Rochester is on this “top 10 frontloading aid” list.
However, so is Northeastern, which guarantees same net cost all 4 years. This list is from 2015 so may not reflect that change, or others. As mentioned earlier Albright is on it though they went to meet-need for new students only during that time.
Other examples I found were outside one year scholarships going away and not being replaced by the institution (probably not common at meed-need schools), losing a merit scholarship and income/asset/family-in-college changes.
In my kids’ experience, a bit more is expected each year from the student, not the family, and it’s explicitly stated, with amounts. First year students have a lower summer/work study expectation than upperclasspeople.