AMPHASTAR PHARMACEUTICALS IN

Ticker: AMPH CUSIP: 03209R103 Class: Common Stock

OBERWEIS ASSET MANAGEMENT INC/'s Holding History (CIK: 0000937886)

Note: Option positions (PUT/CALL) are excluded.

Q4 2024
Shares 184,595 Value ($000) $6,854 Avg Close $45.73 Range $36.48 - $53.96
Q3 2024
Shares 161,155 Value ($000) $7,821 Avg Close $43.89 Range $36.56 - $50.62
Q2 2024
Shares 135,055 Value ($000) $5,402 Avg Close $41.44 Range $38.43 - $46.62
Q1 2024
Shares 417,865 Value ($000) $18,348 Avg Close $51.65 Range $42.16 - $65.92
Q4 2023
Shares 340,265 Value ($000) $21,045 Avg Close $52.53 Range $43.79 - $63.67
Q3 2023
Shares 152,500 Value ($000) $7,013 Avg Close $54.55 Range $44.86 - $67.66
Q2 2023
Shares 147,800 Value ($000) $8,494 Avg Close $44.33 Range $35.62 - $58.70
Q1 2023
Shares 178,200 Value ($000) $6,683 Avg Close $32.78 Range $27.58 - $38.22
Q4 2022
Shares 134,000 Value ($000) $3,755 Avg Close $29.04 Range $26.76 - $31.64
Q3 2022
Shares 101,500 Value ($000) $2,852 Avg Close $32.65 Range $27.10 - $39.07
Q2 2022
Shares 17,900 Value ($000) $623 Avg Close $35.69 Range $28.64 - $44.46
Q1 2022
Shares 13,500 Value ($000) $485 Avg Close $28.36 Range $22.07 - $37.16
Q4 2021
Shares 13,500 Value ($000) $314 Avg Close $20.45 Range $18.12 - $23.85
Q3 2021
Shares 10,600 Value ($000) $202 Avg Close $19.59 Range $17.56 - $21.63
Q2 2021
Shares 10,600 Value ($000) $214 Avg Close $18.84 Range $16.91 - $20.94
Q4 2016
Shares 27,200 Value ($000) $501 Avg Close $19.45 Range $16.87 - $21.75
Q3 2016
Shares 27,200 Value ($000) $516 Avg Close $18.15 Range $15.62 - $21.53
Q2 2016
Shares 27,200 Value ($000) $438 Avg Close $14.11 Range $11.41 - $16.78