---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-201167"
form_type: "8-K"
ticker: "RGEN"
cik: "0000730272"
company_name: "REPLIGEN CORP"
filed_at: "2023-08-02T23:59:59+00:00"
generated_at: "2026-06-12T15:30:55.778060+00:00"
event_type: "earnings"
sentiment: "negative"
materiality_score: 0.88
calibrated_materiality_score: 0.88
confidence: "high"
source: SEC EDGAR
---

# Repligen Q2 revenue down 23%; slashes FY2023 revenue guidance to $635-$665M

## Summary
- Q2 total revenue $159.2M (-23.3% YoY); base business revenue down 8.7%.
- GAAP diluted EPS $0.35 vs $0.88 in Q2 2022; adjusted EPS $0.53 vs $0.91.
- Full-year revenue guidance cut to $635-$665M from $720-$760M, a 27% reduction at midpoint.
- Base business now expected to decline 5-10% in FY2023 vs prior guidance of +4-8%.
- CEO cites inventory overhang and longer purchase approvals; Filtration segment most impacted.

## SEC filing metadata
- accession: 0001193125-23-201167
- form_type: 8-K
- ticker: RGEN
- cik: 0000730272
- company_name: REPLIGEN CORP
- filed_at: 2023-08-02T23:59:59+00:00
- event_type: earnings
- sentiment: negative
- materiality_score: 0.88
- calibrated_materiality_score: 0.88
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/730272/000119312523201167/0001193125-23-201167-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/730272/000119312523201167/d472296d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-201167
- JSON: https://secwatch.observer/filing/0001193125-23-201167.json
- Plain text: https://secwatch.observer/filing/0001193125-23-201167.txt

## Key facts
- Earnings Releases
  REPLIGEN CORP reported fiscal year 2023 results: revenue $635-$665 million. Guidance lowered.
  - Period: fiscal year 2023
  - Revenue: $635-$665 million
  - Guidance: lowered
  - Result: guidance update
  source text: Total reported revenue is expected to be in the range of $635-$665 million, compared to our previous guidance of $720-$760 million.
  evidence_url: https://www.sec.gov/Archives/edgar/data/730272/000119312523201167/0001193125-23-201167-index.htm
- Earnings Releases
  REPLIGEN CORP reported second quarter ended June 30, 2023 results: revenue $159.2 million, net income $20.1 million, EPS $0.35. Guidance lowered.
  - Period: second quarter ended June 30, 2023
  - Revenue: $159.2 million
  - Net income: $20.1 million
  - EPS: $0.35
  - Guidance: lowered
  - Result: reported results
  source text: Suite 100 Waltham, Massachusetts 02453 Repligen Reports Second Quarter 2023 Financial Results and Updates Full Year 2023 Financial Guidance • Reports second quarter revenues of $159.2 million as reported, and base business revenues of $157.1 million, down 9% year-over-year • Adjusts full year revenue guidance to range of $635-$665 million WALTHAM, Mass., August 02,
  evidence_url: https://www.sec.gov/Archives/edgar/data/730272/000119312523201167/0001193125-23-201167-index.htm

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