Transaction · 0002087127-26-000009

Tsao David

Tsao David, CTO, reported a transaction classified as gift at BillionToOne, Inc. involving 20000.000000 shares for an estimated $0.00. Reported holdings after the transaction were 1000.000000 shares. A 10b5-1 reference was not detected in the stored filing text.

giftSEC transaction code GCTO
BLLNBillionToOne, Inc.
Trade date
Sep 08, 2026
Filing date
Sep 09, 2026
View on SEC Insider profile
Estimated value$0Shares × reported price
Shares traded20.0k$0.00 per share
Holdings after1.00kDirect
% of reported position tradedUnavailableThis security and ownership context
How reported position traded is calculated

Calculated only for code-P purchases and code-S sales.

Row-level estimate for this security and ownership context, not the insider’s complete portfolio. Joint ownership, other transactions in the filing, amendments and footnotes can affect interpretation.

BLLN price since this filing

Daily closing prices, with the filing date and available return windows
BLLN · Daily closing priceLoading daily prices…
Filing dateReturn windows appear as prices become available.
Pre-filing1mo ago -5.8%1w ago -6.9%1d ago +0.2%
Returns since7d +4.5%30d -3.8%90d180d1y

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
gift
Code G
Identifier
0002087127-26-000009
Class A Common Stock
Transaction date
Sep 08, 2026
Filed Sep 09, 2026, 01:55 AM · 1d delay
Shares
20,000 sh
$0.00 per share
Estimated value
$0
Computed from shares × price
Holdings after
1,000 sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Direct Ownership Large Holdings Reduction
Filing-only score

-6 points

Compact filing score computed from stored Form 4 facts. Version v1.

Mixed or weak signal

This filing has a negative filing-only score. It may be less informative as an insider-activity signal and needs extra context.

How this score is calculated
  • direct_ownership+6 points

    direct_or_indirect_ownership = D

    Direct ownership reports the insider's personal stake.
  • timely_filing+4 points

    reporting_delay_days = 1

    Filing reported within two business days of the transaction.
  • gift-16 points

    transaction_code = G

    Gift transactions are not market activity.
Read the scoring methodology

Signed filing-only points, not a probability or expected return. Version v1.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

Chief Technology Officer

Officer YesDirector Yes10% NoOther No
Footnotes & amended
  1. F1

    These shares of Class B common stock were converted at a 1:1 ratio for shares of Class A common stock at the option of the holder.

  2. F2

    Each share of Class B Common Stock is convertible into one share of Class A common stock at the option of the holder. Class B common stock will convert automatically on a one-for-one basis into shares…

Original filing · 0002087127-26-000009
Related transactions

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