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Griffin Black, LLC

Redwood City, CASEC-registered investment adviserCRD 134684

Filed as GRIFFIN BLACK, LLC

Griffin Black, LLC is an SEC-registered investment advisory firm in Redwood City, CA, registered since 2019, reporting $100 million to $500 million in regulatory assets under management in its Form ADV filing dated September 29, 2026.

6 years
registered since 2019
$355,515,601
assets under management
3 arrangements
Percentage of assets, Hourly and more
None
disclosure items (Item 11)

Quick answers

From the filing

How is Griffin Black, LLC compensated?

On its Form ADV (Item 5.E, October 2026), Griffin Black, LLC reports these compensation arrangements: a percentage of assets under its management; hourly charges; fixed fees (other than subscription fees).

How much does Griffin Black, LLC charge?

Its Form ADV Part 2A brochure dated March 25, 2026 states: Flat fee: $1,500 to $5,000 (set-up fee); Hourly rate: $350 an hour (Principal). Fees can differ by service and may be negotiable; the brochure is the complete statement.

Where is Griffin Black, LLC located?

Griffin Black, LLC's principal office is in Redwood City, CA, according to its Form ADV.

Is Griffin Black, LLC registered with the SEC or a state?

Griffin Black, LLC is an SEC-registered investment advisory firm, registered since 2019. Status as filed: Approved. CRD 134684.

How much does Griffin Black, LLC manage?

Griffin Black, LLC reports $355,515,601 in regulatory assets under management in its Form ADV filing dated September 29, 2026 (100% discretionary).

How have Griffin Black, LLC's assets and staff changed since 2021?

In the Form ADV data for Griffin Black, LLC: Regulatory assets under management: $147,531,179 in the October 2021 data and $355,515,601 in the October 2026 data, up 141%. Total employees: 6 in October 2021 and 9 in October 2026. Assets under management move with markets as well as with clients coming and going.

What types of clients does Griffin Black, LLC serve?

By number of clients on Form ADV Item 5.D: high net worth individuals (94); individuals (other than high net worth individuals) (77).

Which custodians does Griffin Black, LLC use?

Griffin Black, LLC's most recent Form ADV filing (Schedule D, Section 5.K(3)) lists Altruist Financial LLC and Pershing LLC as custodians holding 10% or more of its separately managed account assets.

Does Griffin Black, LLC report any disciplinary disclosures?

Reports no disclosure items on Form ADV Item 11. The detail of any item is on the firm's SEC record: https://adviserinfo.sec.gov/firm/summary/134684

What changed in Griffin Black, LLC's recent Form ADV filings?

In the October 2026 filing data: Updated its list of owners and control persons (Schedule A).

From the Form ADV filing

Every figure below is as the firm filed it with regulators, as of October 2026.

How the firm is compensated

Item 5.E
  • A percentage of assets under your management
  • Hourly charges
  • Fixed fees (other than subscription fees)

Item 5.E lists how the firm is compensated for its advice; Items 5.B, 6.A, and 7.A show whether its people or related companies can also earn commissions. Percentage of assets, fixed, hourly, subscription, and performance-based fees come from clients (a performance-based fee depends on investment results); commissions come with a sale or a trade, often from the company behind the product. How fees, commissions, and other arrangements differ

Fees and minimums

Form ADV Part 2A

The brochure lists different fees for different services or strategies; see the brochure for them.

Flat fee: $1,500 to $5,000 (set-up fee)

The brochure's wording
At the beginning of each engagement, Griffin Black will generally charge a flat, one-time set-up fee, ranging from $1,500 to $5,000.

Hourly rate: $350 an hour (Principal)

The brochure's wording
For ad hoc financial planning projects, we will bill the client for any out-of-pocket costs incurred, without mark-up, in addition to the hourly fees listed below. Principal $350/hour

As stated in the firm's Form ADV Part 2A brochure dated March 25, 2026. Fees can differ by service and may be negotiable; the brochure is the complete statement. Read the brochure on the SEC's IAPD site

Regulatory assets under management

Item 5.F
$355,515,601

$355,515,601 as of October 2026, filing dated September 29, 2026.

Discretionary: $355,515,601.Non-discretionary: $0.

A measure of scale, not skill or returns. Discretionary means the firm decides trades; non-discretionary means clients approve each one. What assets under management means

Who the firm serves

Item 5.D
Individuals (other than high net worth individuals)
Clients 77 Assets $35,437,157 (10%)
High net worth individuals
Clients 94 Assets $312,668,700 (88%)
Pension and profit sharing plans (but not the plan participants or government pension plans)
Clients Fewer than 5 Assets $3,458,423 (1%)
Charitable organizations
Clients Fewer than 5 Assets $3,883,022 (1%)
Other
Clients Fewer than 5 Assets $68,299 (0%)

A firm with no individual clients is an institutional manager even if it manages billions; the mix tells you whom the practice is built around.

Advisory services

Item 5.G
  • Financial planning services
  • Portfolio management for individuals and/or small businesses
  • Pension consulting services

Registration and firm details

Items 1, 2, 5
Registration
SEC-registered investment adviser. Status as filed: Approved.
Registered since
2019 (6 years)
Employees
Total: 9. Performing investment advisory functions: 5.
Wrap fee program participation
No.
Custodians (Schedule D, Section 5.K(3))

Custodians holding 10% or more of the firm's separately managed account assets, as filed on Form ADV (Schedule D, Section 5.K(3)). A custodian holds client assets; it does not endorse or supervise the firm. AdvisorCensus has no relationship with any custodian.

States registered or notice-filed
3 states or jurisdictions
CATXWA

SEC-registered investment advisers are examined by the SEC. SEC, state, and exempt registration

Disclosures

Item 11

None Reports no disclosure items on Form ADV Item 11. View on IAPD.

Item 11 asks about criminal, regulatory, and civil events involving the firm and its advisory personnel. The detail of each yes answer is on the IAPD record. Reading a firm's disclosures

Assets and staff over time

Items 5.A, 5.F
$148M 2021 $189M 2022 $187M 2023 $220M 2024 $271M 2025 $356M 2026
Data periodAssets under managementEmployeesFiling dated
October 2026$355,515,6019September 29, 2026
October 2025$270,853,3509March 27, 2025
October 2024$219,778,2668March 27, 2024
October 2023$186,548,5907March 27, 2023
October 2022$188,953,7387April 5, 2022
October 2021$147,531,1796March 25, 2021

Regulatory assets under management: $147,531,179 in the October 2021 data and $355,515,601 in the October 2026 data, up 141%.

Total employees: 6 in October 2021 and 9 in October 2026.

As filed in each year's data for the same month. Assets under management move with markets as well as with clients coming and going; they measure scale, not skill or returns. Most firms update these figures once a year.

Changes in the filing

Last 12 months
  1. October 2026
    • Updated its list of owners and control persons (Schedule A).
  2. April 2026
    • Employees performing advisory functions went from 4 to 5.
    • Regulatory assets under management went from $270,853,350 to $355,515,601 (+31%).
  3. December 2025
    • Registered or notice-filed in WA.

Compared month to month from the SEC's monthly adviser data and the state compilation feed. Owners and control persons are summarized, never named.

Websites listed on Form ADV

Item 1.I
griffinblack.com

Source: Form ADV, as of October 2026. Values appear as filed; a value the firm did not report is shown as "Not reported."

Cite this page

AdvisorCensus. Griffin Black, LLC (CRD 134684): Form ADV filing data as of October 2026.
https://advisorcensus.com/firm/griffin-black-llc-redwood-city-ca-134684