WALL CHRISTOPHER K (SVP, CFO and Treasurer) exercised options at BLUELINX HOLDINGS INC.

Option exercise — a mechanical event triggered by vesting or expiry. Not a discretionary conviction trade.

M · 1 exercise

WALL CHRISTOPHER K

Filed: 6/9/2026ACC: 0001104659-26-071869

InsiderWALL CHRISTOPHER KCIK 1820194

→

IssuerBLUELINX HOLDINGS INC.CIK 1301787

Officer· SVP, CFO and Treasurer

Since May 2025

+13.93K

Net shares

Net buyer

$0.00

Total acquired

Open market trades

0B · 0S

Total transactions

16.50K acquired · 2.57K disposed

Non-Derivative Transactions2

Common Stock

Direct

M · Option Exercise

+1.78K

Price / share

—

Trade value

—

% of position

21.1%

6/6/2026

8.41K→10.19K

Common Stock

Direct

F · Tax Withholding

−792.00

Price / share

—

Trade value

—

% of position

7.8%

6/6/2026

10.19K→9.39K

Total

Net shares

+986.00

Net value

$0.00

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	6/6/2026	M · Option Exercise	+1.78K	—	—	21.1%	8.41K	10.19K
Common Stock Direct	6/6/2026	F · Tax Withholding	−792.00	—	—	7.8%	10.19K	9.39K
Total			+986.00		$0.00

Derivative Transactions4

Restricted Stock Units

Direct

A · Award

Converts to

Common Stock

7.36K shares

+7.36K

Strike price

Held after

7.36K

Exercisable

—

6/5/2026

Restricted Stock Units

Direct

A · Award

Converts to

Common Stock

1.84K shares

+1.84K

Strike price

Held after

1.84K

Exercisable

—

6/5/2026

Restricted Stock Units

Direct

A · Award

Converts to

Common Stock

5.52K shares

+5.52K

Strike price

Held after

5.52K

Exercisable

—

6/5/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

1.78K shares

−1.78K

Strike price

Held after

3.56K

Exercisable

—

6/6/2026

Security	Converts To	Date	Type	Shares	Exercisable	Held After
Restricted Stock Units Direct	Common Stock7.36K shares	6/5/2026	A · Award	+7.36K	—	7.36K
Restricted Stock Units Direct	Common Stock1.84K shares	6/5/2026	A · Award	+1.84K	—	1.84K
Restricted Stock Units Direct	Common Stock5.52K shares	6/5/2026	A · Award	+5.52K	—	5.52K
Restricted Stock Units Direct	Common Stock1.78K shares	6/6/2026	M · Option Exercise	−1.78K	—	3.56K

Non-Derivative Holdings (Post-Transaction)0

No non-derivative holdings reported

Derivative Holdings (Post-Transaction)1

Restricted Stock Units

Direct

Underlying security

Common Stock

Underlying shares

3.58K

Shares owned

3.58K

Exercise price

Expiration

—

Exercise window

—

Total

Underlying

3.58K

Owned

3.58K

Security	Underlying	Exercise Price	Exercise Window	Expiration	Underlying Shares	Shares Owned
Restricted Stock Units Direct	Common Stock		—	—	3.58K	3.58K
Total					3.58K	3.58K