SEC Form 4
Blackstone Secured Lending Fund (BXSL) insider trading
In the 12 months to Oct 26, 2026, 4 BXSL insiders reported open-market purchases of $170.5K across 5 filings; no open-market sales were filed.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $0
- 0 filings · 0 insiders
- Open-market purchases
- $170.5K
- 5 filings
Who traded BXSL, and when
- Purchase
BXSL daily close from Oct 27, 2025 to Oct 26, 2026, between $22.91 and $28.39, last $22.91. 0 sale and 5 purchase filings by 4 insiders, marked at their filing dates. James Frederic Clark, Other: bought $71.2K across 2 filings, first filed Nov 13, 2025, last Mar 12, 2026. Robert J. Bass, Other: bought $49.9K across 1 filing, first filed May 13, 2026, last May 13, 2026. Katherine Rubenstein, Chief Operating Officer: bought $24.9K across 1 filing, first filed Mar 11, 2026, last Mar 11, 2026. Lucie Enns, Officer (see filing): bought $24.5K across 1 filing, first filed Mar 16, 2026, last Mar 16, 2026.
Largest mark · tap a row for others
James Frederic Clark · Other
Purchase $53,360
2,000 shares at $26.68 avg
Filed Nov 13, 2025 · traded Nov 11
Close on filing date $26.62
James Frederic Clark · Other
Other
$71.2K boughtRobert J. Bass · Other
Other
$49.9K boughtKatherine Rubenstein · Chief Operating Officer
Chief Operating Officer
$24.9K boughtLucie Enns · Officer (see filing)
Officer (see filing)
$24.5K boughtOpen-market trades
5 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| James Frederic Clark | Other | — | $71.2K | 2 | — | |
| Robert J. Bass | Other | — | $49.9K | 1 | — | |
| Katherine Rubenstein | Chief Operating Officer | — | $24.9K | 1 | — | |
| Lucie Enns | Officer (see filing) | — | $24.5K | 1 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Robert J. Bass Other | Purchase | 2,095 | $23.80 | $49.9K | 25,107 | |
traded | Lucie Enns Officer (see filing) | Purchase | 1,045 | $23.48 | $24.5K | 1,045 | |
traded | James Frederic Clark Other | Purchase | 750 | $23.78 | $17.8K | 2,750 | |
traded | Katherine Rubenstein Chief Operating Officer | Purchase | 1,035 | $24.08 | $24.9K | 5,771 | |
traded | James Frederic Clark Other | Purchase | 2,000 | $26.68 | $53.4K | 2,000 |
GET /stocks/filings/vX/form-4?tickers=BXSL&filing_date.gte=2025-10-26&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"BXSL"
],
"issuer_cik": "0001736035",
"owner_cik": "0001552681",
"accession_number": "0001213900-26-055848",
"form_type": "4",
"filing_date": "2026-05-13",
"period_of_report": "2026-05-12",
"issuer_name": "Blackstone Secured Lending Fund",
"issuer_trading_symbol": "BXSL",
"owner_name": "Bass Robert J",
"is_director": false,
"is_officer": false,
"is_ten_percent_owner": false,
"is_other": true,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Shares of Beneficial Interest",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-05-12",
"transaction_code": "P",
"equity_swap_involved": false,
"transaction_shares": 2095,
"transaction_price_per_share": 23.795,
"transaction_acquired_disposed": "A",
"shares_owned_following_transaction": 25107,
"transaction_value": 49850.525,
"not_subject_to_section_16": false,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "Includes common shares acquired through the Issuer's distribution reinvestment plan."
}
]
},
{
"tickers": [
"BXSL"
],
"issuer_cik": "0001736035",
"owner_cik": "0002021230",
"accession_number": "0001213900-26-028329",
"form_type": "4",
"filing_date": "2026-03-16",
"period_of_report": "2026-03-13",
"issuer_name": "Blackstone Secured Lending Fund",
"issuer_trading_symbol": "BXSL",
"owner_name": "ENNS LUCIE",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "See Remarks",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Shares of Beneficial Interest",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-03-13",
"transaction_code": "P",
"equity_swap_involved": false,
"transaction_shares": 1045,
"transaction_price_per_share": 23.48,
"transaction_acquired_disposed": "A",
"shares_owned_following_transaction": 1045,
"transaction_value": 24536.600000000002,
"not_subject_to_section_16": false,
"direct_or_indirect": "D",
"remarks": "Chief Legal Officer and Secretary; Exhibit 24 - Power of Attorney"
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.
Frequently asked questions
How current is BXSL’s insider data?
These are BXSL Form 4 filings from the last year, refreshed daily. The Massive Form 4 API has the full, continuously updated record.
What counts as an open-market buy or sell?
Only purchases and sales at the market price. Option exercises, grants, gifts, and shares withheld for taxes are reported on Form 4 but are left out of the buy and sell totals.
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This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for BXSL every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
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