---
schema_version: "secwatch.filing_event.v1"
accession: "0001699350-26-000016"
form_type: "8-K"
ticker: "SI"
cik: "0001699350"
company_name: "SHOULDER INNOVATIONS, INC."
filed_at: "2026-04-14T23:59:59+00:00"
generated_at: "2026-05-15T06:23:50.090686+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Shoulder Innovations signs 10-year lease for new 15,200 sq ft HQ in Byron Center, MI

## Summary
- Lease with Ventura Office Park Lot #8, LLC for a new building with office/warehouse space.
- Initial term of 10 years with two 5-year extension options and expansion rights.
- Aggregate rent over initial term ~$4.4M; security deposit of $33K and $0.5M construction down payment.
- Expected occupancy in Q4 2027 upon issuance of certificate of occupancy.
- Company intends to use premises as its corporate headquarters.

## SEC filing metadata
- accession: 0001699350-26-000016
- form_type: 8-K
- ticker: SI
- cik: 0001699350
- company_name: SHOULDER INNOVATIONS, INC.
- filed_at: 2026-04-14T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 1.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1699350/000169935026000016/0001699350-26-000016-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1699350/000169935026000016/si-20260413.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001699350-26-000016
- JSON: https://secwatch.observer/filing/0001699350-26-000016.json
- Plain text: https://secwatch.observer/filing/0001699350-26-000016.txt

## Source-grounded claims
- claim_id: 8929296b6cb5427476f586983d0edb5e90fc950e
  claim: SHOULDER INNOVATIONS, INC. entered into Lease Agreement with Ventura Office Park Lot #8, LLC valued at approximately $4.4 million (effective 2026-04-13).
  evidence_excerpt: On April 13, 2026, Shoulder Innovations, Inc. (the “Company”) entered into a lease agreement (the “Lease Agreement”) with Ventura Office Park Lot #8, LLC (the “Landlord”), whereby the Landlord has agreed to construct the Company a new commercial building of approximately 15,200 square feet located at 6320 Venture Hills Boulevard, SW, Lot 8, Byron Center, Michigan 49315 (the “Premises”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1699350/000169935026000016/0001699350-26-000016-index.htm

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