SystemVerilog Assertions Handbook, 4th Edition is a follow-up book to the popular and highly recommended third edition, published in 2013. This 4th Edition is updated to include: 1. A new section on testbenching assertions, including the use of constrained-randomization, along with an explanation of how constraints operate, and with a definition of the most commonly used constraints for verifying assertions. 2. More assertion examples and comments that were derived from users' experiences and difficulties in using assertions; many of these issues were reported in newsgroups, such as the and the 3. Links to new papers on the use of assertions, such as in a UVM environment. 4. Expected updates on assertions in the upcoming IEEE 1800-2018 Standard for SystemVerilog Unified Hardware Design, Specification, and Verification Language. The SVA goals for this 1800-2018 were to maintain stability and not introduce substantial new features. However, a few minor enhancements were identified and are expected to be approved. The 3rd Edition of this book was based on the IEEE 1800-2012.