NACHLAS EMILY (Chief Risk Officer) exercised options at WESTERN ALLIANCE BANCORPORATION

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

M · 3 exercises

NACHLAS EMILY

Filed: 6/17/2026ACC: 0001628280-26-044006

InsiderNACHLAS EMILYCIK 1946843

→

IssuerWESTERN ALLIANCE BANCORPORATIONCIK 1212545

Officer· Chief Risk Officer

Since Feb 2026

-189.00

Net shares

Net seller

$15.5K

Total sold

Open market trades

0B · 0S

Total transactions

189.00 acquired · 378.00 disposed

Non-Derivative Transactions6

Common Stock

Direct

M · Option Exercise

+72.00

Price / share

—

Trade value

—

% of position

0.4%

6/15/2026

16.57K→16.65K

Common Stock

Direct

D · Disposition

−72.00

Price / share

$81.81

Trade value

$5.89K

% of position

0.4%

6/15/2026

16.65K→16.57K

Common Stock

Direct

M · Option Exercise

+53.00

Price / share

—

Trade value

—

% of position

0.3%

6/15/2026

16.57K→16.63K

Common Stock

Direct

D · Disposition

−53.00

Price / share

$81.81

Trade value

$4.34K

% of position

0.3%

6/15/2026

16.63K→16.57K

Common Stock

Direct

M · Option Exercise

+64.00

Price / share

—

Trade value

—

% of position

0.4%

6/15/2026

16.57K→16.64K

Common Stock

Direct

D · Disposition

−64.00

Price / share

$81.81

Trade value

$5.24K

% of position

0.4%

6/15/2026

16.64K→16.57K

Total

Net shares

+0.00

Net value

-$15.46K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	6/15/2026	M · Option Exercise	+72.00	—	—	0.4%	16.57K	16.65K
Common Stock Direct	6/15/2026	D · Disposition	−72.00	$81.81	$5.89K	0.4%	16.65K	16.57K
Common Stock Direct	6/15/2026	M · Option Exercise	+53.00	—	—	0.3%	16.57K	16.63K
Common Stock Direct	6/15/2026	D · Disposition	−53.00	$81.81	$4.34K	0.3%	16.63K	16.57K
Common Stock Direct	6/15/2026	M · Option Exercise	+64.00	—	—	0.4%	16.57K	16.64K
Common Stock Direct	6/15/2026	D · Disposition	−64.00	$81.81	$5.24K	0.4%	16.64K	16.57K
Total			+0.00		-$15.46K

Derivative Transactions3

Cash Settled Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

72.00 shares

−72.00

Strike price

Held after

573.00

Exercisable

—

6/15/2026

Cash Settled Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

53.00 shares

−53.00

Strike price

Held after

1.05K

Exercisable

—

6/15/2026

Cash Settled Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

64.00 shares

−64.00

Strike price

Held after

2.05K

Exercisable

—

6/15/2026

Security	Converts To	Date	Type	Shares	Exercisable	Held After
Cash Settled Restricted Stock Units Direct	Common Stock72.00 shares	6/15/2026	M · Option Exercise	−72.00	—	573.00
Cash Settled Restricted Stock Units Direct	Common Stock53.00 shares	6/15/2026	M · Option Exercise	−53.00	—	1.05K
Cash Settled Restricted Stock Units Direct	Common Stock64.00 shares	6/15/2026	M · Option Exercise	−64.00	—	2.05K