X0306 4/A 2020-05-06 2020-05-08 0 0001476765 GOLUB CAPITAL BDC, Inc. gbdc 0000820478 STRS OHIO 275 E BROAD ST COLUMBUS OH 43215 0 0 1 0 common stock 2020-05-06 2020-05-06 4 X 0 4072507 11.45 A 20362538 D Subscription Rights (right to buy) 11.45 2020-05-06 4 X 0 4072507 0 D 2020-04-09 2020-05-06 common stock 4072507 0 D The reporting person exercised in full its basic subscription rights (each subscription right entitling it to purchase 1.00 shares of Golub Capital BDC ("GBDC") common stock at a subscription price equal to $11.45 per share), issued to holders of GBDC common stock on the April 8, 2020 record date for the rights offering, under the basic subscription privilege in the rights offering. The reporting person will acquire these shares of common stock when issues by GBDC at the closing of the rights offering. Pursuant to the rights offering, the reporting person has exercised its over-subscription privilege in full and may acquire additional shares of GBDC common stock in the rights offering on a pro-rata basis based on the number of shares each over-subscribing shareholder purchased under the basic subscription privilege to the extent any shares offered in the rights offering are not purchased by GBDC stockholders as part of the basic subscription as of the expiration of the rights offering. Any such additional shares (once determined) will be reported by the reporting person on a subsequent Form 4. John D. Morrow 2020-05-08