Common Stock	12 Months Ended
Dec. 31, 2016
Equity [Abstract]
Common Stock	7. Common Stock Each holder of common stock is entitled to one vote for each share of common stock held. The Company’s common stock is not entitled to preemptive rights, and is not subject to conversion, redemption or sinking fund provisions. Subject to preferences that may apply to any shares of preferred stock outstanding at the time, the holders of common stock are entitled to receive dividends out of funds legally available if the board of directors, in its discretion, determines to issue dividends and then only at the times and in the amounts that the board of directors may determine. As of December 31, 2016, no common stock dividends had been declared by the board of directors. The Company’s former LLC Agreement authorized Aeglea LLC to issue three classes of common shares, each with no par value: Common A-1 shares, Common A shares, and Common B shares. Upon the LLC Conversion, each outstanding Common A-1 and Common A share was automatically converted into one share of common stock, par value $0.0001 per share. See Note 9 regarding the conversion of outstanding Common B shares.

7. Common Stock

Each holder of common stock is entitled to one vote for each share of common stock held. The Company’s common stock is not entitled to preemptive rights, and is not subject to conversion, redemption or sinking fund provisions. Subject to preferences that may apply to any shares of preferred stock outstanding at the time, the holders of common stock are entitled to receive dividends out of funds legally available if the board of directors, in its discretion, determines to issue dividends and then only at the times and in the amounts that the board of directors may determine.

As of December 31, 2016, no common stock dividends had been declared by the board of directors.

The Company’s former LLC Agreement authorized Aeglea LLC to issue three classes of common shares, each with no par value: Common A-1 shares, Common A shares, and Common B shares. Upon the LLC Conversion, each outstanding Common A-1 and Common A share was automatically converted into one share of common stock, par value $0.0001 per share. See Note 9 regarding the conversion of outstanding Common B shares.