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David J. Mammina

KESTRA ADVISORY SERVICES
PORT JEFFERSON, NY 11777
Some features on this profile are disabled
CRD#: 5290574
DM

Professional summary


David Joseph Mammina, CFP® is a registered financial advisor currently at KESTRA ADVISORY SERVICES, LLC located in Port Jefferson, New York and GANIM PRIVATE WEALTH located in Shelton, Connecticut.

David is registered as an IAR (Investment Advisor Representative) and RR (Registered Representative) and started their career in finance in 2007. David has worked at 6 firms and has passed the Series 66, SIE and Series 7 exams.

top-8-questions

Question & Answer


Are you a "fiduciary"?
Yes

Aliases


None

Other business activities


Outside business activity is any business or activity undertaken by an advisor that is outside the scope of their relationship with their firm (e.g., consulting services, real estate, freelance work, teaching, etc.). Investors should stay informed about these activities to ensure no conflicts of interest.
BUSI NAME: COASTLINE WEALTH MANAGEMENT POS: Financial Advisor NOB: Registered rep activities through Kestra Investment Services INV REL: Yes NUMBER OF HOURS: 160 SECURITIES TRADING HOURS: 132 START DATE: 03/23/2015 ADDRESS: 1303 Main Street, Port Jefferson NY 11777 DESC: Sales BUSI NAME: Kestra Advisory Services, LLC INV REL: Yes Address: 5707 Southwest Parkway Building 2, Suite 400 Austin TX 78735 NOB of Business: Investment Advisory services through Kestra Advisory Services, LLC POS, Title or Relationship: Investment Advisor Representative Start Date: 4/4/2016 Hours per month: Up to 100% (0 to 160 hours) Hours per month during trading hours: Up to 100% (0 to 160 hours) Duties: Investment advisory services BUSI NAME: DMSZ, Inc. INV REL: Yes Address: 12 Meroke Lane Rocky Point NY 11778 NOB of Business: Consulting POS, Title or Relationship: President Start Date: 9/17/2018 Hours per month: 0% - 10% (0 - 16 hours) Hours per month during trading hours: 0% - 10% (0 - 14 hours) Duties: Consulting BUSI NAME: Rocky Point Jewelers, LLC INV REL: No Address: 29 Rocky Point - Yaphank Rd Rocky Point NY 11778 NOB of Business: Other Other/None of the Above Retail Sales POS, Title or Relationship: Manager Start Date: 8/17/2019 Hours per month: 0% - 10% (0 - 16 hours) Hours per month during trading hours: 0% - 10% (0 - 14 hours) Duties: Manage employees at one location, once per month. BUSI NAME: 1303 Main, LLC INV REL: No Address: 1303 Main Street Port Jefferson NY 11777 NOB of Business: Real Estate POS, Title or Relationship: Member Start Date: 8/15/2020 Hours per month: 0% - 10% (0 - 16 hours) Hours per month during trading hours: 0% - 10% (0 - 14 hours) Duties: Landlord BUSI NAME: Coastline Holdings Group, LLC INV REL: Yes Address: 414 Main Street, Suite 302 Port Jefferson NY 11778 NOB of Business: Registered Rep Activities through Kestra Investment Services, LLC using a DBA name; Investment Advisory services through an independent outside RIA POS, Title or Relationship: Member Start Date: 12/28/2020 Hours per month: 51% - 60% (81 - 96 hours) Hours per month during trading hours: 41% - 50% (57 - 70 hours) Duties: Management, investment advice, and financial planning BUSI NAME: GFS Wealth Management Advisors, Inc. INV REL: Yes Address: 2 Enterprise Dr Suite 305 Shelton CT 06484 NOB of Business: Investment Advisory services through an independent outside RIA POS, Title or Relationship: Partner and Financial Advisor Start Date: 4/1/2021 Hours per month: 11% - 20% (17 - 32 hours) Hours per month during trading hours: 11% - 20% (15 - 28 hours) Duties: Manage current client relationships BUSI NAME: 7 Claw LLC; Member; INV REL: Yes; 1303 Main Street Port Jefferson NY 11777 USA; Real Estate Investment; equal member duties; 2022-05-02; Hours per month devoted to business during trading hours: 0; Hours per month devoted to business outside trading hours: 5; Percentage of total yearly compensation expected to be derived from the business: 1; BUSI NAME: SPRINT MY RIDE LLC POS: Member NOB: Limo/Transportation INV REL: No NUMBER OF HOURS: 5 SECURITIES TRADING HOURS: 0 START DATE: 07/08/2022 ADDRESS: 1303 Main Street, Port Jefferson NY 11777 DESC: Bookkeeping BUSI NAME: BATTALINI & COMPANY, P.C. SUPERCPA POS: Partner NOB: Tax/Accounting/CPA INV REL: No NUMBER OF HOURS: 5 SECURITIES TRADING HOURS: 5 START DATE: 02/01/2023 ADDRESS: 1049 Lancaster Ave, Berwyn PA 19312 DESC: Chief Financial Officer BUSI NAME: COASTLINE WM PARENT LLC POS: Member NOB: Holding Company INV REL: No NUMBER OF HOURS: 0 SECURITIES TRADING HOURS: 0 START DATE: 10/07/2024 ADDRESS: 1303 Main Street, Port Jefferson NY 11777 DESC: All applicable member duties BUSI NAME: CWM MERGER SUB LLC POS: Member NOB: Investment advisory services through an independent outside RIA INV REL: Yes NUMBER OF HOURS: 88 SECURITIES TRADING HOURS: 63 START DATE: 10/07/2024 ADDRESS: 1303 Main Street, Port Jefferson NY 11778 DESC: Management, investment advice, and financial planning

Blog Corner


CRS (Client Relationship Summary) - RIA


Click below to view David Joseph Mammina's CRS (Customer Relationship Summary).
CRS (Customer Relationship Summary)

Certified licenses


Advisors may have various certifications and credentials from different organizations. AdvisorCheck highlights these seven certifications - AIF®, CFP®, ChFC®, CFA, CLU®, CIMA®, CPWA®
CFP®

Start date: 2010

Experience


Current

April 26, 2016 - Present

KESTRA ADVISORY SERVICES, LLC

Office #1: 414 Main Street Suite 302, Port Jefferson, NY 11777
RIA
CRD#: 283330
PORT JEFFERSON, NY
Current

April 8, 2021 - Present

GANIM PRIVATE WEALTH

Office #1: 2 Enterprise Drive Suite 305, Shelton, CT 06484
RIA
CRD#: 285679
Shelton, CT
Current

April 6, 2015 - Present

KESTRA INVESTMENT SERVICES, LLC

Office #1: 1303 Main Street, Port Jefferson, NY 11777
BD
CRD#: 42046
Port Jefferson, NY
Past

April 7, 2015 - September 22, 2016

KESTRA INVESTMENT SERVICES, LLC

RIA
CRD#: 42046
AUSTIN, TX
Past

October 14, 2010 - February 10, 2014

CHARLES SCHWAB & CO., INC.

RIA
CRD#: 5393
HUNTINGTON, NY
Past

October 14, 2010 - February 10, 2014

CHARLES SCHWAB & CO., INC.

BD
CRD#: 5393
HUNTINGTON, NY
Past

July 8, 2008 - June 11, 2010

WELLS FARGO CLEARING SERVICES, LLC

RIA
CRD#: 19616
SMITHTOWN, NY
Past

July 8, 2008 - June 11, 2010

WELLS FARGO CLEARING SERVICES, LLC

BD
CRD#: 19616
SMITHTOWN, NY
Past

August 9, 2007 - July 3, 2008

AMERIPRISE FINANCIAL SERVICES, LLC

BD
CRD#: 6363
ISLANDIA, NY

Primary Firm SEC Registration


This SEC-registered firm can serve clients nationwide. Some states may require the firm to submit a notice filing if the firm has more than 5 clients or a physical office there. You can view these state-level filings under the section titled "State Registrations and Notice Filings".
KA
KESTRA ADVISORY SERVICES, LLC
KESTRA ADVISORY SERVICES, LLC | NFP ADVISOR SERVICES LLC

CRD#: 283330 / SEC#: 801-56126

RIA
Registered Investment Advisory firm - (12/31/1998 Approved)

State Registrations and Notice Filings


Listed states reflect where the advisor is authorized to serve clients under state regulations.

IAR
means the advisor is registered as an Investment Advisor Representative in this state and is authorized to provide investment advice to clients there.
RR
indicates the advisor is registered as a Registered Representative in this state, allowing them to offer securities such as stocks, bonds, and mutual funds through a broker-dealer.

Visual representation of state registrations

RR
Alabama
(3/11/2019)
RR
Arizona
(7/13/2016)
RR
California
(4/12/2016)
RR
Colorado
(3/11/2019)
RR
Connecticut
(2/20/2019)
IAR
Connecticut
(4/8/2021)
RR
Delaware
(10/21/2015)
RR
District of Columbia
(3/11/2019)
RR
Florida
(4/6/2015)
RR
Georgia
(10/16/2015)
RR
Idaho
(6/29/2021)
RR
Illinois
(9/3/2015)
RR
Indiana
(3/11/2019)
RR
Louisiana
(8/19/2025)
RR
Maine
(10/14/2025)
RR
Maryland
(3/11/2019)
RR
Massachusetts
(10/5/2018)
RR
Michigan
(3/2/2018)
RR
Minnesota
(3/11/2019)
RR
Nebraska
(3/11/2019)
RR
Nevada
(6/1/2017)
RR
New Jersey
(4/6/2015)
RR
New York
(4/6/2015)
IAR
New York
(4/8/2021)
RR
North Carolina
(11/17/2016)
RR
Ohio
(3/11/2019)
RR
Pennsylvania
(4/6/2015)
RR
Rhode Island
(3/11/2019)
RR
South Carolina
(3/11/2019)
RR
Tennessee
(8/19/2025)
RR
Texas
(5/12/2015)
IAR
Texas
(10/16/2023)
RR
Utah
(3/11/2019)
RR
Virginia
(10/28/2015)
RR
Washington
(10/16/2015)
RR
West Virginia
(9/12/2025)
RR
Wisconsin
(8/28/2025)

Exams


State Security Law Exam
RR
IAR
Series 66
Date: 9/25/2007
Uniform Combined State Law Examination
General Industry/Product Exam
General Industry/Product Exam
SRO Registrations
RR
FINRA

Current Firm


KA
KESTRA ADVISORY SERVICES, LLC
KESTRA ADVISORY SERVICES, LLC | NFP ADVISOR SERVICES LLC

CRD#: 283330 / SEC#: 801-56126

RIA
Registered Investment Advisory firm - (12/31/1998 Approved)
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Contact information


Main Address
5707 Southwest Parkway Building 2, Suite 400, Austin, TX 78735
Mailing Address
Phone number
(844) 553-7872
Established
Firm type
Fiscal year end
# of Employees
1,299

SEC notice filing (53 States and Territories)


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Documents


Customer Relationship Summary (CRS / SEC)Latest Form ADV

Part 2 Brochures

KESTRA ADVISORY SERVICES, LLC BROCHURE (RETAIL CLIENTS) (10/21/2025)

Regulatory assets under management


Total Number of Accounts155,482
AUM (Assets Under Management)$ 60,174,309,829

Accountant surprise examination report


Filing DateForm ADV-E CoverForm ADV-E Report
12/23/2024
Cover Page
10/20/2023
12/21/2022

Red Flags


Disclosures can be potential red flags, including customer disputes, regulatory fines, employer terminations, bankruptcies, judgments, liens, or certain criminal activities.

Check for any disclosures as part of your thorough research when choosing an advisor.

Company Information


KESTRA ADVISORY SERVICES, LLC

CRD#: 283330Port Jefferson, NY 11777

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