It is common for science people at 4/4 institutions to not have that. (As noted a couple pages ago, my real load is actually 3/3 with 6 preps, which could go higher.)
I should mention that my load is only 3/3 because I supervise undergraduate researchers and that has led to student co-authorship in peer-reviewed journals. Our institutional load is nominally 4/4, but I'm in one of the few departments that takes undergrad research seriously. Unfortunately, while I enjoy working with the undergrads, it slows down my research progress overall.