---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-23-108726"
form_type: "8-K"
ticker: "HDSN"
cik: "0000925528"
company_name: "HUDSON TECHNOLOGIES INC /NY"
filed_at: "2023-10-12T23:59:59+00:00"
generated_at: "2026-06-10T01:27:16.778975+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# Hudson Technologies appoints Kathleen L. Houghton to Board; Mandracchia resigns

## Summary
- Kathleen L. Houghton, current VP Sales & Marketing, elected to Board effective Oct 11, 2023; term expires at June 2024 annual meeting.
- Stephen P. Mandracchia resigned from Board same date; not due to disagreement; extension of his stock option exercise period.
- Houghton joined in 2014; under her leadership, revenue grew from $162.1M (2019) to $325.2M (2022).
- Company's refrigerant recovery services named Top 10 product for 2023 by BuildingGreen; EMERALD Refrigerants Top Product by E+E Leader.

## SEC filing metadata
- accession: 0001104659-23-108726
- form_type: 8-K
- ticker: HDSN
- cik: 0000925528
- company_name: HUDSON TECHNOLOGIES INC /NY
- filed_at: 2023-10-12T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/925528/000110465923108726/0001104659-23-108726-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/925528/000110465923108726/tm2328258d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-23-108726
- JSON: https://secwatch.observer/filing/0001104659-23-108726.json
- Plain text: https://secwatch.observer/filing/0001104659-23-108726.txt

## Key facts
- Executive change
  Kathleen L. Houghton was elected as Director at HUDSON TECHNOLOGIES INC /NY.
  - Action: elected
  - Role: Director
  source text: On October 11, 2023, upon the recommendation of the Nominating Committee, the Board of Directors (the “Board”) of Hudson Technologies, Inc. (the “Company”) elected Kathleen L. Houghton to the Board, effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/925528/000110465923108726/0001104659-23-108726-index.htm
- Executive change
  Stephen P. Mandracchia resigned as Director at HUDSON TECHNOLOGIES INC /NY.
  - Action: resigned
  - Role: Director
  source text: On October 11, 2023, Stephen P. Mandracchia provided notice to the Company of his resignation as a member of the Board, effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/925528/000110465923108726/0001104659-23-108726-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.