AdviserReport™

Your Searched Adviser

Broker

David R. Castellano

185 Asylum Street, Suite 2400, Hartford, CT

CRD #4193827

Registrations

Granite Harbor Securities, LLC

Registered Broker of a Broker-Dealer

Experience

17 yrs

2 firms

Your searched adviser’s firm, Granite Harbor Securities, LLC, is a broker-dealer — broker-dealers receive a BD designation rather than a Transparency Grade™. Learn why

How can this adviser earn revenue for their firm?

An individual’s registration dictates the revenue they can generate for their firm – via fees or commissions – but their personal compensation structure may vary based on how their employer approaches adviser compensation. This could alter their incentives, regardless of the registrations they may hold.

In their capacity as a broker (registered representative), this individual operates under FINRA’s Regulation Best Interest (Reg BI) standard, which requires recommendations to be in the client’s best interest at the time they are made. Compensation in this capacity is typically commission-based, meaning the broker earns revenue when you buy or sell investment products. A broker is not required to provide ongoing monitoring of your account unless you have separately agreed to it.

Professional History: Disclosures

Registered representatives are required to report certain events from their professional and personal history. The presence of disclosures on a broker’s record does not mean they have done anything wrong — many involve disputes that were denied, or matters resolved years ago. The list below shows the year, category, and current status of each reported event. For details on any specific event, see the broker’s BrokerCheck¹ record or ask the broker directly. View this broker’s full BrokerCheck record

Customer Dispute 2019 Settled

Your Searched Firm

Granite Harbor Securities, LLC

CRD #142736 · FINRA-Registered Broker-Dealer · Headquartered: Hartford, CT

Report generated April 28, 2026

View on FINRA BrokerCheck Form CRS

Grading Methodology

This firm is registered as a Broker-Dealer BD — in that capacity it will adhere to Regulation Best Interest.

Introducing broker: This firm accepts and transmits client orders but does not hold client assets or handle settlement directly. It relies on a separate clearing firm to process trades and custody securities on your behalf. In practice this means your account statements and confirmations may come from the clearing firm, and your assets are held there — not at this firm.

Registered Brokers

312

280 broker-dealer registration only
32 also registered as investment advisers
(counts are approximate)

Firm Statistics

Size: Medium
Type: Introducing broker

Regulatory

FINRA Member: 1998-06-15
Regulator: FINRA

Types of Business

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Mutual fund retailer

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Variable life insurance retailer

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General securities — retail

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Broker or dealer selling variable annuities

Possible Compensation Methods

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Commissions

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Trailing commissions / 12b-1 fees

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Sales loads

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Markups on principal trades

Also known as

Granite Harbor GH Securities

Transparency Grade™: Granite Harbor Securities, LLC received a grade of NOT APPLICABLE

This report does not assign a letter grade for this firm. Broker-dealer firms operate under a different regulatory standard than investment advisers — the regulatory filings broker-dealers submit are not structured the same way as the filings used to grade investment advisers. Applying a single grading scale to both firm types would force a comparison between structures that are not directly comparable.

Instead, this report provides structural context — how the firm is registered, how it and its representatives can be compensated, and what its disclosure history looks like.

Grading Methodology

Firm Size

Small

Medium

Large

~89%

~7%

~4%

Compensation Structure

Broker-dealers can earn revenue in several ways. What are some of the methods this firm can use to earn revenue?

Revenue Model Commission-Based

Fee Calculator

Broker-dealer compensation is primarily transaction-based — the firm earns revenue when trades are made or products are sold. Some revenue sources appear as explicit line items on your trade confirmations. Others are embedded in product pricing and require careful reading of disclosure documents.

The methods listed below are derived from the business activities this firm discloses to FINRA. Each is a compensation method that activity can generate — not a confirmation that this firm uses it. Ask your broker directly which of these apply to your account.

Form CRS available. This firm has filed a Client Relationship Summary (Form CRS) which describes the firm’s services, fees, conflicts of interest, and standards of conduct in plain language. Download Form CRS ↗

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Commissions

A direct charge each time you buy or sell a security. The broker earns more as transaction volume increases, which is a conflict to be aware of when a broker recommends trading activity.

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Trailing commissions / 12b-1 fees

Ongoing payments embedded in certain mutual funds and variable products. They are paid out of fund assets — you do not see them as a separate charge — and can make one product more profitable to the broker than an otherwise comparable one.

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Sales loads

An up-front or deferred charge on certain mutual funds and annuities, a portion of which compensates the selling broker.

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Markups on principal trades

When the firm sells you a security out of its own inventory, its compensation is built into the price rather than charged as a visible commission.

Understanding This Relationship

When you work with a broker or brokerage firm, the legal relationship is different from working with a Registered Investment Adviser (RIA). Understanding the distinction matters — it affects the standard of care you receive, how your broker is compensated, and what obligations they have to you.

Regulation Best Interest (Reg BI) — the standard that applies here. When a broker makes a recommendation, it must be in your best interest at the time it is made. Your broker must consider your investment profile, disclose conflicts of interest, and have a reasonable basis for any recommendation. A broker is not required to eliminate conflicts — they are required to disclose and mitigate them.

Disclosures

This firm has 3 regulatory actions and 5 customer arbitrations on record with FINRA. A disclosure does not necessarily indicate wrongdoing — some are resolved in the firm’s favor, and others may reflect historical matters that have since been addressed.

The counts below are sourced from FINRA BrokerCheck. Review the full record for detail on each disclosure.

Regulatory

Arbitration

Civil

Criminal

About arbitration records: FINRA arbitration filings represent formal customer complaints that reached the arbitration process — a level of specificity not available in standard investment adviser filings. This firm has 5 arbitration records on file. Review the full detail on BrokerCheck to understand the nature and outcome of each matter.

Affiliate disclosures: 1 disclosure is associated with non-registered affiliates of this firm. These are separate from the firm’s own disclosure record and relate to affiliated entities. See BrokerCheck for detail.

View full disclosure record on FINRA BrokerCheck ↗

Disclosure data in this report is sourced from FINRA BrokerCheck and was compiled on the report generation date shown above.

About This Report

This report is generated from publicly available regulatory filings submitted by broker-dealer firms and their registered representatives. The primary source is FINRA BrokerCheck (brokercheck.finra.org), the public-facing system operated by the Financial Industry Regulatory Authority that makes broker-dealer filings available to investors.

Broker-dealer firms operate under a different regulatory standard than investment advisers — Regulation Best Interest rather than the fiduciary standard — and the regulatory filings broker-dealers submit are not structured the same way as the filings of Registered Investment Advisers. This report provides structural context — how the firm is registered, how it and its representatives can be compensated, and what its disclosure history looks like. The full methodology, including why broker-dealer firms are not graded, is available at adviserreport.com/methodology.

A note on data currency. The firm-level data shown in this report is drawn from FINRA BrokerCheck and reflects information available at the time the report was generated. Broker-dealers amend their filings when their information materially changes, and BrokerCheck reflects these amendments as they are processed — meaning a recent change may not yet appear here. The most current public view of any broker-dealer firm’s record is available at brokercheck.finra.org.

FINRA BrokerCheck Disclosure. Broker-dealer and registered representative data contained in this report, including individual adviser professional history and disclosure details (if any), is sourced from FINRA BrokerCheck (brokercheck.finra.org). Use of BrokerCheck data is subject to FINRA’s Terms of Use. The factual content of BrokerCheck data has not been altered or modified. If you believe any BrokerCheck-sourced information in this report contains an error, please contact us at support@adviserreport.com so that the error may be corrected or referred to FINRA. BrokerCheck data in this report was compiled on the report generation date shown above.