This study aims to present further evidence of cost stickiness by employing Selling, General, and Administrative (SG&A) costs. It also provides empirical evidence on the effect of audit committee meetings and audit quality on cost stickiness. The study used data from listed companies on the Saudi Arabian stock exchange during 2015–2019. Based on pooled panel data regression, the study proves that the SG&A costs are sticky. The results show the level of SG&A costs increases more with an increase in sales revenue (activity) while it decreases less with an equivalent reduction in sales revenue (activity). Also, this study finds that the frequency of audit committee meetings decreases the magnitude stickiness of SG&A costs, which supports the view that frequent meetings of AC significantly enhance its overseeing function and effectiveness. The study further reveals that audit quality “by BIG4 audit firms” is not related to reduced cost stickiness. This result implies that there is no difference in CS between companies audited by BIG4 or by non-BIG4. In general, the research highlights the importance of AC diligence (i.e., meetings) in improving its effectiveness and controlling management’s discretions affecting the cost structure in the context of sticky cost behavior.