openssl pkcs12 -in cert.pfx -nocerts -out key.pem
openssl rsa -in key.pem -out server.key
openssl pkcs12 -in cert.pfx -clcerts -nokeys -out cert.pem
openssl pkcs12 -in cert.pfx -nodes -nokeys -out chain.pem

server.key (Certificate Private Key)
cert.pem (Certificate Body)
chain.pem (Certificate Chain)
key.pem (Not used, but generated by the second command)

Bag Attributes
    localKeyID: 01 00 00 00
    friendlyName: ***************
subject=/CN=*************.com/O=*****************/L=Richmond/ST=British Columbia/C=CA
issuer=/C=US/ST=Illinois/L=Chicago/O=Trustwave Holdings, Inc./CN=Trustwave Organization Validation SHA256 CA, Level 1/emailAddress=ca@trustwave.com

openssl pkcs12 -in _cert.pfx -nocerts -out certOut.key.pem
openssl rsa -in certOut.key.pem -out certOut.server.key
openssl pkcs12 -in _cert.pfx -clcerts -nokeys -out certOut.cert.pem
openssl pkcs12 -in _cert.pfx -nodes -nokeys -out certOut.chain.pem