Check out the companies making headlines after the bell : United Airlines — Shares fell nearly 2% after the airline carrier posted a second-quarter revenue of $15.24 billion, missing analysts’ expectations of $15.35 billion, according to LSEG. Earnings, however, came in at $3.87 per share, exceeding the $3.81 consensus. Sarepta Therapeutics — The biopharma stock soared 32% after the company announced a ” strategic restructuring ” plan that involved a 36% workforce reduction, or around 500 employees. This plan aims to deliver about $400 million in anticipated annual savings. Monarch Casino & Resort — Shares popped 14% after the casino operator reported second-quarter earnings of $1.44 per share, up about 21% from the year-ago period. The company’s $136.9 million revenue reflected a nearly 7% jump from a year earlier. Alcoa — The aluminum producer added nearly 2% after posting second-quarter adjusted earnings of 39 cents per share on revenue of $3.02 billion. Analysts had expected earnings of 31 cents and $2.90 billion in revenue, according to LSEG. AAR — The aircraft maintenance company rose 3% after posting fiscal fourth-quarter adjusted earnings of $1.16 per share, up 32% from a year earlier. The company’s $754.5 million revenue was higher than the year-ago figure of $656.5 million. SL Green Realty — Shares of the real estate investment trust popped 1% after the commercial real estate company lifted its full-year guidance for funds from operations. SL Green sees FFO for the fiscal year coming in at $5.65 to $5.95 per share, up from earlier guidance of $5.25 to $5.55 per share.