SPECTRUM PHARMACEUTICALS INC Form DEFA14A: Additional definitive proxy soliciting materials

Filings on SEC EDGAR, newest first; amendments sit with their base form. Values are as filed.

2023-07-20: Form DEFA14A; Description DEFA14A; Document d524109ddefa14a.htm.
2023-07-12: Form DEFA14A; Description DEFA14A; Document d534688ddefa14a.htm.
2023-04-26: Form DEFA14A; Description DEFA14A; Document tm2313713d4_defa14a.htm.
2023-04-26: Form DEFA14A; Description DEFA14A; Document tm2313713d3_defa14a.htm.

Filed	Form	Description	Document
2023-07-20	DEFA14A	DEFA14A	d524109ddefa14a.htm
2023-07-12	DEFA14A	DEFA14A	d534688ddefa14a.htm
2023-04-26	DEFA14A	DEFA14A	tm2313713d4_defa14a.htm
2023-04-26	DEFA14A	DEFA14A	tm2313713d3_defa14a.htm
2023-04-25	DEFA14A	DEFA14A	tm2313713d2_defa14a.htm
2022-04-27	DEFA14A	DEFA14A	d325070ddefa14a.htm
2021-06-02	DEFA14A	DEFA14A	defa14aspectrum2021-06x02v1.htm
2021-04-21	DEFA14A	DEFA14A	additionalmaterials.htm
2020-04-22	DEFA14A	DEFA14A	d921172ddefa14a.htm
2019-04-23	DEFA14A	DEFA14A	d645798ddefa14a.htm
2017-06-07	DEFA14A	DEFA14A	schedule14acoverpage.htm
2016-06-02	DEFA14A	DEFA14A	proxysolicitationdeck.htm
2015-04-30	DEFA14A	DEFA14A	d918981ddefa14a.htm
2014-04-29	DEFA14A	DEFA14A	d717213ddefa14a.htm
2013-05-06	DEFA14A	DEFA14A	d529844ddefa14a.htm
2013-05-06	DEFA14A	DEFA14A	d531490ddefa14a.htm
2012-06-08	DEFA14A	DEFINITIVE ADDITIONAL MATERIALS	d364339ddefa14a.htm
2012-05-01	DEFA14A	NOTICE OF ACCESS	d303636ddefa14a.htm
2010-06-22	DEFA14A	DEFA14A	a56553dadefa14a.htm
2010-06-18	DEFA14A	DEFA14A	a56542defa14a.htm
2005-06-10	DEFA14A	DEFINITIVE ADDITIONAL MATERIALS	a09934defa14a.htm
2002-08-23	DEFA14A	DEFINITIVE ADDITIONAL MATERIALS	ddefa14a.txt
2002-07-23	DEFA14A	NEOTHERAPEUTICS SCHEDULE 14A	ddefa14a.txt