Mary Tidlund

Director/Board Member at VALHI, INC.

Net worth: 405 223 $ as of 2026-05-30

69 year

21 connections

Process Industries

Producer Manufacturing

Energy Minerals

Profile

Mary A. Tidlund is the founder of the Mary A Tidlund Charitable Foundation, which was founded in 1998.
She held the title of President from 1998 to 2017.
Currently, she is an Independent Director at Valhi, Inc. and CompX International, Inc. since 2016.
In the past, she was the President & Chief Executive Officer of Williston Wildcatters Oil Corp.
from 1989 to 1995 and a Director at Valhi, Inc. from 2014 to 2015.

Known holdings in public companies

Company	Date	Number of shares	Valuation	Valuation date
COMPX INTERNATIONAL INC. CLASS A 0.07%	2026-05-19	8,100 ( 0.07% )	203 634 $	2026-05-30
VALHI, INC. 0.04%	2026-05-20	10,391 ( 0.04% )	149 526 $	2026-05-30
Kronos Worldwide, Inc. Kronos Worldwide, Inc. Chemicals: SpecialtyProcess Industries Produces and markets value-added titanium dioxide pigments 0.01%	2025-05-21	7,241 ( 0.01% )	52 063 $	2026-05-30

Mary Tidlund active positions

Companies	Position	Start
VALHI, INC.	Director/Board Member	2016-03-16
COMPX INTERNATIONAL INC.	Director/Board Member	2016-03-16

All active positions of Mary Tidlund

Former positions of Mary Tidlund

Companies	Position	End
Mary A Tidlund Charitable Foundation Mary A Tidlund Charitable Foundation Investment Trusts/Mutual FundsMiscellaneous Functions as a foundation or endowment	Founder	2017-05-31
VALHI, INC.	Director/Board Member	2015-05-27
Williston Wildcatters Oil Corp. Williston Wildcatters Oil Corp. Oil & Gas ProductionEnergy Minerals Engages in exploration and production of oil & gas	Chief Executive Officer	1994-12-31

See the detail of Mary Tidlund's experience

Experiences
Positions held

Active

Inactive

Listed companies

Private companies

See the detail of Mary Tidlund's experience

Connections

1st degree connections

1st degree companies

Male

Female

Members of the board

Executives

See the personal network

Linked companies

Private companies	4
Valhi, Inc. Valhi, Inc. Chemicals: SpecialtyProcess Industries Operates as a holding company	Process Industries
CompX International, Inc. CompX International, Inc. Metal FabricationProducer Manufacturing Manufactures and distributes mechanical and electrical cabinet locks & other security products	Producer Manufacturing
Williston Wildcatters Oil Corp. Williston Wildcatters Oil Corp. Oil & Gas ProductionEnergy Minerals Engages in exploration and production of oil & gas	Energy Minerals
Mary A Tidlund Charitable Foundation Mary A Tidlund Charitable Foundation Investment Trusts/Mutual FundsMiscellaneous Functions as a foundation or endowment	Miscellaneous