SEC ownership of West Bay BDC LLC

Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0002020354.

Comparable stake leader

Qatar Investment Authority

Disclosed value leader

Exor N.V.

Comparable rows

7/8

Latest evidence

06 Aug 2026

Top shareholders Insider holders Latest transactions
Parsed ownership sources
3/4/5, 13D/G, and 13F
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
Largest SEC-reported holder
Qatar Investment Authority
Ranking: Comparable ownership first, then disclosed value
Ownership snapshot CIK-linked ownership evidence from parsed SEC filings. 3 signals
Comparable ownership rows
7 of 8
Meaning: Rows with safely comparable ownership %
Latest 13D/G holder
Qatar Investment Authority
Source: Latest parsed Schedule 13D/G stake
Latest parsed ownership date
06 Aug 2026
Freshness: Most recent filing date in this holder set
Issuer Names, identifiers, and filing context for this profile. 2 identity fields
Issuer CIK
0002020354
Issuer location
New York, NY

Ownership snapshot

Top shareholders of West Bay BDC LLC (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader
Qatar Investment Authority
Disclosed value leader
Exor N.V.
Comparable rows
7/8
Latest evidence
06 Aug 2026
3/4/5 13D/G 13F Lead comparable stake: 97% 1 rows are not safely comparable across share classes. 13D/G row: Qatar Investment Authority

Quick read

Qatar Investment Authority leads the comparable SEC ownership view at 97%.

7 of 8 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens Qatar Investment Authority's linked filing trail.
Comparable ownership Top 5
Qatar Investment Authority 97%
Exor N.V. 586%
ORBIMED ADVISORS LLC 18%
GAGNON SECURITIES LLC 2.4%
Gagnon Advisors, LLC 1%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-8 of 8 holder rows
Holder Evidence Ownership % Position 12M Net Δ As of
Qatar Investment Authority
3/4/5 13D/G
10%+ Owner
3/4/5 13D/G
97%
from 13D/G
$309,386,686
17,668,436 shares
 +$189,000,000 06 Aug 2026
Exor N.V.
13F
Company
13F
586%
$5,055,509,678
185,932,684 shares
 — 30 Jun 2026
ORBIMED ADVISORS LLC
13F
Company
13F
18%
$30,275,391
5,680,186 shares
 — 30 Jun 2026
GAGNON SECURITIES LLC
13F
Company
13F
2.4%
$11,697,619
765,179 shares
 — 30 Jun 2026
Gagnon Advisors, LLC
13F
Company
13F
1%
$6,119,731
328,488 shares
 — 30 Jun 2026
Main Street Group, LTD
13F
Company
13F
0%
$213
213 shares
 — 30 Jun 2026
Park Place Capital Corp
13F
Company
13F
0%
$7,792
1 shares
 — 30 Jun 2026
GSAM Holdings LLC
3/4/5
Other*
3/4/5
—
class O/S missing
$6,047,136
530,553 shares
 +$1,349,998 06 Aug 2026
How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Forms 3/4/5 flow

Insider trading overview

Net insider flow leans to buying over the last 12 months. Net value: +$190,349,998.

Buys
$190,349,998
Insiders: 2
Sells
$0
Insiders: 0
Net
+$190,349,998
Shares: +10,900,980
Window
Last 12 months
4 rolling buckets
Buy value Sell value
Shares: 10,900,980 Shares: 0
Window (months) Buy shares Sell shares Buy value Sell value Net value
0-3 1,541,914 0 $27,000,000 $0 +$27,000,000
3-6 2,577,320 0 $45,000,000 $0 +$45,000,000
6-9 1,541,026 0 $27,000,000 $0 +$27,000,000
9-12 5,240,720 0 $91,349,998 $0 +$91,349,998

Reporting owners

Insider holders from Forms 3/4/5

Showing 1-20 of 20 reporting-owner rows connected to West Bay BDC LLC. Open a relationship link for the CIK-to-CIK filing trail.

Rows
20
Largest Forms 3/4/5 holder
Qatar Investment Authority
Net 12M change
+$190,349,998
Latest report
06 Aug 2026
Name Relationship Holdings Value Past Year Net Change Change % Valuation Report Date
Qatar Investment Authority 10%+ Owner $309,386,686 +$189,000,000 +157% Filing P/S 06 Aug 2026
GSAM Holdings LLC Other* $6,047,136 +$1,349,998 +29% Mixed 06 Aug 2026
David Miller Co-Chief Executive Officer and Co-President. Exhibit List: Exhibit 24.0 - Power of Attorney Mixed 28 Jul 2024
Greg Watts Vice President Mixed 28 Jul 2024
Jennifer Yang Vice President Mixed 28 Jul 2024
Julien Yoo Chief Compliance Officer Mixed 28 Jul 2024
Stanley Matuszewski Chief Financial Officer and Treasurer. Exhibit List: Exhibit 24.0 - Power of Attorney Mixed 28 Jul 2024
Tucker Greene Chief Operating Officer Mixed 28 Jul 2024
Justin Betzen Vice President Mixed 28 Jul 2024
Katherine Uniacke Director Mixed 28 Jul 2024
Tracy Grooms Director Mixed 31 Dec 2025
Vivek Bantwal Co-Chief Executive Officer. Exhibit List: Exhibit 24.0 - Power of Attorney Mixed 07 Aug 2025
Timothy J. Leach Director Mixed 31 Dec 2025
Richard A. Mark Director Mixed 31 Dec 2025
Mai Elsamahy Principal Accounting Officer. Exhibit List: Exhibit 24.0 - Power of Attorney Mixed 28 Jul 2024
Alex Chi Officer Mixed 07 Aug 2025
Carlos E. Evans Director Mixed 28 Jul 2024
Caroline Kraus Chief Legal Officer Mixed 28 Jul 2024
Matthew Ryan Carter Vice President Mixed 26 Feb 2025
Barkley Karole Dill Director Mixed 31 Dec 2025

Recent insider transactions for West Bay BDC LLC

Showing up to 300 recent insider transactions from the last 12 months.

Insider Symbol Class Transaction % SEC-reported value SEC-reported price Shares Shares owned Date Ownership
Qatar Investment Authority Limited Liability Company Units Purchase 9.56% $27,000,000 $17.51 1,541,914 17,668,436 06 Aug 2026 Held by West Bay Holding LLC
GSAM Holdings LLC Common Units of limited liability company interests Award 9.55% 46,257 530,553 06 Aug 2026 Direct
Qatar Investment Authority Limited Liability Company Units Purchase 14.6% 2,061,254 16,126,522 25 Jun 2026 Held by West Bay Holding LLC
GSAM Holdings LLC Common Units of limited liability company interests Award 14.6% 61,838 484,296 25 Jun 2026 Direct
Qatar Investment Authority Limited Liability Company Units Purchase 22.4% $45,000,000 $17.46 2,577,320 14,065,268 13 Mar 2026 Held by West Bay Holding LLC
GSAM Holdings LLC Common Units of limited liability company interests Award 22.4% 77,320 422,458 13 Mar 2026 Direct
Qatar Investment Authority Limited Liability Company Units Purchase 15.5% $27,000,000 $17.52 1,541,026 11,487,966 23 Dec 2025 Held by West Bay Holding LLC
GSAM Holdings LLC Common Units of limited liability company interests Award 15.5% 46,231 345,138 23 Dec 2025 Direct
GSAM Holdings LLC Common Units of limited liability company interests Award 35% 77,483 298,908 26 Nov 2025 Direct
Qatar Investment Authority Limited Liability Company Units Purchase 35.1% $45,000,000 $17.42 2,582,778 9,946,941 26 Nov 2025 Held by West Bay Holding LLC
GSAM Holdings LLC Common Units of limited liability company interests Purchase 53.8% $1,349,998 $17.44 77,416 221,425 22 Sep 2025 Direct
Qatar Investment Authority Limited Liability Company Units Purchase 53.9% $45,000,000 $17.44 2,580,527 7,364,163 22 Sep 2025 Held by West Bay Holding LLC
* marks a reported price that did not pass the local price check.
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