Signature
/s/ Gladys Chang as Attorney-in-Fact
Issuer symbol
BUI
Transactions as of
30 Jan 2026
Net transactions value
+$7,970
Form type
4
Filing time
03 Feb 2026, 17:45:10 UTC
Previous filing
04 Feb 2025

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Sinclair Lindsay Victoria Portfolio Manager 50 HUDSON YARDS, NEW YORK /s/ Gladys Chang as Attorney-in-Fact 03 Feb 2026 0001980652

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction BUI Common Stock Options Exercise +201 201 30 Jan 2026 Direct F1, F2, F3
transaction BUI Common Stock Disposed to Issuer $5,530 -201 -100% $27.52 0 30 Jan 2026 Direct F1, F2, F3

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction BUI Phantom Shares Award $13,500 +491 $27.52 491 30 Jan 2026 Common Stock 491 Direct F1, F4
transaction BUI Phantom Shares Options Exercise -74 -33% 148 30 Jan 2026 Common Stock 74 Direct F1, F2
transaction BUI Phantom Shares Options Exercise -127 -50% 127 30 Jan 2026 Common Stock 127 Direct F1, F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.
F2 As previously reported on a Form 4 dated February 4, 2025, the Reporting Person was granted phantom shares on January 31, 2025 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.
F3 As previously reported on a Form 4 dated February 2, 2024, the Reporting Person was granted phantom shares on January 31, 2024 payable in cash on vesting, which occurs in equal installments on each of the first three anniversaries of the grant date.
F4 These phantom shares vest in equal installments on each of the first three anniversaries of the award.