Westfield Capital Management Company LP

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Westfield Capital Management Company LP
CRD #146990
SEC #801-69413
CIK #0001177719
AUM 24.40 B (2026-03-11)
Employees 61 (28% Investors, 0% Brokers)
Fees
Minimum
Phone617-428-7100
AddressOne Financial Center
Boston, MA 02111
Source [IAPD] [EDGAR] [Website] [Twitter] [LinkedIn]
Total AUM ($B)
25201510502007201320202027
Fees and Compensation — Form ADV Part 2A (7/1/2026) [Brochure]
FEES AND COMPENSATION
Westfield has standard investment management fee schedules for each investment strategy. Westfield’s
policy is to charge fees to clients in accordance with the fee schedule in effect at the time the client enters
into an investment management relationship with Westfield. Fees are subject to modification and
negotiation based on factors (e.g., complexity of service level required, number of accounts for a related
group of clients) deemed by Westfield to be relevant.

The specific manner in which fees are charged by Westfield is established in a client’s written agreement
with Westfield. Westfield typically bills its fees on a quarterly basis in arrears based on the total market
value of the account on the last business day of the quarter. Clients may elect to be billed in advance or
arrears each calendar quarter. Clients may also elect to be billed directly or to authorize Westfield to debit
fees from client accounts. Unless specifically requested by the client, management fees are not pro-rated
for each capital contribution and withdrawal made during the applicable calendar quarter. Accounts
initiated or terminated during a calendar quarter will be charged a pro-rated fee.

Unless other terms are agreed upon, the investment management agreement between Westfield and the
client may be terminated at any time by either party by delivery of written notice. Client termination
notices must be acknowledged by Westfield before any asset transfers or liquidations will be effected.
Upon termination of any account, any prepaid, unearned fees will be promptly refunded, and any earned,
unpaid fees will be due and payable.

Westfield’s fees are exclusive of brokerage commissions, transaction fees, and other related costs and
expenses which shall be incurred by the client. Clients may incur certain charges imposed by custodians,
brokers, third-party investments and other third parties. Such fees may include but are not limited to, fees
charged by managers, custodial fees, deferred sales charges, odd-lot differentials, transfer taxes, wire
transfer and electronic fund fees, and other fees and taxes on brokerage accounts and securities
transactions. Mutual funds and exchange traded funds also charge internal management fees, which are
disclosed in a fund’s prospectus. Such charges, fees and commissions are exclusive of and in addition to
Westfield’s fee, and Westfield does not receive any portion of these commissions, fees, and costs.

The section on Brokerage Practices further describes the factors that Westfield considers in selecting or
recommending broker-dealers for client transactions and determining the reasonableness of their
compensation (e.g., commissions). Outlined below are Westfield’s standard fee schedules:

 Strategy                                               Standard Fee Schedule

 Large Cap Growth Equity Strategy                       0.65% per annum on the first $25 million
                                                        0.60% per annum on the next $25 million
                                                        0.55% per annum on the next $25 million
                                                        0.50% per annum on the balance
 Small Cap Growth Equity Strategy                       1.00% per annum on the first $25 million
                                                        0.75% per annum on the next $50 million
                                                        0.60% per annum on the balance

 Small/Mid Cap Growth Equity Strategy                 1.00% per annum on the first $25 million
                                                      0.75% per annum on the next $50 million
                                                      0.60% per annum on the balance
 Mid Cap Growth Equity Strategy                       0.80% per annum on the first $25 million
                                                      0.70% per annum on the next $50 million
                                                      0.60% per annum on the balance
 All Cap Growth Equity Strategy                       0.75% per annum on the first $25 million
                                                      0.65% per annum on the next $75 million
                                                      0.50% per annum on the balance
 Dividend Growth Equity Strategy                      0.75% per annum

 Select Growth Equity Strategy                        0.75% per annum

 Sustainable Growth Equity Strategy                   0.75% per annum

 Absolute Return Strategy                             1.00% per annum on net asset value plus 20% of
                                                      aggregate net profits
 Heath Care Strategy                                  0.65% per annum

The following strategies are no longer offered to new investors; however, Westfield still has client
accounts in each of the below strategies.

 Strategies No Longer Offered to New Investors Standard Fee Schedule

 All Cap Select Strategy                              0.75% per annum on the first $25 million
                                                      0.65% per annum on the next $75 million
                                                      0.50% per annum over $100 million

 Balanced Strategy                                    Individual Clients:
                                                      1.00% per annum on the first $5 million
                                                      0.50% per annum on amounts exceeding $5 million
                                                      0.25% per annum on fixed income

                                                      Institutional Clients:
                                                      0.75% per annum on the first $10 million
                                                      0.50% per annum on amounts exceeding $10
                                                      million
...
Account Minimums and Types of Clients — Form ADV Part 2A (7/1/2026) [Brochure]
TYPES OF CLIENTS
Westfield provides portfolio management services to high-net-worth individuals, corporate pension and
profit-sharing plans, Taft-Hartley plans, foundations, endowments, wrap fee and model delivery

programs, municipalities, registered mutual funds, pooled investment vehicles, private investment funds,
trust programs, sovereign funds, foreign funds such as SICAVs, limited partnerships, and other U.S. and
non-U.S. institutions.

Subject to Westfield’s (or General Partner’s) discretion, minimum account sizes apply and are dependent
on the product. More information on minimum account sizes and fee schedules can be found in Fees and
Compensation and Methods of Analysis, Investment Strategies and Risk of Loss.

METHODS OF ANALYSIS, INVESTMENT STRATEGIES AND RISK OF LOSS
Investment Strategies
Most of our investment strategies are managed by the Committee, collectively acting as portfolio
manager. Once an investment idea has been approved by the Committee for a product (or products), all
eligible client accounts within the product(s) will be allocated shares. There are some client accounts that
are managed by a portfolio manager. Investment decisions for these accounts do not require Committee
review or approval; however, trade orders for these individually managed client accounts are
communicated to the Committee via an email by the Trade Allocation Management team.

Our investment strategies are primarily focused on publicly traded domestic equity securities that are
exchange listed and have market quotations readily available. Typically, positions in de-listed securities
will not be initiated, but Westfield will selectively maintain a position that becomes de-listed if Westfield
believes the fundamental case for investment remains intact. Unless otherwise noted, our products do not
invest in derivatives, options, or privately held securities, and do not permit short selling. The Absolute
Return Strategy permits the usage of leveraging techniques, short selling, frequent trading, investments in
private securities, and investments in derivatives or options. As such, the Absolute Return Strategy does
enter into short positions in broad market index ETFs. Since Westfield is fundamentally a long-only
manager, allowing the Absolute Return Strategy to short the market can create a conflict with those client
accounts that are invested in the long-only strategies. Westfield has policies and procedures that place
certain restrictions and limits on short selling activity. Additionally, the Compliance team utilizes our
portfolio compliance system to monitor for these activities.

Under normal market conditions, our long-only equity products will typically not use a frequent trading
strategy. However, in certain market conditions, especially volatile ones, trading activity within products
may increase. When a frequent trading strategy is utilized, there will be increased brokerage and other
transaction costs, as well as taxes, associated with executing trades. Increased portfolio costs will affect
an account’s investment performance.

As previously discussed in the Investment Guidelines and Restrictions section, each of the products has its
own set of investment guidelines. Clients also may impose additional restrictions, as long as they are
reasonable and in writing, and have been reviewed and accepted by Westfield. Unless otherwise noted,
each of the strategies utilizes the following standard guidelines:

Position Limits
   • Typically, no equity position will exceed the greater of either 5% of the portfolio or 2% more than
       the security’s benchmark weight, both valued at market. Initial portfolio weightings are set by the

       Committee or portfolio manager and are typically 0.50% to 2% depending on the market
       capitalization of the product. (This limit does not apply to Dividend Growth Equity, Absolute
       Return, Select Growth Equity, and Health Care. Absolute Return has no limit.).

   •   Equity positions in Dividend Growth Equity will typically not exceed 10% of the portfolio. Initial
       portfolio weightings are typically 1.5% to 3%.

   •   Select Growth Equity will typically limit positions to 10% of the portfolio.

   •   Health Care will typically limit positions to 10% of the portfolio at the time of initial purchase.

Sector/Industry Limits
   • Sectors are limited to 20% of the total market value of the portfolio or 2.5 times the benchmark
       weight, whichever is greater. (Select Growth Equity, Absolute Return, and Health Care have no
       limits.)

   •   Dividend Growth Equity will generally limit industries to 25% of the portfolio.

Cash and Equivalents
   • Portfolios are expected to be fully invested at all times; cash is a residual of the investment process
      and will generally not exceed 10% of the total market value of the portfolios. (Select Growth
      Equity, Dividend Growth Equity, Absolute Return, and Health Care have no limits.)

Foreign Investments
   • Foreign securities exposure is limited to 15% of the portfolio and will consist of Depositary
       Receipts (e.g., ADRs) and non-U.S. incorporated stocks traded on a U.S. exchange and
       denominated in U.S. dollars. The limits do not apply to U.S. companies that transfer their
       registration to reduce U.S. tax liability. (This limit does not apply to Dividend Growth Equity,
       Select Growth Equity, Absolute Return and Health Care. Select Growth Equity, Absolute Return
       and Health Care have no limits)

   •   Dividend Growth Equity may hold up to 35% in Depositary Receipts (e.g., ADRs) and non-U.S.
       incorporated stocks traded on a U.S. exchange and denominated in U.S. dollars. The limits do not
       apply to U.S. companies that transfer their registration to reduce U.S. tax liability.

Large Cap Growth Equity Strategy: This strategy seeks long-term growth of capital by investing in a
...
Sector Form 13F Holdings Value ($B)
Nvidia Corp 1.2
Ascendis Pharma A/S 1.1
Apple Inc 0.9
Comfort Systems USA Inc 0.9
Fortress Transportation & Infrastructure Investors LLC 0.7
Microsoft Corp 0.7
Alphabet Inc 0.6
Alcoa Inc 0.5
GS Acquisition Holdings Corp 0.5
Amazon Com Inc 0.5
View All
Holdings by Sector ($B)
30241812602011201620212027
Type Form D Funds Date Sold AUM
Other Westfield Disruptive Innovation Fund LP [2021-03-08] 0.6 M 2.1 M
Filed 2024-02-15 (D/A) · Exemption 3(c)(1), 506(b), 3(c) · Remaining Indefinite · Duration More than one year · Net Assets Decline to Disclose
Other Westfield Health Care Fund LP [2021-03-08] 2.5 M 4.0 M
Filed 2022-02-08 (D/A) · Exemption 506(b), 3(c)(1) · Remaining Indefinite · Duration More than one year · Net Assets Decline to Disclose
Other Westfield Emerging Markets Small Cap Fund LP [2017-06-23] 10.0 M 11.5 M
Filed 2018-04-10 (D/A) · Exemption 506(b), 3(c)(1) · Remaining Indefinite · Duration More than one year · Net Assets Decline to Disclose
Other Westfield Global Dividend Growth Fund LP [2016-11-15] 2.3 M 1.2 M
Filed 2017-10-16 (D/A) · Exemption 506(b), 3(c)(1) · Remaining Indefinite · Duration More than one year · Net Assets Decline to Disclose
PE Westfield Capital SPV I LP [2015-10-15] 12.2 M 0.1 M
Offered $12,200,000 · Filed 2015-10-08 (D) · Exemption 506(b), 3(c)(1) · Minimum $200,000 · Duration One year or less · Revenue Decline to Disclose
Other Westfield Select Growth Equity LP [2014-03-18] 7.5 M 35.4 M
Filed 2025-07-31 (D/A) · Exemption 3(c)(1), 506(b), 3(c) · Remaining Indefinite · Duration More than one year · Net Assets Decline to Disclose
HF Westfield Absolute Return Fund Limited Partnership 2011-12-21 35.7 M
Westfield Dividend Growth Fund Limited Partnership [2011-12-21] 32.9 M 12.6 M
Filed 2012-03-26 (D) · Exemption 506, 3(c)(1) · Minimum $1,000,000 · Remaining Indefinite · Duration More than one year · Net Assets Decline to Disclose
Westfield Large Cap Growth Fund LP 2011-12-21 81.7 M
HF Westfield Life Sciences Fund II Limited Partnership [2011-12-21] 0.5 M
View All
AUM Breakdown Accounts AUM ($B)
By Client Type
(a) Individuals (other than high net worth individuals) 274 0.1
(b) Individuals (high net worth individuals) 505 1.3
(c) Banking or thrift institutions 0 0.0
(d) Investment companies 13 7.1
(e) Business development companies 0 0.0
(f) Pooled investment vehicles 15 3.7
(g) Pension and profit sharing plans 61 5.5
(h) Charitable organizations 127 1.4
(i) State or municipal government entities 38 4.2
(j) Other investment advisers 1 0.6
(k) Insurance companies 0 0.0
(l) Sovereign wealth funds and foreign official institutions 0 0.0
(m) Corporations or other businesses not listed above 84 0.4
(n) Other 0 0.0
Total 1,118 24.4
By Discretionary
Discretionary 1,118 24.4
Non-Discretionary 0 0.0
Total 1,118 24.4
By Non-United States Persons
Non-United States Persons 1.8
United States Persons 22.6
Total 1,118 24.4
Form D Directors Role # Filings # Firms 2011 - 2026
William Muggia Executive Officer 9 2
Westfield Partners LLC Executive Officer 6 2
Westfield Capital Management Company LP Executive Officer, Promoter 5 1
EDGAR Form CIK 2011 - 2026
13F-HR [0001177719]
3 [0001177719]
SC 13G [0001177719]
Form 13D/13G Filer Form 13D/13G Subject Filed
Westfield Capital Management Co LP IMAX Corp [2026-05-05]
Westfield Capital Management Co LP Bicycle Therapeutics PLC [2025-02-11]
Westfield Capital Management Co LP Flywire Corp [2025-02-11]
Westfield Capital Management Co LP Mural Oncology PLC [2024-01-10]
Westfield Capital Management Co LP Ascendis Pharma A/S [2023-02-02]
Westfield Capital Management Co LP Innoviva Inc [2022-02-01]
Westfield Capital Management Co LP Ironwood Pharmaceuticals Inc [2021-01-07]
Westfield Capital Management Co LP Sitime Corp [2020-01-07]
Westfield Capital Management Co LP Medicines Co /DE [2019-02-07]
Westfield Capital Management Co LP PTC Therapeutics Inc [2016-02-10]
View All
Firm Profile (Form ADV)
Discretionary AUM$14.1B
Clients12 (8 non-US)
ServesInstitutional, Retail
Fund TypesHedge Fund, Private Equity
Form 3/4/5 Subject 2011 - 2026
Westfield Capital Management Co LP
Liberty All Star Growth Fund Inc
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