---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-23-107859"
form_type: "8-K"
ticker: "SLG"
cik: "0001040971"
company_name: "SL GREEN REALTY CORP"
filed_at: "2023-10-10T23:59:59+00:00"
generated_at: "2026-06-10T01:59:23.885987+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# SL Green President Andrew Mathias to depart Dec 31, 2023; remains on board and advisory

## Summary
- Andrew Mathias's employment agreement non-renewed; termination effective Dec 31, 2023; no disagreement with company.
- Mathias will remain on Board and serve as advisor under one-year advisory agreement at $8,333/month plus perks.
- CEO Marc Holliday appointed interim President effective Jan 1, 2024.
- Mathias to receive severance including base salary, bonus, equity acceleration per existing agreement.

## SEC filing metadata
- accession: 0001104659-23-107859
- form_type: 8-K
- ticker: SLG
- cik: 0001040971
- company_name: SL GREEN REALTY CORP
- filed_at: 2023-10-10T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1040971/000110465923107859/0001104659-23-107859-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1040971/000110465923107859/tm2328056d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-23-107859
- JSON: https://secwatch.observer/filing/0001104659-23-107859.json
- Plain text: https://secwatch.observer/filing/0001104659-23-107859.txt

## Key facts
- Executive change
  Andrew Mathias departed as President at SL GREEN REALTY CORP.
  - Action: non-renewal
  - Role: President
  source text: the Company has provided Mr. Mathias notice of non-renewal of the Employment Agreement, and, as a result, the Employment Agreement will terminate at 11:59 p.m. Eastern Standard Time on December 31, 2023 (the “Separation Date”) and Mr. Mathias will cease to serve in his role as President of the Company.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1040971/000110465923107859/0001104659-23-107859-index.htm
- Executive change
  Marc Holliday was appointed as President (interim) at SL GREEN REALTY CORP.
  - Action: appointed
  - Role: President (interim)
  source text: the Board anticipates appointing Marc Holliday, the Company’s Chief Executive Officer and Chairman of the Board, to the role of President of the Company, on an interim basis, effective immediately following the Separation Date.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1040971/000110465923107859/0001104659-23-107859-index.htm

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