SEC Form 4 · accession 0001209191-15-086906

Calithera Biosciences, Inc. · CALA

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

Officer — PRESIDENT AND CEO · Director

Period of report

Dec 21, 2015

Accepted (ET)

Dec 23, 2015 · 7:13 pm EST

Rule 10b5-1 plan

unknown — predates the checkbox

Issuer CIK

0001496671

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock^F1	Dec 21, 2015	M	4,367	$0.48	A	85,654	D
Common Stock^F1	Dec 21, 2015	M	5,512	$0.48	A	91,166	D
Common Stock^F1	Dec 21, 2015	M	6,306	$0.96	A	97,472	D
Common Stock^F1	Dec 21, 2015	M	11,640	$2.64	A	109,112	D
Common Stock	holding	—	—		—	117,962	I	By Trust
Common Stock	holding	—	—		—	39,542	I	By Spouse

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Employee Stock Option (Right to Buy)^F2	$0.48	Dec 21, 2015	M	4,367	D	—	Dec 13, 2021	Common Stock	4,367	0	D
Employee Stock Option (Right to Buy)^F3	$0.48	Dec 21, 2015	M	5,512	D	—	Jun 12, 2022	Common Stock	5,512	4,410	D
Employee Stock Option (Right to Buy)^F4	$0.96	Dec 21, 2015	M	6,306	D	—	May 22, 2023	Common Stock	6,306	22,703	D
Employee Stock Option (Right to Buy)^F5	$2.64	Dec 21, 2015	M	11,640	D	—	Dec 16, 2023	Common Stock	11,640	73,794	D
Employee Stock Option (Right to Buy)^F4	$0.96	Dec 21, 2015	M	5,418	D	—	May 22, 2023	Common Stock	5,418	19,506	I
Employee Stock Option (Right to Buy)^F5	$2.64	Dec 21, 2015	M	4,749	D	—	Dec 16, 2023	Common Stock	4,749	18,996	I

F1Includes 2,500 shares acquired under the Company's 2014 Employee Stock Purchase Plan on November 13, 2015.
F21/48 of the Option vests in equal monthly installments one month from 11/07/2011. The option shall be subject to accelerated vesting as set forth in the optionee's employment agreement with the Company.
F31/48 of the Option vests in equal monthly installments one month from 03/27/2012. The option shall be subject to accelerated vesting as set forth in the optionee's employment agreement with the Company.
F41/48 of the Option vests in equal monthly installments one month from 05/23/2013. The option shall be subject to accelerated vesting as set forth in the optionee's employment agreement with the Company.
F51/48 of the Option vests in equal monthly installments one month from 12/17/2013. The option shall be subject to accelerated vesting as set forth in the optionee's employment agreement with the Company.