Pennington Partners & Co. provides financial planning, portfolio management for individuals and small businesses, portfolio management for pooled vehicles, and selecting other managers. Financial planning was provided to 26–50 clients last fiscal year. The firm advises 10 private funds.
Pennington Partners & Co. reports 112 clients. They include 102 high-net-worth individuals and 10 pooled investment vehicles. Of its assets, 47.8% ($2.43B across 968 accounts) are managed with discretion; $2.66B across 58 accounts are not.
| Client type | Clients | Assets |
|---|---|---|
| High-net-worth individuals | 91% | 90% |
| Pooled investment vehicles | 9% | 10% |
Client breakdown and activity details
| Client type | Clients | Regulatory AUM | AUM share | Avg. per client |
|---|---|---|---|---|
| High-net-worth individuals | 102 | $4.6B | 90.4% | $45.1M |
| Pooled investment vehicles | 10 | $487M | 9.6% | $48.7M |
| Total | 112 | $5.09B | 100% | $45.4M |
- Clients
- 102
- Regulatory AUM
- $4.6B
- AUM share
- 90.4%
- Avg. per client
- $45.1M
- Clients
- 10
- Regulatory AUM
- $487M
- AUM share
- 9.6%
- Avg. per client
- $48.7M
Total
- Clients
- 112
- Regulatory AUM
- $5.09B
- AUM share
- 100%
- Avg. per client
- $45.4M
- Clients outside the U.S.
- 0%
- Clients advised without assets under management last fiscal year
- 0
- Private funds advised
- 10
- Financial planning clients last fiscal year
- 26–50
Pennington Partners & Co. charges up to 1.50% a year for its Investment Advisory Services Fees. The fee is negotiable and has a $100,000 annual minimum. The brochure also prices 2 other services, listed under fee details.
Fee details and sources
Other fees
- Bookkeeping and Bill Payment Services
- Bookkeeping and bill payment services are generally subject to an additional fee as agreed with each client.
- Family Office Services and Business Strategy Consulting
- Consulting is priced by project as a fixed fee or hourly; ongoing family office services are generally included in the annual advisory fee, and extraordinary services are billed as negotiated.
Brian Gaister owns 50% to 75% of Pennington Partners & Co.. Brian Gaister is CEO; the leadership team includes Chief Compliance Officer Guy Scott. It has 36 employees, 10 of them in advisory roles.
Leadership
- Brian GaisterChief Executive Officer / Managing Member
- Guy ScottChief Compliance Officer
- Samuel RoseMember
Rodd MacklinMember
Investment adviser representatives
11 representatives listed in the SEC register as of 9 October 2026.
- Robert Kent Andrews
- Megan Ann Bleil
- Longhe Cao
- Meredith Lynn Farber
- William Lawrence Halkyard
- Keith Kellum
- William Joseph Lowrie
- Jacob Reinhardt
- Charles Stuart Sheain III
Staff
- 36 employees
- 10 in advisory functions
- 7 soliciting firms
- Owns 50% to 75% of Pennington Partners & Co., LLC
Brian Gaister
Control person · since January 2016
- Owns 10% to 25% of Pennington Partners & Co., LLC
Rodd Macklin
Control person · since February 2016
Pennington Partners & Co.’s regulatory assets grew 4.6× from $1.11B (April 2021) to $5.09B (April 2026); clients rose from 52 to 112 and employees from 8 to 36.
Figures from each annual filing
| Filed | Regulatory AUM | Clients | Employees | Offices |
|---|---|---|---|---|
| April 2026 | $5.09B | 112 | 36 | 2 |
| May 2025 | $3.95B | 221 | 27 | 2 |
| July 2024 | $2.97B | 67 | 19 | 2 |
| May 2023 | $1.7B | 63 | 16 | 2 |
| April 2022 | $1.74B | 62 | 13 | 1 |
| April 2021 | $1.11B | 52 | 8 | 1 |
Besides its headquarters, Pennington Partners & Co. has 1 office, with 2 listed addresses in Maryland and Texas.
Maryland · 1 listed address
- 7500 Old Georgetown Road, Suite 705, BethesdaHQ
Texas · 1 listed address
- 1885 St James Place, Houston
Other business names
Pennington Partners & Co. has reported 2 other business names to the SEC.
- Pennington Partners F1 LLC
- Pennington-TX, LLC
Contact and registration details
- Legal name
- Pennington Partners & Co., LLC
- Headquarters
- 7500 Old Georgetown Road, Suite 705, Bethesda, MD 20814
- Website
- penningtonpartners.co
- Phone
- 202-370-6435
- SEC file
- 801-107210
- Structure
- Delaware LLC
- Fiscal year end
- December
Pennington Partners & Co. uses Fidelity ($440M, 60%) and Charles Schwab ($295M, 40%) as custodians for its separately managed accounts. Pennington Partners & Co. has custody of $566M in client assets for 61 clients.
- Charles SchwabCharles Schwab & Co., Inc. · Westlake, TX · $295M40%
- FidelityFidelity Investments · Boston, MA · $440M60%
Pennington Partners & Co.’s reported 13F holdings for the quarter ended 30 June 2026 total $312M across 131 positions; the largest are Vanguard Index Fds (17.7%), iShares TR (15.0%) and EA Series Trust (13.4%).
What the accounts hold
- Other100%
- Pennington actively advises one family on their privately held interests in a series of companies.100%
Reported 13F holdings
- $312M
- Reported 13F value
- 131
- Positions
- 65.3%
- In the 10 largest
- +6.9%
- Value vs. prior quarter
- Vanguard Index Fds · Total Stk Mkt17.7%
- iShares TR · Russell 3000 ETF15.0%
- EA Series Trust · Alpha Arch 1-313.4%
- Vanguard Scottsdale Fds · Vng Rus3000idx6.8%
- Janus Detroit Str TR · Hendrson Aaa CL2.6%
- iShares TR · Core S&P Ttl Stk2.5%
- Alphabet Inc. · Cap Stk CL C2.1%
- Apple Inc.2.1%
- iShares TR · MSCI Acwi ETF1.6%
- Lineage Inc.1.6%
Together, the ten largest are 65.3% of reported value.
How many clients does Pennington Partners & Co. have?
Pennington Partners & Co. has 112 clients and manages $5.09 billion for them, as of April 2026. They include 102 high-net-worth individuals and 10 pooled investment vehicles.
Source: Form ADV Part 1A, Items 5.D and 5.F, filed 6 April 2026
What services does Pennington Partners & Co. offer?
Pennington Partners & Co. provides financial planning, portfolio management for individuals and small businesses, portfolio management for pooled vehicles, and selecting other managers.
Source: Form ADV Part 1A, Item 5.G, from the SEC's 2 October 2026 data file
How much does Pennington Partners & Co. charge?
Pennington Partners & Co. charges up to 1.50% a year for its Investment Advisory Services Fees. The fee is negotiable and has a $100,000 annual minimum.
Source: PENNINGTON PARTNERS ADV PART 2A, filed 31 March 2026
Which custodians does Pennington Partners & Co. use?
Pennington Partners & Co.’s separately managed account assets are held at Fidelity Investments (Boston, MA), with $440M and Charles Schwab & Co., Inc. (Westlake, TX), with $295M. Only custodians holding at least a tenth of those assets are named.
Source: Form ADV Part 1A, Schedule D, Section 5.K.(3), filed 6 April 2026
How many financial advisors does Pennington Partners & Co. have?
Pennington Partners & Co. has 0 investment adviser representatives registered with state securities authorities, out of 36 employees, and 10 perform investment advisory functions. None are registered representatives of a broker-dealer or licensed insurance agents.
Source: Form ADV Part 1A, Items 5.A and 5.B, from the SEC's 2 October 2026 data file
What does Pennington Partners & Co. invest in?
At the end of its last fiscal year, Pennington Partners & Co.’s separately managed accounts held 100% other. The 100% other category is described as: Pennington Actively Advises One Family on Their Privately Held Interests in A Series of Companies. It advises 10 private funds.
Source: Form ADV Part 1A, Items 5.K.(1) and 7.B, from the SEC's 2 October 2026 data file
Who owns Pennington Partners & Co.?
Pennington Partners & Co.’s direct owners are Brian Gaister (50% to 75%) and Rodd Macklin (10% to 25%).
Source: Form ADV Part 1A, Schedules A and B, filed 6 April 2026
How does Pennington Partners & Co. get paid?
Pennington Partners & Co. is paid through a percentage of assets under management, hourly charges, fixed fees and performance-based fees. Its Form ADV lists no commissions among how it is paid.
Source: Form ADV Part 1A, Item 5.E, from the SEC's 2 October 2026 data file
Is Pennington Partners & Co. registered with the SEC?
Yes, Pennington Partners & Co. has been registered with the SEC as an investment adviser since 28 January 2016. Its CRD number is 282688 and its SEC file number is 801-107210.
Source: Form ADV Part 1A, Item 1, filed 6 April 2026; IAPD firm record
How do I contact Pennington Partners & Co.?
Pennington Partners & Co.’s main office is at 7500 Old Georgetown Road, Suite 705, Bethesda, MD 20814. Its phone number is 202-370-6435. Its website is penningtonpartners.co.