SPIE Bylaws (as amended 8 November 2025) by the Board of Directors for the regulation, except as otherwise provided by statutes or its Articles of Incorporation of The Society of Photo-Optical Instrumentation Engineers, also known as "SPIE" (a California nonprofit corporation).
A pdf of the SPIE Bylaws can be downloaded here
If you have questions regarding the SPIE bylaws email governance@spie.org