US Ecology, Inc. (ECOL) 2021年年度报告「NASDAQ」.pdf

1、Table of ContentsUNITEDSTATESSECURITIESANDEXCHANGECOMMISSIONWashington,D.C.20549FORM10-K ANNUALREPORTPURSUANTTOSECTION13or15(d)OFTHESECURITIESEXCHANGEACTOF1934ForthefiscalyearendedDecember31,2021OR TRANSITIONREPORTPURSUANTTOSection13or15(d)OFTHESECURITIESEXCHANGEACTOF1934Forthetransitionperiodfromto

2、.Commissionfilenumber:001-39120USECOLOGY,INC.(Exact name of registrant as specified in its charter)Delaware(State or other jurisdiction ofincorporation or organization)84-2421185(I.R.S.EmployerIdentification No.)101S.CapitolBlvd.,Suite1000Boise,Idaho(Address of principal executive offices)83702(Zip

3、Code)Registrants telephone number,including area code:(208)331-8400Securities registered pursuant to Section 12(b)of the Act:Title of each classTrading Symbol(s)Name of each exchange on which registeredCommon Stock,par value$0.01 per shareECOLNasdaq Global Select MarketWarrants to Purchase Common St

4、ockECOLWNasdaq Capital MarketSecurities registered pursuant to Section 12(g)of the Act:NoneIndicate by check mark if the registrant is a well-known seasoned issuer,as defined in Rule 405 of the Securities Act.Yes No Indicate by check mark if the registrant is not required to file reports pursuant to

5、 Section 13 or Section 15(d)of the Act.Yes No Indicate by check mark whether the registrant(1)has filed all reports required to be filed by Section 13 or 15(d)of the Securities Exchange Act of 1934 during the preceding 12 months(or for such shorter period thatthe Registrant was required to file such

6、 reports),and(2)has been subject to such filing requirements for the past 90 days.Yes No Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T(232.405 of this chapter)during the preceding