Oguzhan Atay sold $3.3M of BillionToOne stock

By AlphaYouPublished Nov 5, 2026Form 4

Stocks in this disclosure

Reported activity

Atay Oguzhan

Reporting filer

Oguzhan Atay reported selling 30,335 shares of BillionToOne, Inc. for about $3.3M ($109.93 a share on average). Form 4 filed Nov 5, 2026 lists 18 entries.

See the price move since this trade →

Disclosed: Nov 5, 2026

Reported details

18 entries

All validated entries in this disclosure
Security	Owner	Date	Code	Action	Quantity	Price	Following holdings	Reporting delay	Filed terms and references
Class A Common Stock	Atay Oguzhan	2026-11-02	M	Exercise or conversion	16667	2.80	16,667	3 days	Filed terms security Title: Class A Common Stock transaction Date: 2026-11-02 transaction Form Type: 4 transaction Code: M equity Swap Involved: 0 id: F1 transaction Shares: 16667 transaction Price Per Share: 2.80 transaction Acquired Disposed Code: A shares Owned Following Transaction: 16667 direct Or Indirect Ownership: D
Class A Common Stock	Atay Oguzhan	2026-11-02	M	Exercise or conversion	8334	2.80	25,001	3 days	Filed terms security Title: Class A Common Stock transaction Date: 2026-11-02 transaction Form Type: 4 transaction Code: M equity Swap Involved: 0 id: F1 transaction Shares: 8334 transaction Price Per Share: 2.80 transaction Acquired Disposed Code: A shares Owned Following Transaction: 25001 direct Or Indirect Ownership: D
Class A Common Stock	Atay Oguzhan	2026-11-02	S	Sale	1482	107.3142	23,519	3 days	Filed terms security Title: Class A Common Stock transaction Date: 2026-11-02 transaction Form Type: 4 transaction Code: S equity Swap Involved: 0 id: F1 transaction Shares: 1482 transaction Price Per Share: 107.3142 id: F2 transaction Acquired Disposed Code: D shares Owned Following Transaction: 23519 direct Or Indirect Ownership: D
Class A Common Stock	Atay Oguzhan	2026-11-02	S	Sale	4009	108.2464	19,510	3 days	Filed terms security Title: Class A Common Stock transaction Date: 2026-11-02 transaction Form Type: 4 transaction Code: S equity Swap Involved: 0 id: F1 transaction Shares: 4009 transaction Price Per Share: 108.2464 id: F3 transaction Acquired Disposed Code: D shares Owned Following Transaction: 19510 direct Or Indirect Ownership: D
Class A Common Stock	Atay Oguzhan	2026-11-02	S	Sale	5720	109.0791	13,790	3 days	Filed terms security Title: Class A Common Stock transaction Date: 2026-11-02 transaction Form Type: 4 transaction Code: S equity Swap Involved: 0 id: F1 transaction Shares: 5720 transaction Price Per Share: 109.0791 id: F4 transaction Acquired Disposed Code: D shares Owned Following Transaction: 13790 direct Or Indirect Ownership: D
Class A Common Stock	Atay Oguzhan	2026-11-02	S	Sale	3803	110.29	9,987	3 days	Filed terms security Title: Class A Common Stock transaction Date: 2026-11-02 transaction Form Type: 4 transaction Code: S equity Swap Involved: 0 id: F1 transaction Shares: 3803 transaction Price Per Share: 110.29 id: F5 transaction Acquired Disposed Code: D shares Owned Following Transaction: 9987 direct Or Indirect Ownership: D
Class A Common Stock	Atay Oguzhan	2026-11-02	S	Sale	1117	110.9784	8,870	3 days	Filed terms security Title: Class A Common Stock transaction Date: 2026-11-02 transaction Form Type: 4 transaction Code: S equity Swap Involved: 0 id: F1 transaction Shares: 1117 transaction Price Per Share: 110.9784 id: F6 transaction Acquired Disposed Code: D shares Owned Following Transaction: 8870 direct Or Indirect Ownership: D
Class A Common Stock	Atay Oguzhan	2026-11-02	S	Sale	536	112.4416	8,334	3 days	Filed terms security Title: Class A Common Stock transaction Date: 2026-11-02 transaction Form Type: 4 transaction Code: S equity Swap Involved: 0 id: F1 transaction Shares: 536 transaction Price Per Share: 112.4416 id: F7 transaction Acquired Disposed Code: D shares Owned Following Transaction: 8334 direct Or Indirect Ownership: D
Class A Common Stock	Atay Oguzhan	2026-11-02	S	Sale	974	107.3386	7,360	3 days	Filed terms security Title: Class A Common Stock transaction Date: 2026-11-02 transaction Form Type: 4 transaction Code: S equity Swap Involved: 0 id: F1 transaction Shares: 974 transaction Price Per Share: 107.3386 id: F8 transaction Acquired Disposed Code: D shares Owned Following Transaction: 7360 direct Or Indirect Ownership: D
Class A Common Stock	Atay Oguzhan	2026-11-02	S	Sale	2075	108.429	5,285	3 days	Filed terms security Title: Class A Common Stock transaction Date: 2026-11-02 transaction Form Type: 4 transaction Code: S equity Swap Involved: 0 id: F1 transaction Shares: 2075 transaction Price Per Share: 108.429 id: F9 transaction Acquired Disposed Code: D shares Owned Following Transaction: 5285 direct Or Indirect Ownership: D
Class A Common Stock	Atay Oguzhan	2026-11-02	S	Sale	2451	109.1145	2,834	3 days	Filed terms security Title: Class A Common Stock transaction Date: 2026-11-02 transaction Form Type: 4 transaction Code: S equity Swap Involved: 0 id: F1 transaction Shares: 2451 transaction Price Per Share: 109.1145 id: F10 transaction Acquired Disposed Code: D shares Owned Following Transaction: 2834 direct Or Indirect Ownership: D
Class A Common Stock	Atay Oguzhan	2026-11-02	S	Sale	2223	110.3508	611	3 days	Filed terms security Title: Class A Common Stock transaction Date: 2026-11-02 transaction Form Type: 4 transaction Code: S equity Swap Involved: 0 id: F1 transaction Shares: 2223 transaction Price Per Share: 110.3508 id: F11 transaction Acquired Disposed Code: D shares Owned Following Transaction: 611 direct Or Indirect Ownership: D
Class A Common Stock	Atay Oguzhan	2026-11-02	S	Sale	411	111.0265	200	3 days	Filed terms security Title: Class A Common Stock transaction Date: 2026-11-02 transaction Form Type: 4 transaction Code: S equity Swap Involved: 0 id: F1 transaction Shares: 411 transaction Price Per Share: 111.0265 id: F12 transaction Acquired Disposed Code: D shares Owned Following Transaction: 200 direct Or Indirect Ownership: D
Class A Common Stock	Atay Oguzhan	2026-11-02	S	Sale	200	112.39	0	3 days	Filed terms security Title: Class A Common Stock transaction Date: 2026-11-02 transaction Form Type: 4 transaction Code: S equity Swap Involved: 0 id: F1 transaction Shares: 200 transaction Price Per Share: 112.39 id: F13 transaction Acquired Disposed Code: D shares Owned Following Transaction: 0 direct Or Indirect Ownership: D
Class A Common Stock	Atay Oguzhan	2026-11-02	S	Sale	2667	113.17	143,834	3 days	Filed terms security Title: Class A Common Stock transaction Date: 2026-11-02 transaction Form Type: 4 transaction Code: S equity Swap Involved: 0 id: F14 transaction Shares: 2667 transaction Price Per Share: 113.17 transaction Acquired Disposed Code: D shares Owned Following Transaction: 143834 direct Or Indirect Ownership: I nature Of Ownership: By spouse id: F15
Class A Common Stock	Atay Oguzhan	2026-11-02	S	Sale	2667	113.17	141,167	3 days	Filed terms security Title: Class A Common Stock transaction Date: 2026-11-02 transaction Form Type: 4 transaction Code: S equity Swap Involved: 0 id: F14 transaction Shares: 2667 transaction Price Per Share: 113.17 transaction Acquired Disposed Code: D shares Owned Following Transaction: 141167 direct Or Indirect Ownership: I nature Of Ownership: By spouse id: F15
Stock Option (right to buy) (derivative)	Atay Oguzhan	2026-11-02	M	Exercise or conversion	16667	2.80	443,629	3 days	Filed terms security Title: Stock Option (right to buy) conversion Or Exercise Price: 2.80 transaction Date: 2026-11-02 transaction Form Type: 4 transaction Code: M equity Swap Involved: 0 transaction Shares: 16667 transaction Price Per Share: 2.80 transaction Acquired Disposed Code: D id: F16 expiration Date: 2031-06-07 underlying Security Title: Class A Common Stock underlying Security Shares: 16667 shares Owned Following Transaction: 443629 direct Or Indirect Ownership: D
Stock Option (right to buy) (derivative)	Atay Oguzhan	2026-11-02	M	Exercise or conversion	8334	2.80	435,295	3 days	Filed terms security Title: Stock Option (right to buy) conversion Or Exercise Price: 2.80 transaction Date: 2026-11-02 transaction Form Type: 4 transaction Code: M equity Swap Involved: 0 transaction Shares: 8334 transaction Price Per Share: 2.80 transaction Acquired Disposed Code: D id: F16 expiration Date: 2031-06-07 underlying Security Title: Class A Common Stock underlying Security Shares: 8334 shares Owned Following Transaction: 435295 direct Or Indirect Ownership: D

Class A Common Stock

Owner: Atay Oguzhan
Date: 2026-11-02
Code: M
Action: Exercise or conversion
Quantity: 16667
Price: 2.80
Following holdings: 16,667
Reporting delay: 3 days
Filed terms and references: Filed terms
security Title: Class A Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: M
equity Swap Involved: 0
id: F1
transaction Shares: 16667
transaction Price Per Share: 2.80
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 16667
direct Or Indirect Ownership: D

Class A Common Stock

Owner: Atay Oguzhan
Date: 2026-11-02
Code: M
Action: Exercise or conversion
Quantity: 8334
Price: 2.80
Following holdings: 25,001
Reporting delay: 3 days
Filed terms and references: Filed terms
security Title: Class A Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: M
equity Swap Involved: 0
id: F1
transaction Shares: 8334
transaction Price Per Share: 2.80
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 25001
direct Or Indirect Ownership: D

Class A Common Stock

Owner: Atay Oguzhan
Date: 2026-11-02
Code: S
Action: Sale
Quantity: 1482
Price: 107.3142
Following holdings: 23,519
Reporting delay: 3 days
Filed terms and references: Filed terms
security Title: Class A Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: S
equity Swap Involved: 0
id: F1
transaction Shares: 1482
transaction Price Per Share: 107.3142
id: F2
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 23519
direct Or Indirect Ownership: D

Class A Common Stock

Owner: Atay Oguzhan
Date: 2026-11-02
Code: S
Action: Sale
Quantity: 4009
Price: 108.2464
Following holdings: 19,510
Reporting delay: 3 days
Filed terms and references: Filed terms
security Title: Class A Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: S
equity Swap Involved: 0
id: F1
transaction Shares: 4009
transaction Price Per Share: 108.2464
id: F3
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 19510
direct Or Indirect Ownership: D

Class A Common Stock

Owner: Atay Oguzhan
Date: 2026-11-02
Code: S
Action: Sale
Quantity: 5720
Price: 109.0791
Following holdings: 13,790
Reporting delay: 3 days
Filed terms and references: Filed terms
security Title: Class A Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: S
equity Swap Involved: 0
id: F1
transaction Shares: 5720
transaction Price Per Share: 109.0791
id: F4
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 13790
direct Or Indirect Ownership: D

Class A Common Stock

Owner: Atay Oguzhan
Date: 2026-11-02
Code: S
Action: Sale
Quantity: 3803
Price: 110.29
Following holdings: 9,987
Reporting delay: 3 days
Filed terms and references: Filed terms
security Title: Class A Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: S
equity Swap Involved: 0
id: F1
transaction Shares: 3803
transaction Price Per Share: 110.29
id: F5
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 9987
direct Or Indirect Ownership: D

Class A Common Stock

Owner: Atay Oguzhan
Date: 2026-11-02
Code: S
Action: Sale
Quantity: 1117
Price: 110.9784
Following holdings: 8,870
Reporting delay: 3 days
Filed terms and references: Filed terms
security Title: Class A Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: S
equity Swap Involved: 0
id: F1
transaction Shares: 1117
transaction Price Per Share: 110.9784
id: F6
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 8870
direct Or Indirect Ownership: D

Class A Common Stock

Owner: Atay Oguzhan
Date: 2026-11-02
Code: S
Action: Sale
Quantity: 536
Price: 112.4416
Following holdings: 8,334
Reporting delay: 3 days
Filed terms and references: Filed terms
security Title: Class A Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: S
equity Swap Involved: 0
id: F1
transaction Shares: 536
transaction Price Per Share: 112.4416
id: F7
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 8334
direct Or Indirect Ownership: D

Class A Common Stock

Owner: Atay Oguzhan
Date: 2026-11-02
Code: S
Action: Sale
Quantity: 974
Price: 107.3386
Following holdings: 7,360
Reporting delay: 3 days
Filed terms and references: Filed terms
security Title: Class A Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: S
equity Swap Involved: 0
id: F1
transaction Shares: 974
transaction Price Per Share: 107.3386
id: F8
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 7360
direct Or Indirect Ownership: D

Class A Common Stock

Owner: Atay Oguzhan
Date: 2026-11-02
Code: S
Action: Sale
Quantity: 2075
Price: 108.429
Following holdings: 5,285
Reporting delay: 3 days
Filed terms and references: Filed terms
security Title: Class A Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: S
equity Swap Involved: 0
id: F1
transaction Shares: 2075
transaction Price Per Share: 108.429
id: F9
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 5285
direct Or Indirect Ownership: D

Class A Common Stock

Owner: Atay Oguzhan
Date: 2026-11-02
Code: S
Action: Sale
Quantity: 2451
Price: 109.1145
Following holdings: 2,834
Reporting delay: 3 days
Filed terms and references: Filed terms
security Title: Class A Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: S
equity Swap Involved: 0
id: F1
transaction Shares: 2451
transaction Price Per Share: 109.1145
id: F10
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 2834
direct Or Indirect Ownership: D

Class A Common Stock

Owner: Atay Oguzhan
Date: 2026-11-02
Code: S
Action: Sale
Quantity: 2223
Price: 110.3508
Following holdings: 611
Reporting delay: 3 days
Filed terms and references: Filed terms
security Title: Class A Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: S
equity Swap Involved: 0
id: F1
transaction Shares: 2223
transaction Price Per Share: 110.3508
id: F11
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 611
direct Or Indirect Ownership: D

Class A Common Stock

Owner: Atay Oguzhan
Date: 2026-11-02
Code: S
Action: Sale
Quantity: 411
Price: 111.0265
Following holdings: 200
Reporting delay: 3 days
Filed terms and references: Filed terms
security Title: Class A Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: S
equity Swap Involved: 0
id: F1
transaction Shares: 411
transaction Price Per Share: 111.0265
id: F12
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 200
direct Or Indirect Ownership: D

Class A Common Stock

Owner: Atay Oguzhan
Date: 2026-11-02
Code: S
Action: Sale
Quantity: 200
Price: 112.39
Following holdings: 0
Reporting delay: 3 days
Filed terms and references: Filed terms
security Title: Class A Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: S
equity Swap Involved: 0
id: F1
transaction Shares: 200
transaction Price Per Share: 112.39
id: F13
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 0
direct Or Indirect Ownership: D

Class A Common Stock

Owner: Atay Oguzhan
Date: 2026-11-02
Code: S
Action: Sale
Quantity: 2667
Price: 113.17
Following holdings: 143,834
Reporting delay: 3 days
Filed terms and references: Filed terms
security Title: Class A Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: S
equity Swap Involved: 0
id: F14
transaction Shares: 2667
transaction Price Per Share: 113.17
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 143834
direct Or Indirect Ownership: I
nature Of Ownership: By spouse
id: F15

Class A Common Stock

Owner: Atay Oguzhan
Date: 2026-11-02
Code: S
Action: Sale
Quantity: 2667
Price: 113.17
Following holdings: 141,167
Reporting delay: 3 days
Filed terms and references: Filed terms
security Title: Class A Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: S
equity Swap Involved: 0
id: F14
transaction Shares: 2667
transaction Price Per Share: 113.17
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 141167
direct Or Indirect Ownership: I
nature Of Ownership: By spouse
id: F15

Stock Option (right to buy) (derivative)

Owner: Atay Oguzhan
Date: 2026-11-02
Code: M
Action: Exercise or conversion
Quantity: 16667
Price: 2.80
Following holdings: 443,629
Reporting delay: 3 days
Filed terms and references: Filed terms
security Title: Stock Option (right to buy)
conversion Or Exercise Price: 2.80
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: M
equity Swap Involved: 0
transaction Shares: 16667
transaction Price Per Share: 2.80
transaction Acquired Disposed Code: D
id: F16
expiration Date: 2031-06-07
underlying Security Title: Class A Common Stock
underlying Security Shares: 16667
shares Owned Following Transaction: 443629
direct Or Indirect Ownership: D

Stock Option (right to buy) (derivative)

Owner: Atay Oguzhan
Date: 2026-11-02
Code: M
Action: Exercise or conversion
Quantity: 8334
Price: 2.80
Following holdings: 435,295
Reporting delay: 3 days
Filed terms and references: Filed terms
security Title: Stock Option (right to buy)
conversion Or Exercise Price: 2.80
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: M
equity Swap Involved: 0
transaction Shares: 8334
transaction Price Per Share: 2.80
transaction Acquired Disposed Code: D
id: F16
expiration Date: 2031-06-07
underlying Security Title: Class A Common Stock
underlying Security Shares: 8334
shares Owned Following Transaction: 435295
direct Or Indirect Ownership: D

Purchases, sales, grants and option exercises are different transactions. The reported code identifies the action; it does not establish a motive.

Filing context

Quantities and prices are shown in the units filed. No trade value is inferred from their product.
Atay Oguzhan: Chairman and CEO, Director.
The filing reports a Rule 10b5-1 trading plan.
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 $106.620 to $107.600 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
F3: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $107.635 to $108.630 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
F4: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $108.675 to $109.555 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
F5: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $109.760 to $110.7425 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
F6: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $110.780 to $111.650 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
F7: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $111.950 to $112.820 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
F8: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $106.700 to $107.660 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
F9: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $107.785 to $108.7772 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
F10: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $108.790 to $109.760 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
F11: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $109.800 to $110.790 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
F12: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $110.825 to $111.535 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
F13: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $111.950 to $112.830 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
F14: 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.
F15: Represents shares held by the Reporting Person's spouse.
F16: The options are fully vested and exercisable.

Original sources

SEC ownership filing

Prepared automatically from public filing data. Report a correction.

Security

Owner

Date

Code

Action

Quantity

Price

Following holdings

Reporting delay

Filed terms and references

Class A Common Stock

Atay Oguzhan

2026-11-02

Exercise or conversion

16667

2.80

16,667

3 days

Filed terms

security Title: Class A Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: M
equity Swap Involved: 0
id: F1
transaction Shares: 16667
transaction Price Per Share: 2.80
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 16667
direct Or Indirect Ownership: D

Class A Common Stock

Atay Oguzhan

2026-11-02

Exercise or conversion

8334

2.80

25,001

3 days

Filed terms

security Title: Class A Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: M
equity Swap Involved: 0
id: F1
transaction Shares: 8334
transaction Price Per Share: 2.80
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 25001
direct Or Indirect Ownership: D

Class A Common Stock

Atay Oguzhan

2026-11-02

Sale

1482

107.3142

23,519

3 days

Filed terms

security Title: Class A Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: S
equity Swap Involved: 0
id: F1
transaction Shares: 1482
transaction Price Per Share: 107.3142
id: F2
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 23519
direct Or Indirect Ownership: D

Class A Common Stock

Atay Oguzhan

2026-11-02

Sale

4009

108.2464

19,510

3 days

Filed terms

security Title: Class A Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: S
equity Swap Involved: 0
id: F1
transaction Shares: 4009
transaction Price Per Share: 108.2464
id: F3
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 19510
direct Or Indirect Ownership: D

Class A Common Stock

Atay Oguzhan

2026-11-02

Sale

5720

109.0791

13,790

3 days

Filed terms

security Title: Class A Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: S
equity Swap Involved: 0
id: F1
transaction Shares: 5720
transaction Price Per Share: 109.0791
id: F4
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 13790
direct Or Indirect Ownership: D

Class A Common Stock

Atay Oguzhan

2026-11-02

Sale

3803

110.29

9,987

3 days

Filed terms

security Title: Class A Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: S
equity Swap Involved: 0
id: F1
transaction Shares: 3803
transaction Price Per Share: 110.29
id: F5
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 9987
direct Or Indirect Ownership: D

Class A Common Stock

Atay Oguzhan

2026-11-02

Sale

1117

110.9784

8,870

3 days

Filed terms

security Title: Class A Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: S
equity Swap Involved: 0
id: F1
transaction Shares: 1117
transaction Price Per Share: 110.9784
id: F6
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 8870
direct Or Indirect Ownership: D

Class A Common Stock

Atay Oguzhan

2026-11-02

Sale

536

112.4416

8,334

3 days

Filed terms

security Title: Class A Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: S
equity Swap Involved: 0
id: F1
transaction Shares: 536
transaction Price Per Share: 112.4416
id: F7
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 8334
direct Or Indirect Ownership: D

Class A Common Stock

Atay Oguzhan

2026-11-02

Sale

974

107.3386

7,360

3 days

Filed terms

security Title: Class A Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: S
equity Swap Involved: 0
id: F1
transaction Shares: 974
transaction Price Per Share: 107.3386
id: F8
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 7360
direct Or Indirect Ownership: D

Class A Common Stock

Atay Oguzhan

2026-11-02

Sale

2075

108.429

5,285

3 days

Filed terms

security Title: Class A Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: S
equity Swap Involved: 0
id: F1
transaction Shares: 2075
transaction Price Per Share: 108.429
id: F9
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 5285
direct Or Indirect Ownership: D

Class A Common Stock

Atay Oguzhan

2026-11-02

Sale

2451

109.1145

2,834

3 days

Filed terms

security Title: Class A Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: S
equity Swap Involved: 0
id: F1
transaction Shares: 2451
transaction Price Per Share: 109.1145
id: F10
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 2834
direct Or Indirect Ownership: D

Class A Common Stock

Atay Oguzhan

2026-11-02

Sale

2223

110.3508

611

3 days

Filed terms

security Title: Class A Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: S
equity Swap Involved: 0
id: F1
transaction Shares: 2223
transaction Price Per Share: 110.3508
id: F11
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 611
direct Or Indirect Ownership: D

Class A Common Stock

Atay Oguzhan

2026-11-02

Sale

411

111.0265

200

3 days

Filed terms

security Title: Class A Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: S
equity Swap Involved: 0
id: F1
transaction Shares: 411
transaction Price Per Share: 111.0265
id: F12
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 200
direct Or Indirect Ownership: D

Class A Common Stock

Atay Oguzhan

2026-11-02

Sale

200

112.39

3 days

Filed terms

security Title: Class A Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: S
equity Swap Involved: 0
id: F1
transaction Shares: 200
transaction Price Per Share: 112.39
id: F13
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 0
direct Or Indirect Ownership: D

Class A Common Stock

Atay Oguzhan

2026-11-02

Sale

2667

113.17

143,834

3 days

Filed terms

security Title: Class A Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: S
equity Swap Involved: 0
id: F14
transaction Shares: 2667
transaction Price Per Share: 113.17
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 143834
direct Or Indirect Ownership: I
nature Of Ownership: By spouse
id: F15

Class A Common Stock

Atay Oguzhan

2026-11-02

Sale

2667

113.17

141,167

3 days

Filed terms

security Title: Class A Common Stock
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: S
equity Swap Involved: 0
id: F14
transaction Shares: 2667
transaction Price Per Share: 113.17
transaction Acquired Disposed Code: D
shares Owned Following Transaction: 141167
direct Or Indirect Ownership: I
nature Of Ownership: By spouse
id: F15

Stock Option (right to buy) (derivative)

Atay Oguzhan

2026-11-02

Exercise or conversion

16667

2.80

443,629

3 days

Filed terms

security Title: Stock Option (right to buy)
conversion Or Exercise Price: 2.80
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: M
equity Swap Involved: 0
transaction Shares: 16667
transaction Price Per Share: 2.80
transaction Acquired Disposed Code: D
id: F16
expiration Date: 2031-06-07
underlying Security Title: Class A Common Stock
underlying Security Shares: 16667
shares Owned Following Transaction: 443629
direct Or Indirect Ownership: D

Stock Option (right to buy) (derivative)

Atay Oguzhan

2026-11-02

Exercise or conversion

8334

2.80

435,295

3 days

Filed terms

security Title: Stock Option (right to buy)
conversion Or Exercise Price: 2.80
transaction Date: 2026-11-02
transaction Form Type: 4
transaction Code: M
equity Swap Involved: 0
transaction Shares: 8334
transaction Price Per Share: 2.80
transaction Acquired Disposed Code: D
id: F16
expiration Date: 2031-06-07
underlying Security Title: Class A Common Stock
underlying Security Shares: 8334
shares Owned Following Transaction: 435295
direct Or Indirect Ownership: D

Filing context

Quantities and prices are shown in the units filed. No trade value is inferred from their product.

Atay Oguzhan: Chairman and CEO, Director.

The filing reports a Rule 10b5-1 trading plan.

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 $106.620 to $107.600 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $107.635 to $108.630 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F4: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $108.675 to $109.555 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F5: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $109.760 to $110.7425 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F6: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $110.780 to $111.650 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F7: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $111.950 to $112.820 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F8: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $106.700 to $107.660 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F9: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $107.785 to $108.7772 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F10: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $108.790 to $109.760 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F11: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $109.800 to $110.790 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F12: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $110.825 to $111.535 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F13: The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $111.950 to $112.830 per share, inclusive. The holder undertakes to provide, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F14: 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.

F15: Represents shares held by the Reporting Person's spouse.

F16: The options are fully vested and exercisable.