Private company

Lear Siegler

American manufacturing company

Lear Siegler Incorporated (LSI) was a diverse American corporation established in 1962. Its products range from car seats and brakes to weapons control systems for military fighter planes. The company's more than $2 billion-a-year annual sales comes from three major areas: aerospace-technology, automotive parts, and industrial-commercial.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

Lear Siegler Incorporated (LSI) was a diverse American corporation established in 1962. Its products range from car seats and brakes to weapons control systems for military fighter planes. The company's more than $2 billion-a-year annual sales comes from three major areas: aerospace-technology, automotive parts, and industrial-commercial. The company, however, is basically anonymous, since its products are either unmarked or bear only the label "LSI". Lear Siegler went private in 1987.2

How it started

Siegler

The Siegler Corporation was incorporated in December 1950 as the Siegler Heating Company. Originally a maker of climate control equipment, the company changed its name to Siegler Corporation after merging with Siegler Enamel Range Company Inc. in 1954. In that year, John G. Brooks, a flamboyant entrepreneur, and nine other associates bought the Siegler Corporation of Centralia, Illinois, for $3.3 million; $3.2 million of this was borrowed for 24 hours at a cost of $60,000. Over the next decade and a half, Brooks, who became Siegler's first president, established a reputation for supervising numerous startling acquisitions. In June 1955, seven months after the merger, Hallamore Manufacturing Company, an electronics firm, became Siegler's first "technology" acquisition. During the 1960s, the company expanded rapidly. John G. Brooks (Echo Products, Zenith Radio, and US Army Air Corps) headed up the new enterprise.

The management team transformed the low-tech space heater company into a viable corporate platform for acquiring multiple successful small companies. This strategy of "buying growth" coupled with sound management proved successful. At the end of its first year the corporation listed on the New York Stock Exchange.

The Siegler Corporation quickly distinguished itself as one of the first conglomerates. These were a new breed of business entities that were characterized by a variety of diverse business interests or operating divisions held or controlled by a central management. This management component was typically the only thing these divisions had in common. Examples of conglomerates are LTV (Ling-Temco-Vought) and TRW (Thompson Ramo Wooldridge).

Siegler continued its program of non-hostile acquisitions of target companies. In 1956–1957 it added Hallamore Electronics of Anaheim, California, and the corporate offices followed to Southern California. Notable efforts of the new Los Angeles based enterprise included:

The first attempt to introduce cable television (1960–1961) in the form of a product offered by STV (subscription television) was strongly opposed by theater owners and existing television networks, and their lobbying effort resulted in a legislative measure to prohibit such service.

From Wikipedia’s article on Lear Siegler, shared under CC BY-SA 4.0.2

Acquisitions

  1. Succeeded Bangor Punta Corp.1

Sources

The numbers on this page point here. Each one links to the record it came from.

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