Chang Michael N

Number of records: 43
SEC FilingCompany/StockTrade DateTransactionSharesAvg. PriceTotal% HoldingsGain/Loss
28-Oct-13 2:43 PM
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Optimer Pharmaceuticals, Inc. (OPTR) 24-Oct-13Disposition 1,026,960$10.75$11,039,800.00(70%)
1.47M to 441.76K
28-Oct-13 2:43 PM
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Optimer Pharmaceuticals, Inc. (OPTR) 24-Oct-13Disposition 441,761$10.75$4,748,930.00(100%)
441.76K to 0
06-Sep-13 1:40 PM
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Optimer Pharmaceuticals, Inc. (OPTR) 04-Sep-13Option Exercise 178,000$8.59$1,529,480.0011%
1.62M to 1.8M
06-Sep-13 1:40 PM
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Optimer Pharmaceuticals, Inc. (OPTR) 04-Sep-13Option Exercise 103,615$9.01$933,205.006%
1.8M to 1.9M
25-Apr-13 12:14 PM
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Optimer Pharmaceuticals, Inc. (OPTR) 23-Apr-13Option Exercise 117,263$1.08$127,043.0016%
731.69K to 848.96K
11-Apr-13 1:31 PM
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Optimer Pharmaceuticals, Inc. (OPTR) 09-Apr-13Option Exercise 103,125$12.34$1,272,560.0016%
628.57K to 731.69K
05-Apr-13 8:01 PM
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Optimer Pharmaceuticals, Inc. (OPTR) 03-Apr-13Option Exercise 145,312$12.34$1,793,150.0030%
483.26K to 628.57K
03-Jan-12 6:39 PM
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Optimer Pharmaceuticals, Inc. (OPTR) 01-Jan-12Grant 5,000----1%
478.26K to 483.26K
17-Nov-11 2:09 PM
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Optimer Pharmaceuticals, Inc. (OPTR) 15-Nov-11Acquisition (other)
Duplicate
530$9.72$5,153.72< 1%
815.87K to 816.4K
17-May-11 3:42 PM
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Optimer Pharmaceuticals, Inc. (OPTR) 16-May-11Acquisition (other)
Duplicate
1,971$7.71$15,195.40< 1%
813.9K to 815.87K
27-Apr-11 6:05 PM
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Optimer Pharmaceuticals, Inc. (OPTR) 25-Apr-11Option Exercise 100,000$1.08$108,340.0026%
378.26K to 478.26K
16-Nov-10 4:35 PM
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Optimer Pharmaceuticals, Inc. (OPTR) 15-Nov-10Acquisition (other)
Duplicate
1,075$7.71$8,287.71< 1%
712.83K to 713.9K
02-Jun-10 2:40 PM
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Optimer Pharmaceuticals, Inc. (OPTR) 01-Jun-10Option Exercise 6,922$2.17$15,020.70< 1%
705.9K to 712.83K
17-May-10 6:55 PM
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Optimer Pharmaceuticals, Inc. (OPTR) 17-May-10Acquisition (other)
Duplicate
1,401$9.57$13,409.00< 1%
704.5K to 705.9K
07-May-10 4:06 PM
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Optimer Pharmaceuticals, Inc. (OPTR) 05-May-10Grant 65,000----10%
639.5K to 704.5K
07-Apr-10 12:41 PM
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Optimer Pharmaceuticals, Inc. (OPTR) 29-Mar-10Gift 4,615----(1%)
310.95K to 306.33K
05-Jan-10 4:16 PM
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Optimer Pharmaceuticals, Inc. (OPTR) 04-Jan-10Option Exercise 90,553$1.08$98,105.1018%
493.75K to 584.31K
05-Jan-10 4:16 PM
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Optimer Pharmaceuticals, Inc. (OPTR) 04-Jan-10Option Exercise
Duplicate
59,811$1.08$64,799.2010%
584.31K to 644.12K
29-Dec-09 11:57 AM
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Optimer Pharmaceuticals, Inc. (OPTR) 29-Dec-09Market Purchase 8,000$10.80$86,400.002%
485.75K to 493.75K
20%
29-Dec-09 11:57 AM
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Optimer Pharmaceuticals, Inc. (OPTR) 28-Dec-09Market Purchase 10,000$10.85$108,500.002%
475.75K to 485.75K
19%
25-Nov-09 4:51 PM
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Optimer Pharmaceuticals, Inc. (OPTR) 25-Nov-09Market Purchase 15,000$11.52$172,740.003%
460.75K to 475.75K
12%
18-Nov-09 1:19 PM
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Optimer Pharmaceuticals, Inc. (OPTR) 16-Nov-09Acquisition (other) 1,715$9.91$16,997.40< 1%
457.72K to 459.44K
18-Nov-09 1:19 PM
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Optimer Pharmaceuticals, Inc. (OPTR) 16-Nov-09Acquisition (other)
Duplicate
1,316$9.91$13,042.90< 1%
459.44K to 460.75K
18-May-09 4:32 PM
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Optimer Pharmaceuticals, Inc. (OPTR) 15-May-09Acquisition (other) 2,351$7.22$16,986.00< 1%
453.59K to 455.94K
18-May-09 4:32 PM
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Optimer Pharmaceuticals, Inc. (OPTR) 15-May-09Acquisition (other)
Duplicate
1,785$7.22$12,896.60< 1%
455.94K to 457.72K
09-Jan-09 2:20 PM
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Optimer Pharmaceuticals, Inc. (OPTR) 07-Jan-09Option Exercise 30,769$0.22$6,667.648%
402.05K to 432.82K
4861%
09-Jan-09 2:20 PM
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Optimer Pharmaceuticals, Inc. (OPTR) 07-Jan-09Option Exercise
Duplicate
20,769$0.65$13,499.805%
432.82K to 453.59K
1554%
31-Dec-08 11:23 AM
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Optimer Pharmaceuticals, Inc. (OPTR) 29-Dec-08Gift 22,200----(5%)
424.25K to 402.05K
31-Dec-08 11:23 AM
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Optimer Pharmaceuticals, Inc. (OPTR) 17-Nov-08Acquisition (other) 1,181$6.18$7,297.99< 1%
421.05K to 422.23K
62%
31-Dec-08 11:23 AM
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Optimer Pharmaceuticals, Inc. (OPTR) 17-Nov-08Acquisition (other)
Duplicate
2,023$6.18$12,501.10< 1%
422.23K to 424.25K
62%
17-Jun-08 12:49 PM
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Optimer Pharmaceuticals, Inc. (OPTR) 13-Jun-08Market Purchase 5,000$7.00$35,000.001%
416.05K to 421.05K
83%
16-May-08 1:06 PM
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Optimer Pharmaceuticals, Inc. (OPTR) 15-May-08Private Purchase 2,500$6.03$15,087.50< 1%
411.5K to 414.0K
18%
16-May-08 1:06 PM
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Optimer Pharmaceuticals, Inc. (OPTR) 15-May-08Private Purchase
Duplicate
2,042$6.03$12,323.50< 1%
414.0K to 416.05K
18%
03-Jan-08 12:53 PM
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Optimer Pharmaceuticals, Inc. (OPTR) 31-Dec-07Gift 7,000----(2%)
418.5K to 411.5K
19-Nov-07 11:52 AM
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Optimer Pharmaceuticals, Inc. (OPTR) 15-Nov-07Private Purchase 1,000$5.95$5,950.00< 1%
416.5K to 417.5K
19-Nov-07 11:52 AM
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Optimer Pharmaceuticals, Inc. (OPTR) 15-Nov-07Private Purchase
Duplicate
1,000$5.95$5,950.00< 1%
417.5K to 418.5K
14-Sep-07 4:15 PM
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Optimer Pharmaceuticals, Inc. (OPTR) 12-Sep-07Grant 2,500----1%
169.58K to 172.08K
10-Aug-07 11:02 AM
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Optimer Pharmaceuticals, Inc. (OPTR) 09-Aug-07Market Purchase 30,000$8.20$246,000.0021%
139.58K to 169.58K
56%
08-Aug-07 2:15 PM
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Optimer Pharmaceuticals, Inc. (OPTR) 06-Aug-07Market Purchase 10,000$9.05$90,500.008%
129.58K to 139.58K
41%
18-Jul-07 1:32 PM
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Optimer Pharmaceuticals, Inc. (OPTR) 16-Jul-07Market Purchase 10,000$9.86$98,600.008%
119.58K to 129.58K
30%
14-Feb-07 8:19 PM
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Optimer Pharmaceuticals, Inc. (OPTR) 14-Feb-07Conversion
Duplicate
214,147----4640%
4.62K to 218.76K
14-Feb-07 8:19 PM
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Optimer Pharmaceuticals, Inc. (OPTR) 14-Feb-07Private Purchase 114,965$7.00$804,755.0053%
218.76K to 333.73K
14-Feb-07 8:19 PM
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Optimer Pharmaceuticals, Inc. (OPTR) 14-Feb-07Exercise (in-the money or at-the-money)
Duplicate
30,276$1.08$32,698.109%
333.73K to 364.0K