Simpson Manufacturing Co., Inc.
Simpson Manufacturing Company is a building materials manufacturer in the United States that produces structural connectors, fasteners, anchors, and products for new construction and retrofitting.
Basic company information
Each field links to its source. Financial figures retain their reporting periods; background references are identified in the source list.
- Business sectors
- building materials trade; construction [1]
- Company / filing name
- Simpson Manufacturing Co., Inc. [2]
- Headquarters location
- Pleasanton [1]
- Founded
- 1956 [1]
- Legal form
- company [1]
- Official website
- simpsonmfg.com ↗ [1]
- Employees
- 2,500 · reported year 2016 [1]
- ISIN (reported securities)
- US8290731053 [1]
- CIK
- 920371 [2]
- Country in background record
- United States [1]
- Symbols / exchanges
- SSD (NYSE) [2]
Company positioning and business
Simpson Manufacturing Company is a building materials manufacturer in the United States that produces structural connectors, fasteners, anchors, and products for new construction and retrofitting. [3]
The company was founded by Barclay Simpson in Oakland in 1956, as a successor to a window screen company owned by his father, Walter Simpson. Simpson manufactured joist hangers and the company's subsidiary Simpson Strong-Tie Co. Inc. became a dominant producer of structural connectors in North America and Europe. The company subsequently moved to Pleasanton and went public in 1994. [3]
Background text: Wikipedia contributors, Simpson Manufacturing Company. Selected introductory paragraphs, licensed under CC BY-SA 4.0. Official filing data is cited separately.
Understanding company scale
Employees: 2,500 · reported year 2016. [1]
Financial year, securities and disclosures
Listed securities: SSD (NYSE). Multiple symbols may represent different share classes or securities of the same registrant. [2]
History and key events
Founding / inception date recorded in Wikidata. [1]
Financial results and regulatory disclosures
No individual financial documents have been indexed yet. Open the source to consult company disclosures. [2]
Related entities and concepts
Frequently asked questions
When was Simpson Manufacturing Co., Inc. founded?
Founded: 1956. The linked source provides the background record. [1]
Where is the headquarters of Simpson Manufacturing Co., Inc.?
Headquarters location: Pleasanton. The linked source provides the background record. [1]
Which business sectors are recorded for Simpson Manufacturing Co., Inc.?
Business sectors: building materials trade; construction. The linked source provides the background record. [1]
Sources and review dates
- Wikidata — company background record (CC0) ↗
- Company identity and profile data ↗
- Wikipedia contributors — Simpson Manufacturing Company (CC BY-SA 4.0) ↗
Reviewed 23 October 2026. Financial periods and historical event dates are shown separately. Figures reflect their stated source dates; this page is not a live quote or investment recommendation.