---
schema_version: "secwatch.filing_event.v1"
accession: "0001699350-26-000021"
form_type: "8-K"
ticker: "SI"
cik: "0001699350"
company_name: "SHOULDER INNOVATIONS, INC."
filed_at: "2026-04-27T23:59:59+00:00"
generated_at: "2026-05-15T03:52:52.248844+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Shoulder Innovations launches InSet I-135RFX Humeral Stem with expanded fracture indications

## Summary
- Full commercial launch of InSet I-135RFX Humeral Stem after limited market release and FDA 510(k) clearance for fracture indications.
- Product now indicated for primary, revision, and fracture total shoulder arthroplasty.
- Third addition to I-Series humeral stem line in three years, following InSet 95 (2024) and InSet 70 (2025).
- CEO Rob Ball says launch supports full spectrum of shoulder arthroplasty procedures.
- Built on InSet lateral-lateral implant philosophy shown to reduce complications and improve range of motion.

## SEC filing metadata
- accession: 0001699350-26-000021
- form_type: 8-K
- ticker: SI
- cik: 0001699350
- company_name: SHOULDER INNOVATIONS, INC.
- filed_at: 2026-04-27T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1699350/000169935026000021/0001699350-26-000021-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1699350/000169935026000021/si-20260427.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001699350-26-000021
- JSON: https://secwatch.observer/filing/0001699350-26-000021.json
- Plain text: https://secwatch.observer/filing/0001699350-26-000021.txt

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