EXHIBIT NO. 99.4(x) INVESTMENT ADVISORY AGREEMENT INVESTMENT ADVISORY AGREEMENT, dated this 1st day of May, 1998, by and between MFS/SUN LIFE SERIES TRUST, a Massachusetts business trust (the "Trust"), on behalf of MASSACHUSETTS INVESTORS GROWTH STOCK...Investment Advisory Agreement • February 22nd, 1999 • MFS Sun Life Series Trust
WITNESSETH:Investment Advisory Agreement • February 22nd, 1999 • MFS Sun Life Series Trust
