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4//SEC Filing

Houghton Kathleen 4

Accession 0000925528-26-000002

CIK 0000925528other

View on SEC.gov Company Profile

Filed

Jan 11, 7:00 PM ET

Accepted

Jan 12, 2:51 PM ET

Size

17.4 KB

Accession

0000925528-26-000002

Insider Transaction Report

Form 4

Period: 2026-01-08

HUDSON TECHNOLOGIES INC /NYHDSN

Houghton Kathleen

DirectorSr. VP-Sales and Marketing

Transactions

Exercise/Conversion
Common Stock
2026-01-08$0.75/sh+120,000$90,000→ 161,163 total
Tax Payment
Common Stock
2026-01-08$7.10/sh−44,873$318,598→ 116,290 total
Exercise/Conversion
Common Stock
2026-01-08$1.60/sh+47,619$76,190→ 163,909 total
Tax Payment
Common Stock
2026-01-08$7.10/sh−21,797$154,759→ 142,112 total
Exercise/Conversion
Common Stock
2026-01-08$3.81/sh+50,888$193,883→ 193,000 total
Tax Payment
Common Stock
2026-01-08$7.10/sh−34,382$244,112→ 158,618 total
Exercise/Conversion
Stock Option
2026-01-08−120,000→ 0 total
Exercise: $0.75From: 2020-12-31Exp: 2029-12-19→ Common Stock (120,000 underlying)
Exercise/Conversion
Stock Option
2026-01-08−47,619→ 0 total
Exercise: $1.60From: 2021-03-12Exp: 2026-03-12→ Common Stock (47,619 underlying)
Exercise/Conversion
Stock Option
2026-01-08−50,888→ 0 total
Exercise: $3.81From: 2023-02-24Exp: 2027-02-24→ Common Stock (50,888 underlying)

Signature

/s/ Kathleen Houghton|2026-01-12

Documents

1 file

4
form4.xmlPrimary
STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Issuer

HUDSON TECHNOLOGIES INC /NY

CIK 0000925528

Entity typeother

Related Parties

1

filerCIK 0001824104

Filing Metadata

Form type: 4
Filed: Jan 11, 7:00 PM ET
Accepted: Jan 12, 2:51 PM ET
Size: 17.4 KB

View on SEC.gov