SourcingSourcing

CASTLEARK MANAGEMENT LLC

C40
CRD 109587·SEC 801-56239·CHICAGO, IL
AUM
$4.59B
$1B+
Est. Revenue
$45.9M
@ 1% on AUM
Est. EBITDA
$13.8M
@ 30% margin
Est. Deal Value
$110.1M
@ 8× EBITDA

Identity

Registrations & legal identity

Legal name
CASTLEARK MANAGEMENT LLC
CRD
109587
SEC file #
801-56239
EIN
203870408
DBA names
—

Economics

AUM
$4.59B
AUM band
$1B+
AUM trajectory
'20'26
$2.87B → $4.59B▲ +60%
Client mix
Individuals High Net Worth46
State Or Municipal Govt11
Pooled Investment Vehicles5
Pension Profit Sharing Plans3
Investment Companies1

Operations

Employees (total)
28
Advisory staff (per ADV)
18
Advisory staff (5-yr trend)
'20'26
17 advisors → 18 advisors▲ +6%
Primary office
CHICAGO IL
Branches
—

Custodian & Brokerage

Primary custodian
E*Tradelow confidence
Services offered
Portfolio mgmt — individualsPortfolio mgmt — investment companiesPortfolio mgmt — pooled vehiclesPortfolio mgmt — businesses
Fee basis
% of AUM

Filings

Latest ADV filing
04/01/2026
ADV-W filed at
—
Website
castleark.com

Compliance

Disclosures (firm)
0
Trademark
—
Additional signalsExpand ▾

Ownership & succession ★

Who controls the firm + pre-computed succession flags

Top Owner Name
CASTLEARK HOLDINGS, LLC
Top Owner Pct
87.5
Top Owner Entity Kind
DE
Owner Count
10
Control Persons
CASTLEARK HOLDINGS, LLC
CASTELLINI, JEROME, A
Solo Advisor Indicator
No
Succession Risk Solo Owner
No
Is Parent Owned Subsidiary
Yes

Availability / M&A ★

Already-acquired = skip; deal comps

Adv W Filed
No

Web presence ★

Stale website = winding down

Web Signal Quality
ok
Rdap Domain
CASTLEARK.COM
Rdap Domain Creation Date
1999-02-11T05:00:00Z
Rdap Firm Age Years
27
Rdap Firm Age Band
20+y
Rdap Registrar
Network Solutions, LLC

Retirement-plan book (Form 5500) ★

401(k)/plan business — cross-sell value

Retirement Plan Book
Yes
Form 5500 Plan Count
4
Form 5500 Total Participants
1
Form 5500 Total Compensation
1,427,193
Form 5500 Compensation Trajectory 3y
20251,427,193
20240
Form 5500 Plan Count Trajectory 3y
20253
20241
Schedule C Total Compensation
1,427,193
Schedule C Service Provider Rows
4

SEC EDGAR

Edgar Cik
0001541213
Edgar Registered
Yes
Edgar Filing Count
1
Edgar First Filing Date
2012-02-02
Edgar Last Filing Date
2012-02-02
Edgar Form D Count
1
Edgar Form D Offerings
2012-02-022012-02-02 · 0001541213-12-000001

Compliance & brand

Firm Registration Status
active

All other collected signals (16)

Everything else we've pulled for this record, not yet curated into a section.

Adv W Recently Filed
No
Bc Firm Active Bc Count
0
Bc Firm Active IA Count
0
Bc Firm IAR Count
0
Custodian Candidates
Full
E*trade4
State Street3
Goldman Sachs2
Northern Trust2
Bny Mellon2
Edgar Addresses
Mailing
1 NORTH WACKER, SUITE 3950CHICAGO, IL 60606
Business
1 NORTH WACKER, SUITE 3950CHICAGO, IL 60606
Edgar EIN
203870408
Edgar Recent Filings
D2012-02-02 · 0001541213-12-000001
Firm Has Custody
No
Mailing Office Differs
No
Rdap Domain Expiration Date
2031-02-11T05:00:00Z
Rdap Domain Last Changed
2025-12-13T07:10:00Z
Rdap Nameservers
Ns29.worldnic.comNs30.worldnic.com
Rdap Secure Dns Enabled
No
Rdap Status
Client Transfer Prohibited
Trust Company Affiliate
No

People (9)

9
CASTELLINI, JEROME, A
Direct Owner · 62.5%
1333585
BAXTER, GREGORY, PETER
Executive Officer · 2.5%
4548246
BECKER, DANIEL, P
Executive Officer · 2.5%
2016895
CASTELLINI, JAMES, H
Executive Officer · 2.5%
5031741
Hagan, Joseph, M
Executive Officer · 2.5%
7092145
Johnson, Sarah, Williams
Executive Officer · 2.5%
8040013
OSTROWSKI, QUENTIN, MICHAEL
Executive Officer · 2.5%
1866059
REDDI, AJOY
Executive Officer · 2.5%
4092141
STARK, JAMES, ARTHUR
Executive Officer · 2.5%
1965258