SEC Form 4 · accession 0001104659-18-018384

Amphastar Pharmaceuticals, Inc. · AMPH

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

Reporting owners

Officer — COO, Chief Scientist, Chairman · Director · 10% Owner

Officer — CEO & Chief Scientific Officer · Director · 10% Owner

Period of report

Mar 15, 2018

Accepted (ET)

Mar 16, 2018 · 6:13 pm EDT

Rule 10b5-1 plan

unknown — predates the checkbox

Issuer CIK

0001297184

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock^F1	Mar 15, 2018	A	98,029	$0.00	A	2,111,194	D
Common Stock^F1,F2	Mar 15, 2018	A	41,687	$0.00	A	1,372,333	I	See footnote
Common Stock^F3	holding	—	—		—	7,461,594	I	See footnote
Common Stock^F4	holding	—	—		—	5,000	I	See footnote
Common Stock^F5	holding	—	—		—	200,000	I	See footnote

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Employee Stock Option (right to buy)^F6	$21.77	Mar 15, 2018	A	273,692	A	—	Mar 15, 2026	Common Stock	273,692	273,692	D
Employee Stock Option (right to buy)^F2,F6	$21.77	Mar 15, 2018	A	116,392	A	—	Mar 15, 2028	Common Stock	116,392	116,392	I

F1The reported shares are represented by restricted stock units, or RSUs, which vest in three equal annual installments beginning on March 15, 2019.
F2The securities are held of record by Mary Z. Luo. The reporting persons are husband and wife.
F3The shares are held of record by APCL, of which the reporting persons and The Bill Luobei Zhang 2004 Irrevocable Trust (the "BLZ Trust") are the sole owners.
F4The shares are held of record in an account for the benefit of the reporting persons' son. The reporting persons disclaim beneficial ownership of these shares, and the inclusion of these shares in this report should not be deemed an admission of beneficial ownership of any such shares for purposes of Section 16, or for any other purpose.
F5The shares are held of record by the BLZ Trust. In prior Section 16 reports, these shares were reported as held of record by a trust for the benefit of the reporting persons' son. The reporting persons disclaim beneficial ownership of these shares, and the inclusion of these shares in this report should not be deemed an admission of beneficial ownership of any such shares for purposes of Section 16, or for any other purpose.
F6Shares subject to the option vest in three equal annual installments beginning on March 15, 2019.

Exhibit 24.1 - Zhang Power of Attorney; Exhibit 24.2 - Luo Power of Attorney