---
schema_version: "secwatch.filing_event.v1"
accession: "0001438133-23-000253"
form_type: "8-K"
ticker: "TNDM"
cik: "0001438133"
company_name: "TANDEM DIABETES CARE INC"
filed_at: "2023-12-11T23:59:59+00:00"
generated_at: "2026-06-07T14:48:50.604405+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# COO David Berger steps down Dec 31; transitions to part-time advisor through 2024

## Summary
- Berger resigns as EVP & COO effective Dec 31, 2023; no successor named.
- Advisory period Jan–Jun 2024: part-time employee at $29,139/month plus $43,709 retention bonus.
- Consulting period Jul–Dec 2024: independent contractor up to 8 hrs/month; time-based equity vesting ceases.
- Prior severance agreement terminated upon separation; equity awards continue vesting during advisory period.
- Berger eligible for 2023 corporate bonus; no bonus for 2024 or later.

## SEC filing metadata
- accession: 0001438133-23-000253
- form_type: 8-K
- ticker: TNDM
- cik: 0001438133
- company_name: TANDEM DIABETES CARE INC
- filed_at: 2023-12-11T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1438133/000143813323000253/0001438133-23-000253-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1438133/000143813323000253/tndm-20231205.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001438133-23-000253
- JSON: https://secwatch.observer/filing/0001438133-23-000253.json
- Plain text: https://secwatch.observer/filing/0001438133-23-000253.txt

## Key facts
- Executive change
  David B. Berger departed as Executive Vice President and Chief Operating Officer at TANDEM DIABETES CARE INC.
  - Action: stepping down
  - Role: Executive Vice President and Chief Operating Officer
  source text: on November 7, 2023, the Company and David B. Berger, the Company’s Executive Vice President and Chief Operating Officer, determined that Mr. Berger will be stepping down from his current position effective December 31, 2023.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1438133/000143813323000253/0001438133-23-000253-index.htm

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