SEC Form 4 · accession 0001104659-26-103217

BillionToOne, Inc. · BLLN

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

Krishna Kittu Kolluri

Director

Period of report

Aug 26, 2026

Accepted (ET)

Aug 28, 2026 · 4:20 pm EDT

Rule 10b5-1 plan

box not checked

Issuer CIK

0002070849

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Class A Common Stock^F2	Aug 26, 2026	J	129,780	$0.00	D	908,459	I	See Footnote
Class A Common Stock^F4	Aug 26, 2026	J	7,980	$0.00	A	7,980	I	See Footnote
Class A Common Stock^F4	Aug 26, 2026	J	7,980	$0.00	D	0	I	See Footnote
Class A Common Stock^F7	Aug 26, 2026	J	24,222	$0.00	D	169,550	I	See Footnote
Class A Common Stock^F9	Aug 26, 2026	J	2,405	$0.00	A	2,405	I	See Footnote
Class A Common Stock^F9	Aug 26, 2026	J	2,405	$0.00	D	0	I	See Footnote
Class A Common Stock^F12	Aug 26, 2026	J	271,028	$0.00	D	1,897,202	I	See Footnote
Class A Common Stock^F14	Aug 26, 2026	J	38,106	$0.00	A	38,106	I	See Footnote
Class A Common Stock^F14	Aug 26, 2026	J	38,106	$0.00	D	0	I	See Footnote
Class A Common Stock^F17	Aug 26, 2026	J	10,921	$0.00	D	76,441	I	See Footnote
Class A Common Stock^F18	Aug 26, 2026	J	719	$0.00	A	2,157	I	See Footnote
Class A Common Stock^F19	Aug 26, 2026	J	719	$0.00	A	2,157	I	See Footnote
Class A Common Stock^F21	Aug 26, 2026	J	5,761	$0.00	A	35,285	I	See Footnote
Class A Common Stock^F21	Aug 26, 2026	J	1,666	$0.00	A	36,951	I	See Footnote
Class A Common Stock^F21	Aug 26, 2026	J	15,244	$0.00	A	52,195	I	See Footnote
Class A Common Stock^F21	Aug 26, 2026	J	5,644	$0.00	A	57,839	I	See Footnote

Table II — derivative securities

No Table II lines on this filing.

Explanation of responses

F1Represents a pro-rata, in-kind distribution by Neotribe Ignite Fund I, L.P. ("NTIF I") to its partners, for no additional consideration.
F10Represents a pro-rata, in-kind distribution by NTP SPV I to its members and assignees, for no additional consideration.
F11Represents a pro-rata, in-kind distribution by NeoTribe Ventures I, L.P. ("NTV I") to its partners, for no additional consideration.
F12The reported security is directly held by NTV I, for itself. NeoTribe Partners I, LLC ("NTP I") is the general partner of NTV I. Kolluri is the managing member of NTP I and therefore may be deemed to hold voting and dispositive power over the shares held by NTV I. Kolluri disclaims beneficial ownership of the shares held by NTV I except to the extent of his pecuniary interest therein.
F13The shares were obtained pursuant to a pro-rata, in-kind distribution from NTV I, for no additional consideration.
F14The reported security is directly held by NTP I. Kolluri is the managing member of NTP I and therefore may be deemed to have voting and dispositive power over the shares held by NTP I. Kolluri disclaims beneficial ownership of the shares held by NTP I except to the extent of his pecuniary interest therein.
F15Represents a pro-rata, in-kind distribution by NTP I to its members and assignees, for no additional consideration.
F16Represents a pro-rata, in-kind distribution by NeoTribe Associates I, L.P. ("NTA I") to its partners, for no additional consideration.
F17The reported security is directly held by NTV I, as nominee for NTA I. NTP I is the general partner of NTA I. Kolluri is the managing member of NTP I and therefore may be deemed to hold voting and dispositive power over the shares held by NTA I. Kolluri disclaims beneficial ownership of the shares held by NTA I except to the extent of his pecuniary interest therein.
F18The reported security is directly held by Ishaan S. Kolluri GST Exempt Trust under the Kolluri 2012 Trust Dtd 11/16/2012, of which Kolluri is a trustee and therefore may be deemed to hold voting and dispositive power over these shares. Kolluri disclaims beneficial ownership of these shares.
F19The reported security is directly held by Raina V. Kolluri GST Exempt Trust under the Kolluri 2012 Trust Dtd 11/16/2012, of which Kolluri is a trustee and therefore may be deemed to hold voting and dispositive power over these shares. Kolluri disclaims beneficial ownership of these shares.
F2The reported security is directly held by NTIF I. Neotribe Ignite Partners I, LLC ("NTIP I") is the general partner of NTIF I. Krishna Kittu Kolluri ("Kolluri") is the managing member of NTIP I and therefore may be deemed to have voting and dispositive power over the shares held by NTIF I. Kolluri disclaims beneficial ownership of the shares held by NTIF I except to the extent of his pecuniary interest therein.
F20The shares were obtained pursuant to a pro-rata, in-kind distribution from NTIP I, for no additional consideration.
F21The reported security is directly held by Kolluri Living Trust dated 11/05/1999, of which Kolluri is a trustee and therefore may be deemed to hold voting and dispositive power over these shares. Kolluri disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.
F22The shares were obtained pursuant to a pro-rata, in-kind distribution from NTP SPV I, for no additional consideration.
F23The shares were obtained pursuant to a pro-rata, in-kind distribution from NTP I, for no additional consideration.
F24The shares were obtained pursuant to a pro-rata, in-kind distribution from NTA I, for no additional consideration.
F3The shares were obtained pursuant to a pro-rata, in-kind distribution from NTIF I, for no additional consideration.
F4The reported security is directly held by NTIP I. Kolluri is the managing member of NTIP I and therefore may be deemed to have voting and dispositive power over the shares held by NTIP I. Kolluri disclaims beneficial ownership of the shares held by NTIP I except to the extent of his pecuniary interest therein.
F5Represents a pro-rata, in-kind distribution by NTIP I to its members and assignees, for no additional consideration.
F6Represents a pro-rata, in-kind distribution by Neotribe SPV I BTO, LLC ("NT SPV I") to its members, for no additional consideration.
F7The reported security is directly held by NT SPV I. Neotribe Partners SPV I BTO, LLC ("NTP SPV I") is the managing member of NT SPV I. Kolluri is the managing member of NTP SPV I and therefore may be deemed to have voting and dispositive power over the shares held by NT SPV I. Kolluri disclaims beneficial ownership of the shares held by NT SPV I except to the extent of his pecuniary interest therein.
F8The shares were obtained pursuant to a pro-rata, in-kind distribution from NT SPV I, for no additional consideration.
F9The reported security is directly held by NTP SPV I. Kolluri is the managing member of NTP SPV I and therefore may be deemed to have voting and dispositive power over the shares held by NTP SPV I. Kolluri disclaims beneficial ownership of the shares held by NTP SPV I except to the extent of his pecuniary interest therein.