Hank Slack

Hank Slack

Chairman at
Castleton Commodities International LLC

Net worth: 2 M $ as of 30/05/2026

76 year
Process Industries
Non-Energy Minerals
Finance

Profile

Henry R.
Slack
currently works at Castleton Commodities International LLC (Texas), as Chairman, Castleton Commodities International LLC, as Chairman from 2022, Alico Land Development, Inc., as Director, Quarterwatch LLC, as Managing Director, Raritan Headquarters Association, as Trustee, and Rinyami LLC, as Member.
Mr. Slack also formerly worked at Minorco SA, as Chief Executive Officer from 1991 to 1999, Terra Industries, Inc., as Chairman from 2001 to 2010, First Africa Group Holdings Pty Ltd, as Chairman from 2006 to 2009, Task (USA), Inc., as Chairman from 1999 to 2002, Engelhard Corp., as Director from 1981 to 2006, W.
R.
Grace & Co.-Conn., as Independent Director, Anglo American Plc, as Director from 1980 to 2000, ABI SAB Group Holding Ltd., as Director from 1998 to 2002, African Gold Plc, as Director, Anglo American Corporation of South Africa (Pty) Ltd., as Director from 1981 to 1999, BASF Catalysts LLC, as Director, Solomon Brothers, as Director from 1982 to 1988, Salomon Brothers, Inc., as Director from 1982 to 1988, E.
Oppenheimer & Son International Ltd., as Director, Alico, Inc., as Independent Director from 2019 to 2026, SAB Miller Plc, as Director from 1998 to 2002, and Anglo-American Corp., as Director from 1981 to 1999.
Mr. Slack received his undergraduate degree from Princeton University.

Known holdings in public companies

CompanyDateNumber of sharesValuationValuation date
01/01/2026 37,008 ( 0.5% ) 2 M $ 30/05/2026

Hank Slack active positions

CompaniesPositionStart
Quarterwatch LLC
Corporate Officer/Principal -
Raritan Headquarters Association
Director/Board Member -
Chairman 31/12/2021
Director/Board Member -
Rinyami LLC
Corporate Officer/Principal -
Chairman -

Former positions of Hank Slack

CompaniesPositionEnd
ALICO, INC. Chairman 30/06/2019
Chairman 31/12/2009
Chairman 31/12/2008
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See the detail of Hank Slack's experience

Training of Hank Slack

Experiences
Positions held

Active

Inactive

Listed companies

Private companies

Connections

75

1st degree connections

24

1st degree companies

Male

Female

Members of the board

Executives

Linked companies

Private companies24

Process Industries

Process Industries

Process Industries

Process Industries

Non-Energy Minerals

Consumer Non-Durables

Non-Energy Minerals

Non-Energy Minerals

Finance

Non-Energy Minerals

Consumer Services

Energy Minerals

Commercial Services

Finance

Finance

Utilities

E. Oppenheimer & Son International Ltd.

Process Industries

Quarterwatch LLC

Raritan Headquarters Association

Finance

Rinyami LLC

Anglo American Corp.

Consumer Non-Durables

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