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"Insiders might sell their shares for any number of reasons, but they buy them for only one:
they think the price will rise" - Peter Lynch ==>> What is insider trading>> |

| Transaction & Date | Reported Date |
Company | Symbol | Insider Relationship |
Shares Traded | Average Price | Total Amount |
Shares Ownership |
Filing |
| 2007-08-02 Sale |
2007-08-03 4:44 pm | DEXCOM INC | DXCM | Lucas Donald A (Director) | 3,296 | $7.1 | $23,402 | 0 (Indirect) | View |
| 2007-06-07 Sale(A) |
2007-07-03 7:17 pm | DEXCOM INC | DXCM | Lucas Donald A (Director) | 525,682 | $6.62 | $3,480,015 | 3,296 (Indirect) |
View |
| 2007-03-15 Sale |
2007-03-19 8:22 pm |
DEXCOM INC | DXCM | Lucas Donald A (Director) | 4,000 | $7.173 | $28,690 | 0 (Indirect) |
View |
| 2006-12-04 Sale |
2006-12-05 6:57 pm | DEXCOM INC | DXCM | Lucas Donald A (Director) | 17,363 | $11.71 | $203,265 | 614 (Direct) |
View |
| 2006-10-25 Sale | 2006-10-27 7:11 pm |
DEXCOM INC | DXCM | Lucas Donald A (Director) | 325,823 | $9.02 | $2,938,923 | 0 (Indirect) | View |
| 2006-08-28 Sale | 2006-08-29 12:44 pm | DEXCOM INC | DXCM | Lucas Donald A (Director) | 488 | $15.93 | $7,772 | 0 (Indirect) |
View |
| 2006-08-18 Sale |
2006-08-21 2:35 pm | DEXCOM INC | DXCM | Lucas Donald A (Director) | 176 | $14.18 | $2,496 | 17,977 (Direct) | View |
| 2006-08-14 Sale | 2006-08-14 5:32 pm |
DEXCOM INC | DXCM | Lucas Donald A (Director) | 488 | $15.93 | $7,772 | 18,153 (Direct) | View |
| 2006-08-10- -2008-08-10 Sale | 2006-08-11 5:45 pm | DEXCOM INC | DXCM | Lucas Donald A (Director) | 10,000 | $11.26 | $112,569 | 18,641 (Direct) | View |
| 2006-05-26 Sale | 2006-06-15 12:19 pm | DEXCOM INC | DXCM | Lucas Donald A (Director) | 279 | $21.62 | $6,032 | 28,278 (Direct) |
View |
| 2006-03-08 Sale | 2006-03-08 12:33 pm | DEXCOM INC | DXCM | Lucas Donald A (Director) | 538 | $18.06 | $9,716 | 0 (Direct Indirect) |
View |
| 2006-03-02 Sale | 2006-03-02 5:14 pm | DEXCOM INC | DXCM | Lucas Donald A (Director) | 235,823 | $18.92 | $4,461,771 | 60,823 (Indirect) |
View |
| 2006-02-13 Sale |
2006-02-14 12:07 pm | DEXCOM INC | DXCM | Lucas Donald A (Director) | 690 | $14.5 | $10,005 | 0 (Direct Indirect) |
View |
| 2006-01-20- -2006-01-23 Sale |
2006-01-24 5:11 pm |
DEXCOM INC | DXCM | Lucas Donald A (Director) | 634 | $14.27 | $9,049 | 0 (Direct Indirect) |
View |
| 2005-04-13 Purchase |
2005-04-15 6:04 pm |
DEXCOM INC | DXCM | Lucas Donald A (Director) | 6,500 | $12 | $78,000 | 6,500 (Direct) |
View |
| Transaction & Date |
Reported Date |
Company | Symbol | Insider Relationship | Shares Traded |
Average Price | Total Amount |
Shares Ownership | Filing |
| 2008-05-19 Option Award | 2008-05-21 7:18 pm | DEXCOM INC | DXCM | Lucas Donald A (Director) | 1,966 | $7.63 | $15,001 | 5,127 (Direct) |
View |
| 2007-05-23- -2007-06-07 Option Award(A) |
2007-07-03 7:17 pm | DEXCOM INC | DXCM | Lucas Donald A (Director) | 2,292 | $7.238 | $16,589 | 3,161 (Direct) |
View |
| 2007-05-23 Option Award |
2007-05-25 8:18 pm | DEXCOM INC | DXCM | Lucas Donald A (Director) | 2,052 | $7.31 | $15,000 | 2,666 (Direct) | View |
| 2005-04-20 Gift |
2007-03-19 8:22 pm |
DEXCOM INC | DXCM | Lucas Donald A (Director) | 4,000 | $0 | $0 | 4,000 (Indirect) |
View |
| 2006-08-28- -2008-08-28 Option Award | 2006-08-29 12:44 pm | DEXCOM INC | DXCM | Lucas Donald A (Director) | 488 | $15.93 | $7,772 | 793,978 (Indirect) |
View |
| 2006-08-14 Option Award |
2006-08-14 5:32 pm | DEXCOM INC | DXCM | Lucas Donald A (Director) | 488 | $15.93 | $7,772 | 488 (Indirect) |
View |
| 2006-07-03 Option Award |
2006-07-06 4:51 pm | DEXCOM INC | DXCM | Lucas Donald A (Director) | 363 | $13.79 | $5,006 | 28,641 (Direct) |
View |
| 2006-06-19- -2007-06-19 Option Award Option Sale | 2006-06-21 1:13 pm | DEXCOM INC | DXCM | Lucas Donald A (Director) | 558 | $21.62 | $12,064 | 793,490 (Indirect) |
View |
| 2006-05-26 Option Award | 2006-06-15 12:19 pm |
DEXCOM INC | DXCM | Lucas Donald A (Director) | 279 | $21.62 | $6,032 | 279 (Indirect) |
View |
| 2006-03-02- -2006-05-15 Option Award |
2006-05-17 2:29 pm |
DEXCOM INC | DXCM | Lucas Donald A (Director) | 488 | $9.091 | $4,436 | 28,557 (Direct) | View |
| 2006-03-18- -2006-04-18 Option Award | 2006-04-19 2:04 pm | DEXCOM INC | DXCM | Lucas Donald A (Director) | 279 | $21.62 | $6,032 | 28,069 (Direct) | View |
| 2006-03-08 Option Award Option Sale | 2006-03-08 12:33 pm | DEXCOM INC | DXCM | Lucas Donald A (Director) | 706 | $17.8 | $12,567 | 793,211 (Indirect) | View |
| 2006-02-23 Option Award |
2006-02-28 5:14 pm |
DEXCOM INC | DXCM | Lucas Donald A (Director) | 59 | $17.04 | $1,005 | 28,101 (Direct) | View |
| 2006-02-09- -2006-02-13 Option Award |
2006-02-14 12:07 pm |
DEXCOM INC | DXCM | Lucas Donald A (Director) | 942 | $15.42 | $14,528 | 967,900 (Direct Indirect) | View |
| 2005-01-23- -2006-01-23 Option Award |
2006-01-24 5:11 pm | DEXCOM INC | DXCM | Lucas Donald A (Director) | 634 | $14.27 | $9,049 | 967,555 (Indirect) | View |
| 2006-01-03 Option Award | 2006-01-05 1:31 pm |
DEXCOM INC | DXCM | Lucas Donald A (Director) | 345 | $14.5 | $5,002 | 28,452 (Direct) | View |
| 2005-09-26- -2005-12-13 Other | 2005-12-13 5:16 pm |
DEXCOM INC | DXCM | Lucas Donald A (Director) | 9,056 | $13.8 | $124,945 | 965,682 (Direct Indirect) | View |
| 2005-11-07 Option Award |
2005-11-08 12:18 pm | DEXCOM INC | DXCM | Lucas Donald A (Director) | 4,205 | $4.651 | $19,556 | 29,346 (Direct) | View |
| 2005-09-23- -2005-11-04 Option Award |
2005-11-04 4:32 pm | DEXCOM INC | DXCM | Lucas Donald A (Director) | 18,266 | $5.423 | $99,056 | 25,141 (Direct) | View |
| 2005-08-16 Option Award | 2005-08-18 7:47 pm | DEXCOM INC | DXCM | Lucas Donald A (Director) | 98 | $10.25 | $1,004 | 6,875 (Direct) | View |
| 2005-07-21- -2005-08-08 Option Award | 2005-08-09 6:39 pm | DEXCOM INC | DXCM | Lucas Donald A (Director) | 277 | $10.87 | $3,012 | 6,777 (Direct) | View |
| 2005-04-19 Purchase | 2005-04-21 5:06 pm |
DEXCOM INC | DXCM | Lucas Donald A (Director) | 1,171,229 | $0 | $0 | 973,182 (Indirect) |
View |
| Transaction & Date |
Reported Date | Exercisable Expiration |
Company | Symbol | Insider Relationship |
Shares Traded | Conversion Price |
Shares Ownership |
Filing |
| 2008-05-19 Option Award | 2008-05-21 7:18 pm |
N/A 2018-05-19 | DEXCOM INC | DXCM | Lucas Donald A (Director) | 31,464 | $7.63 | 31,464 (Direct) |
View |
| 2007-05-23 Option Award | 2007-05-25 8:18 pm | N/A 2017-05-23 |
DEXCOM INC | DXCM | Lucas Donald A (Director) | 31,890 | $7.31 | 31,890 (Direct) | View |
| 2006-05-15 Option Award |
2006-05-17 2:29 pm | N/A 2016-05-15 |
DEXCOM INC | DXCM | Lucas Donald A (Director) | 10,000 | $21.81 | 45,000 (Direct) | View |
| 2006-04-13 Option Award | 2006-04-17 3:20 pm | N/A 2016-04-13 |
DEXCOM INC | DXCM | Lucas Donald A (Director) | 10,000 | $20.38 | 35,000 (Direct) |
View |
| 2005-04-13 Option Award |
2005-11-04 4:32 pm |
N/A 2015-04-15 |
DEXCOM INC | DXCM | Lucas Donald A (Director) | 25,000 | $12 | 25,000 (Direct) |
View |
| 2005-04-19 Purchase | 2005-04-21 5:06 pm |
N/A N/A | DEXCOM INC | DXCM | Lucas Donald A (Director) | 130,434 | $0 | 0 (Indirect) | View |
| 2005-04-19 Purchase | 2005-04-21 5:06 pm | N/A N/A | DEXCOM INC | DXCM | Lucas Donald A (Director) | 22,368 | $0 | 0 (Indirect) | View |
| 2005-04-19 Purchase |
2005-04-21 5:06 pm |
N/A N/A |
DEXCOM INC | DXCM | Lucas Donald A (Director) | 217,391 | $0 | 0 (Indirect) | View |
| 2005-04-19 Purchase |
2005-04-21 5:06 pm | N/A N/A |
DEXCOM INC | DXCM | Lucas Donald A (Director) | 25,903 | $0 | 0 (Indirect) | View |
| 2005-04-19 Purchase |
2005-04-21 5:06 pm | N/A N/A |
DEXCOM INC | DXCM | Lucas Donald A (Director) | 1,739,130 | $0 | 0 (Indirect) |
View |
| 2005-04-19 Purchase |
2005-04-21 5:06 pm | N/A N/A | DEXCOM INC | DXCM | Lucas Donald A (Director) | 207,234 | $0 | 0 (Indirect) | View |
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