Transaction · 0002070849-26-000072
BLLNBillionToOne, Inc.
Atay Oguzhan
Atay Oguzhan, CHAIR, reported an open-market or private sale at BillionToOne, Inc. involving 1961.000000 shares for an estimated $179571.12. Reported holdings after the transaction were 14706.000000 shares. The stored filing text includes a detected 10b5-1 reference.
Open-market sellSEC transaction code SCHAIR
- Trade date
- Oct 12, 2026
- Filing date
- Oct 14, 2026
How reported position traded is calculated
Shares sold ÷ (holdings after + shares sold). Estimated position before: 16,667 shares.
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 windowsBLLN · Daily closing priceLoading daily prices…
Filing dateReturn windows appear as prices become available.
Pre-filing1mo ago +0.9%1w ago +11.4%1d ago +0.2%
Returns since7d30d90d180d1y
Transaction facts
Stored Form 4 columns with their raw values
- Type
- Sell Code S
- Identifier
- 0002070849-26-000072 Class A Common Stock
- Transaction date
- Oct 12, 2026 Filed Oct 14, 2026, 10:10 PM · 2d delay
- Shares
- 1,961 sh $91.57 per share
- Estimated value
- -$179k Computed from shares × price
- Holdings after
- 14,706 sh Direct
Filing signal explanations
Badges describe filing facts only — not predictions.
Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Cluster Selling Direct Ownership Repeat Seller 10b5-1 Detected
Filing-only score
0 points
Compact filing score computed from stored Form 4 facts. Version v1.
Neutral filing signal
This filing is broadly neutral on the filing-only scale. The Form 4 facts do not strongly tilt positive or negative.
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. - tenb5_1_detected-10 points
is_10b5_1 = true
Stored filing content includes detected 10b5-1 language.
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
Chairman and CEO
Officer YesDirector Yes10% NoOther No
Footnotes & amended
- 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 5, 2026.
- F2
The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $91.250 to $92.170 per share, inclusive. The holder undertakes to pro…
- F3
The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $92.2596 to $93.255 per share, inclusive. The holder undertakes to pr…
- F4
The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $93.260 to $94.225 per share, inclusive. The holder undertakes to pro…
- F5
The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $94.265 to $95.205 per share, inclusive. The holder undertakes to pro…
- F6
The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $95.945 to $96.765 per share, inclusive. The holder undertakes to pro…
- F7
The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person's spouse on June 7, 2026.
- F8
Represents shares held by the Reporting Person's spouse.
- F9
The options are fully vested and exercisable.
Related transactions
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