John Seifrick

Director/Board Member at MANNATECH, INCORPORATED

Net worth: 78 352 $ as of 31/05/2026

66 year

98 connections

Finance

Consumer Services

Consumer Non-Durables

Profile

John A. Seifrick is the founder of CAST Wines, founded in 2012, where the title held is President & General Manager.
Mr. Seifrick was the founder of Pioneer Bank SSB (Dripping Springs, Texas), founded in 2007, where the title held was Vice Chairman.
Mr. Seifrick is also the founder of Veritex Community Bank (Dallas, Texas).
Current jobs include Vice Chairman at Pioneer Bancshares, Inc. (Texas), Independent Director at Mannatech, Inc. since 2022, Director at 8500 Dry Creek Road LLC, and President at Cast Estate Vineyards & Cellars.
Former jobs include Chairman at Professional Bank from 2002 to 2010, Director at Senior Living Properties LLC, Director at Winegrowers of Dry Creek Valley, Chief Operating Officer at Texas Amend Group, Inc. in 2013, Chief Operating Officer & Executive Vice President at Amend Group from 1990 to 2002, Partner at Fischbach Saum, Inc. from 2002 to 2004, and Controller at Kitchens of the Oceans from 1986 to 1990.
Education includes an undergraduate degree from The Ohio State University conferred in 1982 and an MBA from Harvard Business School conferred in 1986.

Known holdings in public companies

Company	Date	Number of shares	Valuation	Valuation date
MANNATECH, INCORPORATED 0.71%	03/06/2026	13,746 ( 0.71% )	78 352 $	31/05/2026

John Seifrick active positions

Companies	Position	Start
MANNATECH, INCORPORATED	Director/Board Member	15/04/2022
PIONEER BANCSHARES, INC.	Director/Board Member	-
CAST Wines CAST Wines Beverages: AlcoholicConsumer Non-Durables Manufactures and sells wine	Founder	01/01/2012
8500 Dry Creek Road LLC 8500 Dry Creek Road LLC Beverages: AlcoholicConsumer Non-Durables 8500 Dry Creek Road LLC operates Cast Wines, a winery that produces a diverse portfolio of hand-crafted wines sourced from multiple vineyards in Sonoma County, including Dry Creek Valley. The private company is based in Geyserville, CA. The winery offers sparkling, red, white, rosé, prestige, magnums, and non-alcoholic wines, with releases such as the 2021 Meritage Incantation, 2023 Old Vine Zinfandel, 2023 Riesling, and 2023 Sauvignon Blanc. Cast Wines manages an organic certified estate vineyard and collaborates with sustainably farmed vineyards. The company provides wine club memberships with benefits such as limited releases, preferred pricing, exclusive events, and virtual tastings. The company's website offers online shopping, reservations, and information about their wines, vineyards, sustainability practices, and team.	Director/Board Member	-
Cast Estate Vineyards & Cellars	President	-

All active positions of John Seifrick

Former positions of John Seifrick

Companies	Position	End
Pioneer Bank SSB (Dripping Springs, Texas) Pioneer Bank SSB (Dripping Springs, Texas) Savings BanksFinance Operates as a state chartered savings bank	Founder	01/01/2022
Professional Bank /Tx/	Chairman	01/01/2010
Paul Duesing Partners Paul Duesing Partners Miscellaneous Commercial ServicesCommercial Services Fischbach Saum, Inc., also operating as Paul Duesing Partners, is a design firm specializing in creating luxury resort experiences worldwide. The private company is based in Dallas. The American company focuses on authentic, lifestyle-driven designs that reflect the culture and environment of each location, enhancing both aesthetic appeal and financial performance. Its portfolio includes luxury personal resorts, exotic retreats, master-planned resorts, and boutique hotels, often in collaboration with brands such as Auberge, Four Seasons, One & Only, Rosewood, Waldorf Astoria, and St. Regis. Notable projects include Las Ventanas al Paraíso, One & Only Palmilla Resort & Spa, Palms Hotel in Turks and Caicos, The Beverly Hilton, and Sable Lodge.	Corporate Officer/Principal	01/01/2004
Amend Group	Chief Operating Officer	01/01/2002
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Linked companies

Private companies	16
Mannatech, Inc. Mannatech, Inc. Pharmaceuticals: OtherHealth Technology Develops nutritional supplements, topical products, and weight-management products	Health Technology
Veritex Community Bank (Dallas, Texas) Veritex Community Bank (Dallas, Texas) Regional BanksFinance Operates as a state chartered commercial bank	Finance
The Ohio State University The Ohio State University Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
Texas Amend Group, Inc. Texas Amend Group, Inc. Real Estate DevelopmentFinance Provides real estate brokerage, project management, design, and construction services	Finance
Senior Living Properties LLC Senior Living Properties LLC Senior Living Properties LLC provides health care services, including skilled nursing, long-term care, physical and occupational rehabilitation, speech therapy, Alzheimer's care, wound care management, and respite care. The company is based in Bedford, TX.
Pioneer Bank SSB (Dripping Springs, Texas) Pioneer Bank SSB (Dripping Springs, Texas) Savings BanksFinance Operates as a state chartered savings bank	Finance
Cast Estate Vineyards & Cellars
Harvard Business School Harvard Business School Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
Pioneer Bancshares, Inc. (Texas) Pioneer Bancshares, Inc. (Texas) Savings BanksFinance Operates as a bank holding company though its subsidiaries provides savings bank services	Finance
Professional Bank /Tx/
CAST Wines CAST Wines Beverages: AlcoholicConsumer Non-Durables Manufactures and sells wine	Consumer Non-Durables
Winegrowers of Dry Creek Valley Winegrowers of Dry Creek Valley The Winegrowers of Dry Creek Valley is a company based in Healdsburg.
8500 Dry Creek Road LLC 8500 Dry Creek Road LLC Beverages: AlcoholicConsumer Non-Durables 8500 Dry Creek Road LLC operates Cast Wines, a winery that produces a diverse portfolio of hand-crafted wines sourced from multiple vineyards in Sonoma County, including Dry Creek Valley. The private company is based in Geyserville, CA. The winery offers sparkling, red, white, rosé, prestige, magnums, and non-alcoholic wines, with releases such as the 2021 Meritage Incantation, 2023 Old Vine Zinfandel, 2023 Riesling, and 2023 Sauvignon Blanc. Cast Wines manages an organic certified estate vineyard and collaborates with sustainably farmed vineyards. The company provides wine club memberships with benefits such as limited releases, preferred pricing, exclusive events, and virtual tastings. The company's website offers online shopping, reservations, and information about their wines, vineyards, sustainability practices, and team.	Consumer Non-Durables
Amend Group
Paul Duesing Partners Paul Duesing Partners Miscellaneous Commercial ServicesCommercial Services Fischbach Saum, Inc., also operating as Paul Duesing Partners, is a design firm specializing in creating luxury resort experiences worldwide. The private company is based in Dallas. The American company focuses on authentic, lifestyle-driven designs that reflect the culture and environment of each location, enhancing both aesthetic appeal and financial performance. Its portfolio includes luxury personal resorts, exotic retreats, master-planned resorts, and boutique hotels, often in collaboration with brands such as Auberge, Four Seasons, One & Only, Rosewood, Waldorf Astoria, and St. Regis. Notable projects include Las Ventanas al Paraíso, One & Only Palmilla Resort & Spa, Palms Hotel in Turks and Caicos, The Beverly Hilton, and Sable Lodge.	Commercial Services
Kitchens of the Oceans