CASTLEARK MANAGEMENT LLC

CRD 109587File 801-56239

APPROVED

Retail clients

Filing as of Apr 1, 2026

Feed vintage Aug 17, 2026

Regulatory AUM

$4.59B

Top 25% of cohort (national)

Discretionary AUM

$4.59B

Clients

66 accounts

Employees

Top 25% of cohort in IL

Identity & registration

ADV Item 1

Organization form: Limited Liability Company
Firm type: Registered
SEC region: CHRO
Registration date: Feb 4, 1999
Principal office: 1 N. WACKER DRIVE, SUITE 3950, CHICAGO, IL, 60606
Phone: 312-456-9682
Website: HTTP://WWW.CASTLEARK.COM

Assets & accounts

ADV Item 5F

Total regulatory AUM: $4.59B
Discretionary AUM: $4.59B
Non-discretionary AUM: $0
Discretionary accounts: 66
Non-discretionary accounts: 0
Total accounts: 66
AUM per client: $69.5M

Clients by type

ADV Item 5D

Client type	Clients	AUM
Investment companies	1	$311.7M
High net worth individuals	46	$76.8M
Pooled investment vehicles	5	$362.4M
Pension and profit sharing plans	Fewer than 5	$1.14B
State or municipal government entities	11	$2.70B

Compensation & activities

ADV Items 5E, 5G

Compensation

A percentage of assets under your management

Advisory activities

Portfolio management for businesses
Portfolio management for investment companies
Portfolio management for pooled investment vehicles
Portfolio management for individuals and/or small businesses

Custody

ADV Item 9

Firm Custody Cash: No
Firm Custody Assets: No
Firm Custody Clients: No
Firm Custody Securities: No
Related Person Custody Cash: No
Related Person Custody Assets: No
Related Person Custody Clients: No
Related Person Custody Securities: No

Disclosure events

ADV Item 11

This firm answered no to every Item 11 disclosure question in this filing.

Filed changes

Date	Field	From	To
Aug 12, 2026	Registration	—	APPROVED

Every value above is reproduced from this firm's Form ADV filing. Fields the firm left blank are shown as “Not reported” rather than filled in from other sources.