---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-005202"
form_type: "8-K"
ticker: "BXSL"
cik: "0001736035"
company_name: "Blackstone Secured Lending Fund"
filed_at: "2023-01-10T23:59:59+00:00"
generated_at: "2026-06-20T17:11:13.240394+00:00"
event_type: "leadership"
sentiment: "positive"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Blackstone Secured Lending Fund appoints Jonathan Bock as Co-CEO alongside Brad Marshall

## Summary
- Jonathan Bock appointed Co-CEO of BXSL effective Jan 10, 2023, joining Brad Marshall (Chairman and Co-CEO).
- Brad Marshall promoted to Global Head of Private Credit Strategies, overseeing BXSL and BCRED BDCs.
- Blackstone Credit AUM grew 135% to $234B over five years; private credit strategies comprise ~half.
- Bock previously CEO of Barings BDC and a top-ranked BDC analyst at Wells Fargo Securities.
- Leadership changes aim to support continued expansion in private credit and BDC platform growth.

## SEC filing metadata
- accession: 0001193125-23-005202
- form_type: 8-K
- ticker: BXSL
- cik: 0001736035
- company_name: Blackstone Secured Lending Fund
- filed_at: 2023-01-10T23:59:59+00:00
- event_type: leadership
- sentiment: positive
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1736035/000119312523005202/0001193125-23-005202-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1736035/000119312523005202/d423536d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-005202
- JSON: https://secwatch.observer/filing/0001193125-23-005202.json
- Plain text: https://secwatch.observer/filing/0001193125-23-005202.txt

## Key facts
- Executive change
  Jonathan Bock was appointed as Co-Chief Executive Officer at Blackstone Secured Lending Fund.
  - Action: appointed
  - Role: Co-Chief Executive Officer
  source text: On January 5, 2023, the board of trustees of Blackstone Secured Lending Fund (the “ Fund ”) appointed Jonathan Bock to serve as Co-Chief Executive Officer of the Fund, effective as of January 10, 2023.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1736035/000119312523005202/0001193125-23-005202-index.htm

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