LIGAND PHARMACEUTICALS INC

Ticker: LGND CUSIP: 53220K504 Class: Common Stock

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

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

Q3 2019

Shares 2,440 Value ($000) $243 Avg Close $62.78 Range $52.68 - $75.33

Q2 2019

Shares 3,740 Value ($000) $427 Avg Close $73.65 Range $66.20 - $81.41

Q1 2019

Shares 44,649 Value ($000) $5,613 Avg Close $75.76 Range $61.48 - $90.42

Q4 2018

Shares 43,229 Value ($000) $5,866 Avg Close $106.61 Range $79.98 - $173.81

Q3 2018

Shares 35,587 Value ($000) $9,768 Avg Close $150.76 Range $127.91 - $172.25

Q2 2018

Shares 49,127 Value ($000) $10,178 Avg Close $111.59 Range $93.09 - $132.56

Q1 2018

Shares 48,792 Value ($000) $8,058 Avg Close $98.89 Range $85.31 - $115.28

Q4 2017

Shares 59,352 Value ($000) $8,127 Avg Close $86.68 Range $78.91 - $93.14

Q3 2017

Shares 51,502 Value ($000) $7,012 Avg Close $79.18 Range $71.99 - $86.39

Q2 2017

Shares 49,452 Value ($000) $6,003 Avg Close $69.95 Range $63.98 - $77.62

Q1 2017

Shares 50,922 Value ($000) $5,390 Avg Close $65.79 Range $59.31 - $68.75

Q4 2016

Shares 77,922 Value ($000) $7,918 Avg Close $63.11 Range $54.59 - $69.14

Q3 2016

Shares 74,162 Value ($000) $7,569 Avg Close $73.42 Range $60.65 - $87.21

Q2 2016

Shares 84,442 Value ($000) $10,071 Avg Close $74.21 Range $66.08 - $82.25

Q1 2016

Shares 91,767 Value ($000) $9,827 Avg Close $60.78 Range $51.19 - $67.87

Q4 2015

Shares 101,127 Value ($000) $10,964 Avg Close $61.74 Range $50.61 - $71.12

Q3 2015

Shares 95,367 Value ($000) $8,168 Avg Close $60.68 Range $44.68 - $70.12

Q2 2015

Shares 93,307 Value ($000) $9,415 Avg Close $54.56 Range $46.51 - $63.78

Q1 2015

Shares 125,387 Value ($000) $9,669 Avg Close $38.31 Range $30.97 - $49.66

Q4 2014

Shares 162,387 Value ($000) $8,641 Avg Close $32.53 Range $26.19 - $36.48

Q3 2014

Shares 168,337 Value ($000) $7,910 Avg Close $33.19 Range $28.90 - $40.96

Q2 2014

Shares 176,837 Value ($000) $11,015 Avg Close $40.58 Range $34.87 - $44.57

Q1 2014

Shares 213,737 Value ($000) $14,378 Avg Close $41.68 Range $31.65 - $50.17

Q4 2013

Shares 213,317 Value ($000) $11,220 Avg Close $32.58 Range $26.95 - $36.48

Q3 2013

Shares 148,532 Value ($000) $6,428 Avg Close $28.13 Range $22.97 - $31.72

Q2 2013

Shares 14,000 Value ($000) $524 Avg Close $17.99 Range $14.66 - $23.74

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2019	2,440	$243	$62.78	$52.68 - $75.33
Q2 2019	3,740	$427	$73.65	$66.20 - $81.41
Q1 2019	44,649	$5,613	$75.76	$61.48 - $90.42
Q4 2018	43,229	$5,866	$106.61	$79.98 - $173.81
Q3 2018	35,587	$9,768	$150.76	$127.91 - $172.25
Q2 2018	49,127	$10,178	$111.59	$93.09 - $132.56
Q1 2018	48,792	$8,058	$98.89	$85.31 - $115.28
Q4 2017	59,352	$8,127	$86.68	$78.91 - $93.14
Q3 2017	51,502	$7,012	$79.18	$71.99 - $86.39
Q2 2017	49,452	$6,003	$69.95	$63.98 - $77.62
Q1 2017	50,922	$5,390	$65.79	$59.31 - $68.75
Q4 2016	77,922	$7,918	$63.11	$54.59 - $69.14
Q3 2016	74,162	$7,569	$73.42	$60.65 - $87.21
Q2 2016	84,442	$10,071	$74.21	$66.08 - $82.25
Q1 2016	91,767	$9,827	$60.78	$51.19 - $67.87
Q4 2015	101,127	$10,964	$61.74	$50.61 - $71.12
Q3 2015	95,367	$8,168	$60.68	$44.68 - $70.12
Q2 2015	93,307	$9,415	$54.56	$46.51 - $63.78
Q1 2015	125,387	$9,669	$38.31	$30.97 - $49.66
Q4 2014	162,387	$8,641	$32.53	$26.19 - $36.48
Q3 2014	168,337	$7,910	$33.19	$28.90 - $40.96
Q2 2014	176,837	$11,015	$40.58	$34.87 - $44.57
Q1 2014	213,737	$14,378	$41.68	$31.65 - $50.17
Q4 2013	213,317	$11,220	$32.58	$26.95 - $36.48
Q3 2013	148,532	$6,428	$28.13	$22.97 - $31.72
Q2 2013	14,000	$524	$17.99	$14.66 - $23.74