# EDGAR Filing Document

**Accession Number:** 0001696926
**File Stem:** 0001104659-26-015079
**Filing Date:** 2026-2
**Character Count:** 28788
**Document Hash:** 7a6bedcb58123de381d17ab452ba7723
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-26-015079.hdr.sgml**: 20260213

**ACCESSION NUMBER**: 0001104659-26-015079

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13G

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20260213

**DATE AS OF CHANGE**: 20260213

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** BillionToOne, Inc.
- **CENTRAL INDEX KEY:** 0002070849
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-MEDICAL LABORATORIES [8071]
- **ORGANIZATION NAME:** 08 Industrial Applications and Services
- **EIN:** 811082020
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-95426
- **FILM NUMBER:** 26631540

**BUSINESS ADDRESS:**
- **STREET 1:** 1035 O'BRIEN DRIVE
- **CITY:** MENLO PARK
- **STATE:** CA
- **BUSINESS PHONE:** 650-460-2551

**MAIL ADDRESS:**
- **STREET 1:** 1035 O'BRIEN DRIVE
- **CITY:** MENLO PARK
- **STATE:** CA
- **ZIP:** 94025
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** NeoTribe Ventures I, L.P.
- **CENTRAL INDEX KEY:** 0001696926

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

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

**BUSINESS ADDRESS:**
- **STREET 1:** 3340 HILLVIEW AVENUE
- **CITY:** PALO ALTO
- **STATE:** CA
- **ZIP:** 94304
- **BUSINESS PHONE:** (786) 505-4888

**MAIL ADDRESS:**
- **STREET 1:** 3340 HILLVIEW AVENUE
- **CITY:** PALO ALTO
- **STATE:** CA
- **ZIP:** 94304

## Ex-99.A

**<u>exhibit A</u>**

<u>Joint Filing Agreement</u>

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.

Date: February 13, 2026

---

| | | | |
|:---|:---|:---|:---|
| **NEOTRIBE VENTURES I, L.P.** | **NEOTRIBE VENTURES I, L.P.** | **Neotribe** **SPV I BTO, LLC** | **Neotribe** **SPV I BTO, LLC** |
| By: | NeoTribe Partners I, LLC, | By: | Neotribe Partners SPV I BTO, LLC, |
|  | its General Partner |  | its Managing Member |
| By: | /s/ Krishna Kolluri | By: | /s/ Krishna Kolluri |
|  | Krishna Kolluri, |  | Krishna Kolluri, |
|  | Managing Member |  | Managing Member |
| **NEOTRIBE ASSOCIATES I, L.P.** | **NEOTRIBE ASSOCIATES I, L.P.** | **Neotribe Partners SPV I BTO, LLC** | **Neotribe Partners SPV I BTO, LLC** |
| By: | NeoTribe Partners I, LLC, | By: | /s/ Krishna Kolluri |
|  | its General Partner |  | Krishna Kolluri, |
|  |  |  | Managing Member |
| By: | /s/ Krishna Kolluri |  |  |
|  | Krishna Kolluri, | /s/ Krishna Kolluri | /s/ Krishna Kolluri |
|  | Managing Member | **Krishna KITTU Kolluri** | **Krishna KITTU Kolluri** |
| **NeoTribe Partners I, LLC** | **NeoTribe Partners I, LLC** |  |  |
| By: | /s/ Krishna Kolluri |  |  |
|  | Krishna Kolluri, |  |  |
|  | Managing Member |  |  |
| **Neotribe Ignite Fund I, L.P.** | **Neotribe Ignite Fund I, L.P.** |  |  |
| By: | Neotribe Ignite Partners I, LLC, |  |  |
|  | its General Partner |  |  |
| By: | /s/ Krishna Kolluri |  |  |
|  | Krishna Kolluri, |  |  |
|  | Managing Member |  |  |
| **Neotribe Ignite Partners I, LLC** | **Neotribe Ignite Partners I, LLC** |  |  |
| By: | /s/ Krishna Kolluri |  |  |
|  | Krishna Kolluri, |  |  |
|  | Managing Member |  |  |

---

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

## SCHEDULE 13G

### Under the Securities Exchange Act of 1934

**Issuer:** BillionToOne, Inc.

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

**CUSIP Number:** 090168105

**Date of Event Which Requires Filing of this Statement:** 11/07/2025

**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>NeoTribe Ventures I, L.P. ("NTV I") | Names of Reporting Persons<br>NeoTribe Ventures I, L.P. ("NTV 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>2710286.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>2710286.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>0.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>2710286.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>2710286.00 |
| 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>6.6% | Percent of Class Represented by Amount in Row (9)<br>6.6% |
| 12. | Type of Reporting Person (See Instructions)<br>PN | Type of Reporting Person (See Instructions)<br>PN |

**Comment for Type of Reporting Person:** Note to Rows 5 and 7:  NeoTribe Partners I, LLC ("NTP I"), the general partner of NTV I, may be deemed to have sole voting and dispositive power over these shares, and Kolluri, the managing member of NTP I, may be deemed to have sole voting and dispositive power over these shares.

Note to Row 6: See response to Row 5.

Note to Row 8: See response to Row 7.

Note to Row 11: This percentage is calculated based upon 41,216,110 shares of Class A Common Stock, par value $0.00001 per share ("Common Stock") outstanding as of December 5, 2025, as set forth in the quarterly report on Form 10-Q of BillionToOne, Inc. (the "Issuer") for the quarter ended September 30, 2025, filed with the United States Securities and Exchange Commission (the "Commission") on December 10, 2025 (the "Form 10-Q").

---

| 1. | Names of Reporting Persons<br>NeoTribe Associates I, L.P. ("NTA I") | Names of Reporting Persons<br>NeoTribe Associates I, L.P. ("NTA 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>109204.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>109204.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>0.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>109204.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>109204.00 |
| 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>0.3% | Percent of Class Represented by Amount in Row (9)<br>0.3% |
| 12. | Type of Reporting Person (See Instructions)<br>PN | Type of Reporting Person (See Instructions)<br>PN |

**Comment for Type of Reporting Person:** Note to Rows 5 and 7: All shares are held of record by NTV I as nominee for NTA I. NTP I, the general partner of NTA I, may be deemed to have sole voting and dispositive power over these shares, and Kolluri, the managing member of NTP I, may be deemed to have sole voting and dispositive power over these shares.

Note to Row 6: See response to Row 5.

Note to Row 8: See response to Row 7.

Note to Row 11: This percentage is calculated based upon 41,216,110 shares of Common Stock outstanding as of December 5, 2025, as set forth in the Form 10-Q.

---

| 1. | Names of Reporting Persons<br>NeoTribe Partners I, LLC ("NTP I") | Names of Reporting Persons<br>NeoTribe Partners I, LLC ("NTP 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>2819490.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>2819490.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>0.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>2819490.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>2819490.00 |
| 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>6.8% | Percent of Class Represented by Amount in Row (9)<br>6.8% |
| 12. | Type of Reporting Person (See Instructions)<br>OO | Type of Reporting Person (See Instructions)<br>OO |

**Comment for Type of Reporting Person:** Note to Rows 5 and 7: Consists of 2,710,286 shares held of record by NTV I for itself and 109,204 shares held of record by NTV I as nominee for NTA I.  NTP I, the general partner of NTV I and NTA I, may be deemed to have sole voting and dispositive power over these shares, and Kolluri, the managing member of NTP I, may be deemed to have sole voting and dispositive power over these shares.

Note to Row 6: See response to Row 5.

Note to Row 8: See response to Row 7.

Note to Row 11: This percentage is calculated based upon 41,216,110 shares of Common Stock outstanding as of December 5, 2025, as set forth in the Form 10-Q.

---

| 1. | Names of Reporting Persons<br>Neotribe Ignite Fund I, L.P. ("NTIF I") | Names of Reporting Persons<br>Neotribe Ignite Fund I, L.P. ("NTIF 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>1297799.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>1297799.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>0.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>1297799.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>1297799.00 |
| 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>3.1% | Percent of Class Represented by Amount in Row (9)<br>3.1% |
| 12. | Type of Reporting Person (See Instructions)<br>PN | Type of Reporting Person (See Instructions)<br>PN |

**Comment for Type of Reporting Person:** Note to Rows 5 and 7: Neotribe Ignite Partners I, LLC ("NTIP I"), the general partner of NTIF I, may be deemed to have sole voting and dispositive power over these shares, and Kolluri, the managing member of NTIP I, may be deemed to have sole voting and dispositive power over these shares.

Note to Row 6: See response to Row 5.

Note to Row 8: See response to Row 7.

Note to Row 11: This percentage is calculated based upon 41,216,110 shares of Common Stock outstanding as of December 5, 2025, as set forth in the Form 10-Q.

---

| 1. | Names of Reporting Persons<br>Neotribe Ignite Partners I, LLC ("NTIP I") | Names of Reporting Persons<br>Neotribe Ignite Partners I, LLC ("NTIP 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>1297799.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>1297799.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>0.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>1297799.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>1297799.00 |
| 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>3.1% | Percent of Class Represented by Amount in Row (9)<br>3.1% |
| 12. | Type of Reporting Person (See Instructions)<br>OO | Type of Reporting Person (See Instructions)<br>OO |

**Comment for Type of Reporting Person:** Note to Rows 5 and 7: Shares held of record by NTIF I. NTIP I, the general partner of NTIF I, may be deemed to have sole voting and dispositive power over these shares, and Kolluri, the managing member of NTIF I, may be deemed to have sole voting and dispositive power over these shares.

Note to Row 6: See response to Row 5.

Note to Row 8: See response to Row 7.

Note to Row 11: This percentage is calculated based upon 41,216,110 shares of Common Stock outstanding as of December 5, 2025, as set forth in the Form 10-Q.

---

| 1. | Names of Reporting Persons<br>Neotribe SPV I BTO, LLC ("NT SPV I") | Names of Reporting Persons<br>Neotribe SPV I BTO, LLC ("NT SPV 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>242216.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>242216.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>0.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>242216.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>242216.00 |
| 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>0.6% | Percent of Class Represented by Amount in Row (9)<br>0.6% |
| 12. | Type of Reporting Person (See Instructions)<br>OO | Type of Reporting Person (See Instructions)<br>OO |

**Comment for Type of Reporting Person:** Note to Rows 5 and 7: Neotribe Partners SPV I BTO, LLC ("NTP SPV I"), the managing member of NT SPV I, may be deemed to have sole voting and dispositive power over these shares, and Kolluri, the managing member of NTP SPV I, may be deemed to have sole voting and dispositive power over these shares.

Note to Row 6: See response to Row 5.

Note to Row 8: See response to Row 7.

Note to Row 11: This percentage is calculated based upon 41,216,110 shares of Common Stock outstanding as of December 5, 2025, as set forth in the Form 10-Q.

---

| 1. | Names of Reporting Persons<br>Neotribe Partners SPV I BTO, LLC ("NTP SPV I") | Names of Reporting Persons<br>Neotribe Partners SPV I BTO, LLC ("NTP SPV 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>242216.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>242216.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>0.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>242216.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>242216.00 |
| 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>0.6% | Percent of Class Represented by Amount in Row (9)<br>0.6% |
| 12. | Type of Reporting Person (See Instructions)<br>OO | Type of Reporting Person (See Instructions)<br>OO |

**Comment for Type of Reporting Person:** Note to Row 5: Shares held of record by NT SPV I. NTP SPV I, the managing member of NT SPV I, may be deemed to have sole voting and dispositive power over these shares, and Kolluri, the managing member of NT SPV I, may be deemed to have sole voting and dispositive power over these shares.

Note to Row 6: See response to Row 5.

Note to Row 8: See response to Row 7.

Note to Row 11: This percentage is calculated based upon 41,216,110 shares of Common Stock outstanding as of December 5, 2025, as set forth in the Form 10-Q.

---

| 1. | Names of Reporting Persons<br>Krishna Kittu Kolluri ("Kolluri") | Names of Reporting Persons<br>Krishna Kittu Kolluri ("Kolluri") |
|:---|:---|:---|:---|
| 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>4359505.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>0.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>4359505.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>0.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>4359505.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>4359505.00 |
| 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>10.6% | Percent of Class Represented by Amount in Row (9)<br>10.6% |
| 12. | Type of Reporting Person (See Instructions)<br>IN | Type of Reporting Person (See Instructions)<br>IN |

**Comment for Type of Reporting Person:** Note to Rows 5 and 7: Consists of 2,710,286 shares held of record by NTV I for itself, 109,204 shares held of record by NTV I as nominee for NTA I, 1,297,799 shares held of record by NTIF I and 242,216 shares held of record by NT SPV I. NTP I, the general partner of NTV I and NTA I, may be deemed to have sole voting and dispositive power over the shares held of record by NTV I for itself and as nominee for NTA I. NTIP I, the general partner of NTIF I, may be deemed to have sole voting and dispositive power over the shares held of record by NTIF I. NTP SPV I, the managing member of NT SPV I, may be deemed to have sole voting and dispositive power over the shares held of record by NT SPV I. Kolluri, a director of the Issuer and the managing member of NTP I, NTIP I and NTP SPV I may be deemed to have sole voting and dispositive power over the shares held of record by NTV I for itself and as nominee for NTA I, NTIF I and NT SPV I, respectively.

Note to Row 6: See response to Row 5.

Note to Row 8: See response to Row 7.

Note to Row 11: This percentage is calculated based upon 41,216,110 shares of Common Stock outstanding as of December 5, 2025, as set forth in the Form 10-Q.

---

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

**Item 1(b). Address of Issuer's Principal Executive Offices:**
1035 O'Brien Drive, Menlo Park, CA 94025

**Item 2(a). Name of Person Filing:**
This joint statement on Schedule 13G is being filed by NeoTribe Ventures I, L.P. ("NTV I"), NeoTribe Associates I, L.P. ("NTA I"), NeoTribe Partners I, LLC ("NTP I"), Neotribe Ignite Fund I, L.P. ("NTIF I"), Neotribe Ignite Partners I, LLC ("NTIP I"), Neotribe SPV I BTO, LLC ("NT SPV I"), Neotribe Partners SPV I BTO, LLC ("NTP SPV I") and Krishna Kolluri ("Kolluri").  The foregoing entities and individuals are collectively referred to as the "Reporting Persons."

**Item 2(b). Address of Principal Business Office:**
c/o NeoTribe Management Company, LLC
1300 El Camino Real, Suite 100
Menlo Park, CA 94025

**Item 2(c). Citizenship:**
See Row 4 of cover page for each Reporting Person.

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

**Item 2(e). CUSIP Number:**
090168105

**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 cover page for each Reporting Person.

**(b) Percent of class:**

See Row 11 of 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 cover page for each Reporting Person.

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

See Row 6 of cover page for each Reporting Person.

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

See Row 7 of cover page for each Reporting Person.

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

See Row 8 of cover page for each Reporting Person.

**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 agreements of NTV I, NTA I and NTIF I, and the limited liability company agreement of NTP I, NTIP I, NT SPV I and NTP SPV I, the 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, shares of the Issuer directly or indirectly owned by each such entity of which they are a partner or member.

**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.

**NeoTribe Ventures I, L.P. ("NTV I")**

**Date:** 02/13/2026

**By:** /s/ Krishna Kolluri

**Name & Title:** Managing Member of NeoTribe Partners I, LLC, the General Partner of NeoTribe Ventures I, L.P.

**NeoTribe Associates I, L.P. ("NTA I")**

**Date:** 02/13/2026

**By:** /s/ Krishna Kolluri

**Name & Title:** Managing Member of NeoTribe Partners I, LLC, the General Partner of NeoTribe Associates I, L.P.

**NeoTribe Partners I, LLC ("NTP I")**

**Date:** 02/13/2026

**By:** /s/ Krishna Kolluri

**Name & Title:** Managing Member

**Neotribe Ignite Fund I, L.P. ("NTIF I")**

**Date:** 02/13/2026

**By:** /s/ Krishna Kolluri

**Name & Title:** Managing Member of Neotribe Ignite Partners I, LLC, the General Partner of Neotribe Ignite Fund I, L.P.

**Neotribe Ignite Partners I, LLC ("NTIP I")**

**Date:** 02/13/2026

**By:** /s/ Krishna Kolluri

**Name & Title:** Managing Member

**Neotribe SPV I BTO, LLC ("NT SPV I")**

**Date:** 02/13/2026

**By:** /s/ Krishna Kolluri

**Name & Title:** Managing Member of Neotribe Partners SPV I BTO, LLC, the Managing Member of Neotribe SPV I BTO, LLC

**Neotribe Partners SPV I BTO, LLC ("NTP SPV I")**

**Date:** 02/13/2026

**By:** /s/ Krishna Kolluri

**Name & Title:** Managing Member

**Krishna Kittu Kolluri ("Kolluri")**

**Date:** 02/13/2026

**By:** /s/ Krishna Kolluri

**Name & Title:** Krishna Kolluri