MCCOMBE WILLIAM D.

PrivateCIK: 1878824
Location

CAMPBELL, CA

MCCOMBE WILLIAM D. (Chief Financial Officer) exercised options at CYTEK BIOSCIENCES, INC.

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

M · 3 exercises
InsiderMCCOMBE WILLIAM D.CIK 1878824
IssuerCYTEK BIOSCIENCES, INC.CIK 1831915
Officer· Chief Financial Officer
Since Mar 2026
-11.90K
Net shares
Net seller
$55.6K
Total sold
0
Open market trades
0B · 0S
9
Total transactions
35.42K acquired · 47.32K disposed
Non-Derivative Transactions6

Common Stock

Direct
M · Option Exercise

Shares

+6.32K

Price / share

Trade value

% of position

5.7%
8/18/2026
111.18K117.50K

Common Stock

Direct
F · Tax Withholding

Shares

2.11K

Price / share

$4.67

Trade value

$9.86K

% of position

1.8%
8/18/2026
117.50K115.39K

Common Stock

Direct
M · Option Exercise

Shares

+13.05K

Price / share

Trade value

% of position

11.3%
8/18/2026
115.39K128.44K

Common Stock

Direct
F · Tax Withholding

Shares

4.39K

Price / share

$4.67

Trade value

$20.51K

% of position

3.4%
8/18/2026
128.44K124.05K

Common Stock

Direct
M · Option Exercise

Shares

+16.05K

Price / share

Trade value

% of position

12.9%
8/18/2026
124.05K140.09K

Common Stock

Direct
F · Tax Withholding

Shares

5.40K

Price / share

$4.67

Trade value

$25.22K

% of position

3.9%
8/18/2026
140.09K134.69K
Total

Net shares

+23.52K

Net value

-$55.59K

Derivative Transactions3

Restricted Stock Units

Direct
M · Option Exercise
Converts to

Common Stock

6.32K shares

Shares

6.32K

Strike price

Held after

44.25K

Exercisable

8/18/2026

Restricted Stock Units

Direct
M · Option Exercise
Converts to

Common Stock

13.05K shares

Shares

13.05K

Strike price

Held after

134.86K

Exercisable

8/18/2026

Restricted Stock Units

Direct
M · Option Exercise
Converts to

Common Stock

16.05K shares

Shares

16.05K

Strike price

Held after

230.04K

Exercisable

8/18/2026