HOUGHTON KATHLEEN

PrivateCIK: 1824104
Location

PEARL RIVER, NY

HOUGHTON KATHLEEN (VP - Sales and Marketing) exercised options at HUDSON TECHNOLOGIES INC /NY

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

M · 3 exercises
InsiderHOUGHTON KATHLEENCIK 1824104
Officer· VP - Sales and Marketing
Since Sep 2020
-101.05K
Net shares
Net seller
$717.5K
Total sold
0
Open market trades
0B · 0S
9
Total transactions
218.51K acquired · 319.56K disposed
Non-Derivative Transactions6

Common Stock

Direct
M · Option Exercise

Shares

+120K

Price / share

$0.75

Trade value

$90K

% of position

291.5%
1/8/2026
41.16K161.16K

Common Stock

Direct
F · Tax Withholding

Shares

44.87K

Price / share

$7.10

Trade value

$318.60K

% of position

27.8%
1/8/2026
161.16K116.29K

Common Stock

Direct
M · Option Exercise

Shares

+47.62K

Price / share

$1.60

Trade value

$76.19K

% of position

40.9%
1/8/2026
116.29K163.91K

Common Stock

Direct
F · Tax Withholding

Shares

21.80K

Price / share

$7.10

Trade value

$154.76K

% of position

13.3%
1/8/2026
163.91K142.11K

Common Stock

Direct
M · Option Exercise

Shares

+50.89K

Price / share

$3.81

Trade value

$193.88K

% of position

35.8%
1/8/2026
142.11K193K

Common Stock

Direct
F · Tax Withholding

Shares

34.38K

Price / share

$7.10

Trade value

$244.11K

% of position

17.8%
1/8/2026
193K158.62K
Total

Net shares

+117.45K

Net value

-$357.40K

Derivative Transactions3

Stock Option

Direct
M · Option Exercise
Converts to

Common Stock

120K shares

Shares

120K

Strike price

0.75

Held after

0.00

Exercisable

1/8/2026

Stock Option

Direct
M · Option Exercise
Converts to

Common Stock

47.62K shares

Shares

47.62K

Strike price

1.60

Held after

0.00

Exercisable

1/8/2026

Stock Option

Direct
M · Option Exercise
Converts to

Common Stock

50.89K shares

Shares

50.89K

Strike price

3.81

Held after

0.00

Exercisable

1/8/2026
HOUGHTON KATHLEEN — Insider Transaction (Form 4) Filed Jan 12, 2026 | Finecho