Close-ish.
wc.Cells(1, 4) = ws.Evaluate("SumProduct((Month(AN2:AN" & lastRow & ")=1)*(AN2:AN" & lastRow & "<>""""))")
Close-ish.
wc.Cells(1, 4) = ws.Evaluate("SumProduct((Month(AN2:AN" & lastRow & ")=1)*(AN2:AN" & lastRow & "<>""""))")
Be as you wish to seem