Firm profile

Portman Square Capital LLP

LONDON, United KingdomCRD 319011Registration Status: ApprovedEffective since October 6, 2022SEC # 801-126696Latest ADV May 14, 2026

Portman Square Capital Llp is an SEC registered investment adviser organized as a limited liability partnership with a primary office location in London, United Kingdom. Its latest Form ADV filing, dated May 14, 2026, reports $4.6B in regulatory assets under management, 27 employees, 1 office, and 4 accounts.

Assets Under Management
$4.6B
Employees
27
Offices
1 office
Total Clients
<5

Associated firm names

1 name listed
  • PORTMAN SQUARE CAPITAL LLP

Leadership

3 roles identified
CEOSutesh K. Sharma
CCOPetros E. Toseland
COOToby N. A. Lingard

Advisory services offered

1 types reported
Portfolio management for pooled investment vehicles

Fee models offered

2 types reported
Asset based fees
Performance-based fees

Offices & Contact

Primary office

LONDON, United Kingdom

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Primary office regionOther reported regions

Shading shows states and countries with reported offices. Cities are listed below; shading does not indicate service coverage.

United Kingdom

LONDONPrimary office

1 office records listed · 1 total offices reported. Counts can use different reporting dates. SEC filers may list only their largest 25 additional offices.

Contact and digital presence

ADV profile links

Regulatory Assets Under Management Breakdown

Total regulatory assets under management$4.6Bas of May 14, 2026
Discretionary100.0%
$4.6B
100% of total RAUM100.0%
Non-discretionary0.0%
$0
0% of total RAUM0.0%
All regulatory assets under management are discretionary.

Client Coverage Demographics

Top client segmentPooled Investment Vehicles represent 100.0% of total clients.
Top client categories% of clientsClients
1
Pooled Investment Vehicles
100.0%
4

Assets under management Growth by Quarter

Quarterly points use the latest ADV filing or SEC roster snapshot available in each quarter.

Total AUM$4.6B
Total Accounts4
10Y AUM Change+$3.9B (+560.8%)

Private Funds

Private funds reported by Portman Square Capital LLP

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Employee Growth by Quarter

Quarterly points use the latest ADV filing or SEC roster snapshot available in each quarter.

Total Employees27
Clients per Employee0:1
10Y Employee Change+4 (+17.4%)

Historical AUM and employee figures reflect available SEC Form ADV filings under this CRD. Filing gaps may reflect registration status changes, dormant periods, state registration periods, firm restructuring, or other reporting changes. Rialytix does not interpolate missing periods.


Ownership

Reported direct and indirect ownership ranges

Each range applies to a separate reported relationship and should not be added together.

Reported ownership ranges

Highlighted bands show the percentage range reported in Form ADV.

0%25%50%75%100%
SUTESH KUMAR SHARMADirect owner · Schedule AInterest in PORTMAN SQUARE CAPITAL LLP
50% to < 75%
YUSAF AMIN KHANDirect owner · Schedule AInterest in PORTMAN SQUARE CAPITAL LLP
10% to < 25%
TOBY NICHOLAS ALEXANDER LINGARDDirect owner · Schedule AInterest in PORTMAN SQUARE CAPITAL LLP
< 5%
ALISTAIR MARK HEATON-ARMSTRONGDirect owner · Schedule AInterest in PORTMAN SQUARE CAPITAL LLP
< 5%
BASTIEN (NMN) LUSSAULTDirect owner · Schedule AInterest in PORTMAN SQUARE CAPITAL LLP
< 5%
JULIEN CHARLES ATTALDirect owner · Schedule AInterest in PORTMAN SQUARE CAPITAL LLP
< 5%
ALEXANDER JOHN GABRIELDirect owner · Schedule AInterest in PORTMAN SQUARE CAPITAL LLP
< 5%

Bars represent the reported range at that individual ownership step, not an estimated percentage of the advisory firm. Indirect relationships may refer to intermediate entities rather than directly to Portman Square Capital LLP.

No indirect ownership information reported in the source’s Schedule B.

Reported ownership and control details

Form ADV · Filing date 2026-05-14 · Schedules A and B

8 entries
#Owner / person & roleInterest in entityReported interestControl personTitle / status acquiredSource
1SUTESH KUMAR SHARMACEO / PARTNER / MEMBERIndividualPORTMAN SQUARE CAPITAL LLP50% to less than 75%Code DYesCEO / PARTNER / MEMBER07/2021Schedule APDF page 24
2YUSAF AMIN KHANPARTNER / MEMBERIndividualPORTMAN SQUARE CAPITAL LLP10% to less than 25%Code BYesPARTNER / MEMBER09/2021Schedule APDF page 24
3TOBY NICHOLAS ALEXANDER LINGARDCOO / PARTNER / MEMBERIndividualPORTMAN SQUARE CAPITAL LLPLess than 5%Code NAYesCOO / PARTNER / MEMBER07/2021Schedule APDF page 24
4PETROS ELIAS TOSELANDCHIEF COMPLIANCE OFFICER / GENERAL COUNSELIndividualPORTMAN SQUARE CAPITAL LLPLess than 5%Code NAYesCHIEF COMPLIANCE OFFICER / GENERAL COUNSEL04/2023Schedule APDF page 24
5ALISTAIR MARK HEATON-ARMSTRONGPARTNERIndividualPORTMAN SQUARE CAPITAL LLPLess than 5%Code NAYesPARTNER04/2023Schedule APDF page 24
6BASTIEN (NMN) LUSSAULTPARTNERIndividualPORTMAN SQUARE CAPITAL LLPLess than 5%Code NAYesPARTNER04/2023Schedule APDF page 24
7JULIEN CHARLES ATTALPARTNERIndividualPORTMAN SQUARE CAPITAL LLPLess than 5%Code NAYesPARTNER04/2023Schedule APDF page 24
8ALEXANDER JOHN GABRIELPARTNERIndividualPORTMAN SQUARE CAPITAL LLPLess than 5%Code NAYesPARTNER07/2023Schedule APDF page 24

Less than 5% may include zero. Code F identifies a role without specifying a percentage. Reported interests may overlap and may not include every owner. Total indirect ownership is not calculated.

Compliance & Disclosures

Filing dated 5/14/2026 12:51:28 PM

Responses were selected by the RIA in its filing. Questions are shortened for readability; “you” refers to the reporting firm, and some questions also cover advisory affiliates.

RIA or supervised-person involvementThe RIA reported that none of the events below involve the firm or its supervised persons.RIA responseNo
AFelonies2 No

In the past ten years, have you or any advisory affiliate:

  • A1Been convicted of or pleaded guilty or no contest to a felony?No
  • A2Been charged with a felony?No
BMisdemeanors2 No

In the past ten years, have you or any advisory affiliate:

  • B1Been convicted of or pleaded guilty or no contest to a misdemeanor involving investments, an investment-related business, fraud, false statements or omissions, wrongful taking of property, bribery, perjury, forgery, counterfeiting, or extortion?No
  • B2Been charged with a misdemeanor of the kind listed above?No
CSEC or CFTC actions5 No

Has the SEC or CFTC ever:

  • C1Found you or an advisory affiliate made a false statement or omission?No
  • C2Found you or an advisory affiliate violated SEC or CFTC regulations or statutes?No
  • C3Found you or an advisory affiliate caused an investment-related business to have its authorization to do business denied, suspended, revoked, or restricted?No
  • C4Entered an order against you or an advisory affiliate in connection with investment-related activity?No
  • C5Imposed a civil money penalty on you or an advisory affiliate, or ordered you or an advisory affiliate to cease and desist from any activity?No
DOther regulatory actions5 No

Has any other federal regulatory agency, state regulatory agency, or foreign financial regulatory authority ever:

  • D1Found you or an advisory affiliate made a false statement or omission, or was dishonest, unfair, or unethical?No
  • D2Found you or an advisory affiliate violated investment-related regulations or statutes?No
  • D3Found you or an advisory affiliate caused an investment-related business to have its authorization to do business denied, suspended, revoked, or restricted?No
  • D4In the past ten years, entered an order against you or an advisory affiliate in connection with investment-related activity?No
  • D5Denied, suspended, or revoked your or an advisory affiliate’s registration or license, or otherwise prevented association with an investment-related business or restricted activities?No
ESelf-regulatory organization actions4 No

Has a self-regulatory organization or commodities exchange ever:

  • E1Found you or an advisory affiliate made a false statement or omission?No
  • E2Found you or an advisory affiliate violated its rules, other than a violation designated as a minor rule violation under an SEC-approved plan?No
  • E3Found you or an advisory affiliate caused an investment-related business to have its authorization to do business denied, suspended, revoked, or restricted?No
  • E4Disciplined you or an advisory affiliate by expulsion, suspension, barring association with other members, or otherwise restricting activities?No
FProfessional authorizations1 No
  • FHas an authorization to act as an attorney, accountant, or federal contractor granted to you or an advisory affiliate ever been revoked or suspended?No
GPending regulatory proceedings1 No
  • GAre you or any advisory affiliate now the subject of a regulatory proceeding that could result in a “Yes” answer to any part of C, D, or E?No
HCivil judicial actions and proceedings4 No

(1) Court actions

Has a domestic or foreign court:

  • H(1)(a)In the past ten years, enjoined you or an advisory affiliate in connection with investment-related activity?No
  • H(1)(b)Found that you or an advisory affiliate violated investment-related statutes or regulations?No
  • H(1)(c)Dismissed, pursuant to a settlement agreement, an investment-related civil action brought against you or an advisory affiliate by a state or foreign financial regulatory authority?No

(2) Pending civil proceedings

  • H(2)Are you or any advisory affiliate now the subject of a civil proceeding that could result in a “Yes” answer to any part of H(1)?No

* Metrics are based on the latest available data, including Form ADV filings, brochures, and relationship summaries pulled from the SEC IAPD, and may be subject to change. Learn what is included in the Rialytix data. Please refer to the firm's official disclosures for the most accurate information using their CRD number. This is not investment advice.