Prophase Labs Inc
PRPH0.615USD
-0.072-10.48%
Close 12/24, 13:00（ET）Quotes delayed by 15 min
2.55MMarket Cap
LossP/E TTM
More Details of Prophase Labs Inc Company
ProPhase Labs, Inc. is a biotech, genomics, and consumer products company. The Company is engaged in providing whole genome sequencing solutions, diagnostic development, such as its potentially life-saving test for the early detection of esophageal cancer and a direct-to-consumer marketing platform for OTC dietary supplements. It develops, manufactures, and commercializes health and wellness solutions. Its Diagnostic services segment provides diagnostic information services to a range of customers in the United States, including health plans, third-party payers and government organizations. Its Consumer products segment is engaged in the research, development, manufacture, distribution, marketing and sale of OTC consumer healthcare products and dietary supplements in the United States and provides personal genomics products and services. The Company also develops and markets dietary supplements under the TK Supplement brand, which includes Legendz XL and Triple Edge XL.
Prophase Labs Inc Info
Ticker SymbolPRPH
Company nameProphase Labs Inc
IPO dateJan 16, 1984
CEOKarkus (Ted William)
Number of employees96
Security typeOrdinary Share
Fiscal year-endJan 16
Address711 Stewart Ave, Suite 200
CityNEW YORK
Stock exchangeNASDAQ OMX - NASDAQ BASIC
CountryUnited States of America
Postal code11530
Phone12153450919
Websitehttps://www.prophaselabs.com/
Ticker SymbolPRPH
IPO dateJan 16, 1984
CEOKarkus (Ted William)
Company Executives of Prophase Labs Inc
Name
Name/Position
Position
Shareholding
Change
Mr. Ted William Karkus
Mr. Ted William Karkus
Chairman of the Board, Chief Executive Officer
Chairman of the Board, Chief Executive Officer
3.22M
--
Dr. Louis Gleckel, M.D.
Dr. Louis Gleckel, M.D.
Independent Director
Independent Director
103.84K
--
Ms. Carolina Abenante, Esq.
Ms. Carolina Abenante, Esq.
Independent Director
Independent Director
--
--
Mr. Steven M. Plumb, CPA
Mr. Steven M. Plumb, CPA
Fractional Chief Financial Officer
Fractional Chief Financial Officer
--
--
Mr. Warren Hirsch, CPA
Mr. Warren Hirsch, CPA
Independent Director
Independent Director
--
--
Name
Name/Position
Position
Shareholding
Change
Mr. Ted William Karkus
Mr. Ted William Karkus
Chairman of the Board, Chief Executive Officer
Chairman of the Board, Chief Executive Officer
3.22M
--
Dr. Louis Gleckel, M.D.
Dr. Louis Gleckel, M.D.
Independent Director
Independent Director
103.84K
--
Ms. Carolina Abenante, Esq.
Ms. Carolina Abenante, Esq.
Independent Director
Independent Director
--
--
Mr. Steven M. Plumb, CPA
Mr. Steven M. Plumb, CPA
Fractional Chief Financial Officer
Fractional Chief Financial Officer
--
--
Mr. Warren Hirsch, CPA
Mr. Warren Hirsch, CPA
Independent Director
Independent Director
--
--
Revenue Breakdown
Relevant data have not been disclosed by the company yet.
Relevant data have not been disclosed by the company yet.
By Business
By Region
Relevant data have not been disclosed by the company yet.
Shareholding Stats
Updated: Sun, Nov 16
Updated: Sun, Nov 16
Shareholders
Shareholder Types
Shareholders
Shareholders
Proportion
Karkus (Ted William)
5.57%
Sykon Capital LLC
1.12%
The Vanguard Group, Inc.
0.92%
Susquehanna International Group, LLP
0.69%
Geode Capital Management, L.L.C.
0.53%
Other
91.17%
Shareholders
Shareholders
Proportion
Karkus (Ted William)
5.57%
Sykon Capital LLC
1.12%
The Vanguard Group, Inc.
0.92%
Susquehanna International Group, LLP
0.69%
Geode Capital Management, L.L.C.
0.53%
Other
91.17%
Shareholder Types
Shareholders
Proportion
Individual Investor
5.75%
Investment Advisor
4.32%
Investment Advisor/Hedge Fund
0.70%
Hedge Fund
0.10%
Research Firm
0.08%
Venture Capital
0.05%
Other
88.99%
Institutional Shareholding
Updated: Wed, Oct 1
Updated: Wed, Oct 1
Reporting Period
No. of institutions
Shares Held
Proportion
Change
2025Q3
86
3.04M
7.33%
-2.51M
2025Q2
91
7.80M
18.77%
+525.30K
2025Q1
95
8.38M
29.57%
+1.62M
2024Q4
97
6.02M
20.15%
-197.61K
2024Q3
101
5.16M
20.53%
-1.27M
2024Q2
102
5.11M
20.47%
-1.25M
2024Q1
100
5.62M
31.27%
-1.27M
2023Q4
102
5.60M
32.69%
-985.39K
2023Q3
105
5.94M
34.65%
-718.97K
2023Q2
102
6.16M
36.72%
-636.57K
View more
Shareholder Activity
Name
Shares Held
Proportion
Change
Chg %
Date
Karkus (Ted William)
3.22M
7.74%
--
--
Apr 29, 2025
Sykon Capital LLC
644.79K
1.55%
+644.79K
--
Jun 30, 2025
The Vanguard Group, Inc.
408.27K
0.98%
--
--
Jun 30, 2025
Susquehanna International Group, LLP
102.02K
0.25%
+28.00K
+37.84%
Jun 30, 2025
Geode Capital Management, L.L.C.
259.06K
0.62%
+31.37K
+13.78%
Jun 30, 2025
Gleckel (Louis)
103.84K
0.25%
--
--
Apr 29, 2025
Chapin Davis Asset Management
80.00K
0.19%
--
--
Jun 30, 2025
Swisspartners Investment Network AG
50.00K
0.12%
+50.00K
--
Jun 30, 2024
View more
Related ETFs
Updated: Sat, Dec 6
Updated: Sat, Dec 6
Name
Proportion
Dimensional US Core Equity 1 ETF
0%
Avantis US Equity ETF
0%
Avantis US Small Cap Equity ETF
0%
iShares Micro-Cap ETF
0%
Dimensional US Core Equity 1 ETF
Proportion0%
Avantis US Equity ETF
Proportion0%
Avantis US Small Cap Equity ETF
Proportion0%
iShares Micro-Cap ETF
Proportion0%
Dividend
A total of
0.00
USD has been distributed in dividends over the past 5 years.
Date
Dividend
Record Date
Payment Date
Ex-dividend Date
No Data
Stock Split
Date
Type
Ratio
Dec 12, 2025
Merger
10→1
Date
Type
Ratio
Dec 12, 2025
Merger
10→1
FAQs
Who are the top five shareholders of Prophase Labs Inc?
The top five shareholders of Prophase Labs Inc are:
Karkus (Ted William) holds 3.22M shares, accounting for 7.74% of the total shares.
Sykon Capital LLC holds 644.79K shares, accounting for 1.55% of the total shares.
The Vanguard Group, Inc. holds 408.27K shares, accounting for 0.98% of the total shares.
Susquehanna International Group, LLP holds 102.02K shares, accounting for 0.25% of the total shares.
Geode Capital Management, L.L.C. holds 259.06K shares, accounting for 0.62% of the total shares.
Karkus (Ted William) holds 3.22M shares, accounting for 7.74% of the total shares.
Sykon Capital LLC holds 644.79K shares, accounting for 1.55% of the total shares.
The Vanguard Group, Inc. holds 408.27K shares, accounting for 0.98% of the total shares.
Susquehanna International Group, LLP holds 102.02K shares, accounting for 0.25% of the total shares.
Geode Capital Management, L.L.C. holds 259.06K shares, accounting for 0.62% of the total shares.
What are the top three shareholder types of Prophase Labs Inc?
The top three shareholder types of Prophase Labs Inc are:
Karkus (Ted William)
Sykon Capital LLC
The Vanguard Group, Inc.
Karkus (Ted William)
Sykon Capital LLC
The Vanguard Group, Inc.
How many institutions hold shares of Prophase Labs Inc (PRPH)?
As of 2025Q3, 86 institutions hold shares of Prophase Labs Inc, with a combined market value of approximately 3.04M, accounting for 7.33% of the total shares. Compared to 2025Q2, institutional shareholding has increased by -11.44%.
What is the biggest source of revenue for Prophase Labs Inc?
In --, the -- business generated the highest revenue for Prophase Labs Inc, amounting to -- and accounting for --% of total revenue.
