$Sienna(SNNA)$ 8-K - Current report Filed: 2019-09-17 AccNo: 0001193125-19-246310 Size: 26 KBItem 1.03: Bankruptcy or ReceivershipItem 2.04: Triggering Events That Accelerate or Increase a Direct Financial Obligation or an Obligation under an Off-Balance Sheet ArrangementItem 5.02: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers 网页链接