OMA hosts year-round workshops, art appreciation classes, lectures, seminars, films and guided tours for children and adults.

The organization began as a small art center with a group of artists who met informally in the early 1920s, displaying and critiquing their work.

OMA began to collect art in 1960 when it accepted the donations of important American paintings by Georgia O'Keeffe and Charles Sheeler.

OMA continued its expansion, working with architects Nils Schweizer and Duane Stark, both students of Frank Lloyd Wright.

[7] A few days after the FBI seizure, the board released a statement announcing that De Groft is no longer the Director and CEO of the museum.

[12] In January 2024, The New York Times reported the scandal led to significant financial distress for the museum, due to a reduction in donor support as well as costs for dealing with the aftermath.

[2] On May 1, 2018, OMA announced that it may become the permanent home of an extensive collection of the paintings of Belgian Post-Impressionist painter, Louis Dewis.

Artists range from emerging to mid-career, often with distinguished records of exhibitions and awards that reflect recognition at national and international levels.