Transaction · 0002070849-26-000067

Lynch Thomas P.

Lynch Thomas P., SR, reported a transaction classified as exercise at BillionToOne, Inc. involving 3969.000000 shares for an estimated $45841.95. Reported holdings after the transaction were 11031.000000 shares. The stored filing text includes a detected 10b5-1 reference.

exerciseSEC transaction code MSR
BLLNBillionToOne, Inc.
Trade date
Sep 08, 2026
Filing date
Sep 10, 2026
View on SEC Insider profile
Disclosed value-$45.8kShares × reported price
Shares traded3.96k$11.55 per share
Holdings after11.0kDirect
% of reported position tradedUnavailableThis security and ownership context
How reported position traded is calculated

Not calculated for derivative securities.

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 -5.2%1w ago -6.3%1d ago +0.9%
Returns since7d +12.3%30d -0.4%90d180d1y

Transaction facts

Stored Form 4 columns with their raw values

Derivative
Type
exercise
Code M
Identifier
0002070849-26-000067
Stock Option (right to buy)
Transaction date
Sep 08, 2026
Filed Sep 10, 2026, 11:44 PM · 2d delay
Shares
3,969 sh
$11.55 per share
Estimated value
-$45.8k
Computed from shares × price
Holdings after
11,031 sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Derivative Transaction Direct Ownership Large Holdings Reduction 10b5-1 Detected
Filing-only score

-16 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 = 2

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

    is_derivative = true

    Derivative exercise rows are less discretionary than open-market purchases.
  • tenb5_1_detected-10 points

    is_10b5_1 = true

    Stored filing content includes detected 10b5-1 language.
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

See Remarks

Officer YesDirector No10% NoOther No
Footnotes & amended
  1. F1

    The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 8, 2026.

  2. F2

    The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $98.340 to $99.230 per share, inclusive. The holder undertakes to pro…

  3. F3

    The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $99.585 to $100.565 per share, inclusive. The holder undertakes to pr…

  4. F4

    The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $100.620 to $100.9125 per share, inclusive. The holder undertakes to…

  5. F5

    The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $98.340 to $99.195 per share, inclusive. The holder undertakes to pro…

  6. F6

    The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $100.720 to $100.9025 per share, inclusive. The holder undertakes to…

  7. F7

    The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $98.830 to $99.825 per share, inclusive. The holder undertakes to pro…

  8. F8

    The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $99.830 to $100.790 per share, inclusive. The holder undertakes to pr…

  9. F9

    The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $100.890 to $101.870 per share, inclusive. The holder undertakes to p…

  10. F10

    The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $99.670 to $100.550 per share, inclusive. The holder undertakes to pr…

  11. F11

    The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $100.725 to $101.650 per share, inclusive. The holder undertakes to p…

  12. F12

    The options are fully vested and exercisable. The terms of the underlying option grant are as previously reported on the Reporting Person's Form 3 filed on November 5, 2025.

Original filing · 0002070849-26-000067
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