Semapa

{{Short description|Portuguese materials conglomerate}}

{{for|the water company in Bolivia|Semapa (Bolivia)}}

{{Infobox company

| name = Semapa - Sociedade de Investimento e Gestão, SGPS, S.A.

| type = Public (Sociedade Anónima)

| traded_as = {{EuronextLisbon|SEM|PTSEM0AM0004}}

| ISIN = {{ISIN|sl=n|pl=y|PTSEM0AM0004}}

| logo = Logo Semapa.svg

| logo_size = 150px

| foundation = 1991

| location = Lisbon, Portugal

| industry = Conglomerate

| products =

| key_people = Pedro Queiroz Pereira (founder)

| revenue = €2.71 billion (2023){{cite web |title=Results Presentation - Year 2023 |url=https://www.semapa.pt/wp-content/uploads/2024/02/2024-02-27-SEM-PR-12M-2023-EN-VF.pdf }}

| operating_income = €282.8 million (2010){{cite web |url=http://www.semapa.pt/pdf/RELCONS_2010_EN.pdf |title=Annual Report 2010 |access-date=25 July 2011 |publisher=Semapa |url-status=dead |archive-url=https://web.archive.org/web/20120328041909/http://www.semapa.pt/pdf/RELCONS_2010_EN.pdf |archive-date=28 March 2012 }}

| net_income = €126.7 million (2010)

| assets = €3.570 billion (end 2010)

| equity = €1.244 billion (end 2010)

| num_employees = 6,550 (2023){{cite web |url=https://www.statista.com/statistics/1529021/grupo-semapa-employees/ |title=Employees}}

| subsid = The Navigator Company, Secil, Grupo ETSA

| homepage = {{url|www.semapa.pt}}

}}

Semapa - Sociedade de Investimento e Gestão ({{langx|en|Semapa - Investment and Management Company}}) is a Portuguese conglomerate holding company with interests in the cement, pulp and paper and environmental services sectors.

The company owns 76.7% of The Navigator Company, previously known as Portucel Soporcel, Europe's largest producer of bleached eucalyptus kraft pulp.{{cite news|url=https://www.reuters.com/article/idINLS35368620091028|title=Portucel's profit falls 38%, gives bleak forecast|last=Khalip|first=Andrei|date=28 October 2009|work=Reuters|access-date=4 January 2010}} It also holds 51% of {{ill|Secil Group|pt|Secil}}, a manufacturer of cement and its derivatives; and 100% of ETSA, a waste management firm involved in the collection, storage and treatment of animal by-products.

The company is listed on Euronext Lisbon stock exchange and is a constituent of the PSI 20 index.