Tanga Cement Company Limited was commissioned in 1980 and built largely from funds donated by Danish Government. In 1989 Holcim, the world's second largest cement company, took over a contract to manage Tanga Cement Company.

In 1996 Holcim Mauritius successfully acquired the majority share of the company. Today, Holcim Mauritius holds 62.5% of the Company with 36.9% being owned by Tanzania General Public and Institutions and 0.6% being owned by the Tanga Cement Employees' Share Trust.

The Company's history can be summarized as below:

1978 The construction of the Tanga Cement plant started

1980 The Tanga Cement Company Plant commissioned

1989 Holcim Mauritius Investment Holdings Ltd. signs Management contract

1996 Privatization:
- 60% Holcim (previous Holderbank)
- 40% Government of The United Republic of Tanzania

2002 Public Company IPO with:
- 62.5% Holcim Mauritius
- 32.5% publicly traded shares
- 5% Employees' Share Trust

2005 Shareholding:
- 62.5% Holcim Mauritius
- 35.4% Publicly Traded Shares
- 2.1% Employees' Share Trust

2006 Shareholding:
- 62.5% Holcim Mauritius
- 36.4% Tanzania General Public and Institutions
- 1.1% Employees' Share Trust

2007 Shareholding:
- 62.5% Holcim Mauritius
- 36.9% Tanzania General Public and Institutions
- 0.6% Employees' Share Trust

2008 Shareholding:
- 62.5% Holcim Mauritius
- 37.0% Tanzania General Public and Institutions
- 0.5% Employees' Share Trust

2009 Shareholding:
- 62.5% Holcim Mauritius
- 36.25% Tanzania General Public and Institutions
- 0.75% Employees' Share Trust

Tanga Cement shares trade under its brand name, Simba, at the Dar es Salaam Stock Exchange.