American Security Bank of Washington added three top executives to its senior management last week, after luring them away from key positions in banking and industry from coast to coast.

From Kennecott Copper Corp., the bank hired vice president for finance and tresurer Anthony Ellis, 50, to become executive vice president and chief financial officer of the area's second-largest bank and its parent holding company, American Security Corp.

In addition, ASB named Paul B. Wineman, 50, who has been senior vice president of Bank of California, as chairman of credit policy and supervision; and Robert J. O'Keefe, 52, senior vice president at Chase Manhattan Bank, as senior vice president in charge of operations.

Carleton Stewart, ASB's chairman, said the Washington bank firm is adding to its management in order to keep pace with "projected expansion of our local, regional, national and international markets."

B. Larry Jenkins, president and chief executive officer of Peoples Life Insurance Co., has been elected chairman of the board of the Washington-based insurance firm. Jenkins is also president and chief executive officer of The Home Life Insurance Co. of America, a wholly owned subsidiary of Peoples.

Jenkins succeeds Ernest L. Hogan as chairman of the board. Hogan retired after a career that covered more than 45 years.

Jenkins joined Peoples as an agent in 1959. In 1971 he was elected vice president. In 1974 he was elected senior vice president, administration and in 1976, was elected executive vice president. He became president and chief executive officer in 1977.

Thomas C. Mitchell has been named vice president and general manager of Davenport Insulation Inc. He comes to Davenport from Washington Gas Light Co., where he was assistant to the executive vice president and manager of the company's energy conservation systems program.

Davenport, a subsidiary of Washington Gas, is a major area and East Coast contractor, supplier and seller of residential and commercial insulation materials and equipment.

John B. Henderson, a senior vice president with Textron Inc., has been named to head the company's Washington office.

Henderson joined Textron in 1962. He has served as vice president, general counsel and secretary. Before joining Textron, Henderson was a member of the Office of General Council of the Defense Department and later served as senior staff counsel with the Aluminium Co. of America.

B. R. Satyanarayana Rao has been named to the Washington office of Air-India as area sales manager. Rao, who has been with the airline for 10 years, comes to Washington from Bangalore, India where he served as sales manager.

A new company, Neighborhood Network Inc., has been formed by Judith Portugal, Regina Frank and Carole Kaminsky, of Bethesda. Neighborhood Network is a consulting firm which helps to orient and familiarize new corporate residents to the Washington area.

William R. Johnson has been named vice president of The National Bank of Washington. He was most recently vice president-manager of the U.S.-Ohio division for the Union Commerce Bank in Cleveland. CAPTION: Picture 1, ANTHONY ELLIS; Picture 2, PAUL B. WINEMAN; Picture 3, ROBERT J. O'KEEFE