC, 100 Field Point Road, Suite 200, Greenwich, CT 06830
Soleus Capital Master Fund, L.P., 100 Field Point Road, Suite 200, Greenwich, CT 06830
Soleus Capital, LLC, 100 Field Point Road, Suite 200, Greenwich, CT 06830
Soleus Capital Group, LLC, 100 Field Point Road, Suite 200, Greenwich, CT 06830
Soleus Capital Management, L.P., 100 Field Point Road, Suite 200, Greenwich, CT 06830
Soleus GP, LLC, 100 Field Point Road, Suite 200, Greenwich, CT 06830
Guy Levy, c/o Soleus Capital Management, L.P. 100 Field Point Road, Suite 200, Greenwich, CT 06830

**Item 2(c). Citizenship:**
Soleus Private Equity GP III, LLC - Delaware
Soleus Private Equity Fund III, L.P. - Delaware
Soleus PE GP III, LLC - Delaware
Soleus Capital Master Fund, L.P. - Cayman Islands
Soleus Capital, LLC - Delaware
Soleus Capital Group, LLC - Delaware
Soleus Capital Management, L.P. - Delaware
Soleus GP, LLC - Delaware
Guy Levy - United States

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

**Item 2(e). CUSIP Number:**
00534A102

**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:**

The information in rows 5 through 9 and 11 on the cover pages to this Schedule 13G, including the footnotes thereto, is hereby incorporated by reference.
Soleus Private Equity GP III, LLC - 2,857,000
Soleus Private Equity Fund III, L.P. - 2,857,000
Soleus PE GP III, LLC - 2,857,000
Soleus Capital Master Fund, L.P. - 7,993,000
Soleus Capital, LLC - 7,993,000
Soleus Capital Group, LLC - 7,993,000
Soleus Capital Management, L.P. - 10,850,000
Soleus GP, LLC - 10,850,000
Guy Levy - 10,850,000

**(b) Percent of class:**

Soleus Private Equity GP III, LLC - 1.3%
Soleus Private Equity Fund III, L.P. - 1.3%
Soleus PE GP III, LLC - 1.3%
Soleus Capital Master Fund, L.P. - 3.7%
Soleus Capital, LLC - 3.7%
Soleus Capital Group, LLC - 3.7%
Soleus Capital Management, L.P. - 5.1%
Soleus GP, LLC - 5.1%
Guy Levy - 5.1%

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

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

0

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

Soleus Private Equity GP III, LLC - 2,857,000
Soleus Private Equity Fund III, L.P. - 2,857,000
Soleus PE GP III, LLC - 2,857,000
Soleus Capital Master Fund, L.P. - 7,993,000
Soleus Capital, LLC - 7,993,000
Soleus Capital Group, LLC - 7,993,000
Soleus Capital Management, L.P. - 10,850,000
Soleus GP, LLC - 10,850,000
Guy Levy - 10,850,000

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

0

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

Soleus Private Equity GP III, LLC - 2,857,000
Soleus Private Equity Fund III, L.P. - 2,857,000
Soleus PE GP III, LLC - 2,857,000
Soleus Capital Master Fund, L.P. - 7,993,000
Soleus Capital, LLC - 7,993,000
Soleus Capital Group, LLC - 7,993,000
Soleus Capital Management, L.P. - 10,850,000
Soleus GP, LLC - 10,850,000
Guy Levy - 10,850,000

**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**

Not Applicable

**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.

**Soleus Private Equity Fund III, L.P.**

**Date:** 10/14/2025

**By:** /s/ Guy Levy

**Name & Title:** Guy Levy/Managing Member

**Soleus Private Equity GP III, LLC**

**Date:** 10/14/2025

**By:** /s/ Guy Levy

**Name & Title:** Guy Levy/Managing Member

**Soleus PE GP III, LLC**

**Date:** 10/14/2025

**By:** /s/ Guy Levy

**Name & Title:** Guy Levy/Managing Member

**Soleus Capital Master Fund, L.P.**

**Date:** 10/14/2025

**By:** /s/ Guy Levy

**Name & Title:** Guy Levy/Managing Member

**Soleus Capital, LLC**

**Date:** 10/14/2025

**By:** /s/ Guy Levy

**Name & Title:** Guy Levy/Managing Member

**Soleus Capital Group, LLC**

**Date:** 10/14/2025

**By:** /s/ Guy Levy

**Name & Title:** Guy Levy/Managing Member

**Soleus Capital Management, L.P.**

**Date:** 10/14/2025

**By:** /s/ Guy Levy

**Name & Title:** Guy Levy/Managing Member

**Soleus GP, LLC**

**Date:** 10/14/2025

**By:** /s/ Guy Levy

**Name & Title:** Guy Levy/Managing Member

**Guy Levy**

**Date:** 10/14/2025

**By:** /s/ Guy Levy

**Name & Title:** Guy Levy