- Corporate Officers - D
- Dier Mardi
Insider Trading History of Dier Mardi
The following table details the insider trading activities
(stock purchases, stock sales, and stock option exercises) of Dier Mardi since 2014.
This trader's CIK number is 1574591.
At the time of last reporting, Dier Mardi was the SVP and CFO of Madrigal Pharmaceuticals, Inc.. (stock ticker symbol MDGL).
Also see all insider trading activities at Madrigal Pharmaceuticals, Inc..
Note that in the past
Dier Mardi also reported insider trading activities as an insider of the following companies:
Yearly summary of insider trading at Prelude Therapeutics Inc (PRLD) by Dier Mardi
| | Insider Buying | Insider Sales | Option Exercises |
|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
|---|
| 2020 | PRLD | 10,000 | $190,000 | 0 | $0 | 0 | $0 |
Yearly summary of insider trading at Madrigal Pharmaceuticals, Inc. (MDGL) by Dier Mardi
| | Insider Buying | Insider Sales | Option Exercises |
|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
|---|
| 2025 | MDGL | 0 | $0 | 2,219 | $720,106 | 0 | $0 |
Yearly summary of insider trading at Portola Pharmaceuticals Inc (PTLA) by Dier Mardi
| | Insider Buying | Insider Sales | Option Exercises |
|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
|---|
| 2019 | PTLA | 0 | $0 | 40,486 | $1,513,812 | 0 | $0 |
| 2018 | PTLA | 0 | $0 | 0 | $0 | 35,000 | $0 |
| 2017 | PTLA | 0 | $0 | 126,977 | $7,021,223 | 126,977 | $1,984,381 |
| 2016 | PTLA | 0 | $0 | 0 | $0 | 15,152 | $50,001 |
| 2015 | PTLA | 0 | $0 | 63,763 | $2,685,749 | 63,763 | $425,720 |
| 2014 | PTLA | 0 | $0 | 34,824 | $901,910 | 0 | $0 |
Yearly summary of insider trading at Acelyrin, Inc. (SLRN) by Dier Mardi
| | Insider Buying | Insider Sales | Option Exercises |
|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
|---|
| 2023 | SLRN | 7,306 | $131,508 | 0 | $0 | 0 | $0 |
Yearly summary of insider trading at Ultragenyx Pharmaceutical Inc. (RARE) by Dier Mardi
| | Insider Buying | Insider Sales | Option Exercises |
|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
|---|
| 2022 | RARE | 0 | $0 | 6,067 | $261,264 | 0 | $0 |
| 2021 | RARE | 0 | $0 | 6,738 | $552,522 | 0 | $0 |
Insider trading activities at 5 companies by Dier Mardi:
1. Prelude Therapeutics Inc (PRLD)
2. Madrigal Pharmaceuticals, Inc. (MDGL)
3. Portola Pharmaceuticals Inc (PTLA)
4. Acelyrin, Inc. (SLRN)
5. Ultragenyx Pharmaceutical Inc. (RARE)
Table 1. Insider trading of Prelude Therapeutics Inc (PRLD) by Dier Mardi
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|
| 2020-09-29 | PRLD | Buy | 10,000 | 19.00 | 190,000 |
Table 2. Insider trading of Madrigal Pharmaceuticals, Inc. (MDGL) by Dier Mardi
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|
| 2025-03-10 | MDGL | Sale | 258 | 323.04 | 83,344 |
| 2025-03-03 | MDGL | Sale | 1,961 | 324.71 | 636,762 |
Table 3. Insider trading of Portola Pharmaceuticals Inc (PTLA) by Dier Mardi
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|
| 2019-04-04 | PTLA | Sale | 40,486 | 37.39 | 1,513,812 |
| 2018-08-31 | PTLA | Option Ex | 17,500 | .00 | 0 |
| 2018-07-28 | PTLA | Option Ex | 17,500 | .00 | 0 |
| 2017-07-11 | PTLA | Option Ex | 23,350 | 25.08 | 585,618 |
| 2017-07-11 | PTLA | Sale | 23,350 | 60.00 | 1,401,000 |
| 2017-06-27 | PTLA | Option Ex | 93,392 | 14.13 | 1,319,442 |
| 2017-06-27 | PTLA | Sale | 93,392 | 55.79 | 5,210,619 |
| 2017-03-15 | PTLA | Option Ex | 10,235 | 7.75 | 79,321 |
| 2017-03-15 | PTLA | Sale | 10,235 | 40.02 | 409,604 |
| 2016-08-01 | PTLA | Option Ex | 15,152 | 3.30 | 50,001 |
| 2015-09-18 | PTLA | Option Ex | 8,912 | 6.40 | 57,036 |
| 2015-09-18 | PTLA | Sale | 8,912 | 55.00 | 490,160 |
| 2015-06-08 | PTLA | Option Ex | 16,119 | 4.55 | 73,341 |
| 2015-06-08 | PTLA | Sale | 16,119 | 43.00 | 693,117 |
| 2015-05-27 | PTLA | Sale | 6,076 | 41.00 | 249,116 |
| 2015-05-27 | PTLA | Option Ex | 6,076 | 5.00 | 30,380 |
| 2015-05-12 | PTLA | Option Ex | 13,290 | 9.50 | 126,255 |
| 2015-05-12 | PTLA | Sale | 13,290 | 37.88 | 503,451 |
| 2015-05-11 | PTLA | Option Ex | 13,674 | 8.25 | 112,810 |
| 2015-05-11 | PTLA | Sale | 13,674 | 38.21 | 522,510 |
| 2015-02-23 | PTLA | Sale | 5,692 | 39.95 | 227,395 |
| 2015-02-23 | PTLA | Option Ex | 5,692 | 4.55 | 25,898 |
| 2014-11-25 | PTLA | Sale | 1,118 | 28.23 | 31,561 |
| 2014-08-25 | PTLA | Sale | 5,000 | 26.11 | 130,545 |
| 2014-07-25 | PTLA | Sale | 5,000 | 24.11 | 120,570 |
| 2014-06-25 | PTLA | Sale | 5,000 | 28.52 | 142,600 |
| 2014-06-18 | PTLA | Sale | 3,706 | 29.95 | 110,994 |
| 2014-05-29 | PTLA | Sale | 5,000 | 23.00 | 115,000 |
| 2014-04-25 | PTLA | Sale | 5,000 | 24.44 | 122,205 |
| 2014-03-25 | PTLA | Sale | 5,000 | 25.69 | 128,435 |
Table 4. Insider trading of Acelyrin, Inc. (SLRN) by Dier Mardi
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|
| 2023-05-09 | SLRN | Buy | 7,306 | 18.00 | 131,508 |
Table 5. Insider trading of Ultragenyx Pharmaceutical Inc. (RARE) by Dier Mardi
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|
| 2022-10-14 | RARE | Sale | 1,629 | 40.16 | 65,420 |
| 2022-10-12 | RARE | Sale | 3,484 | 38.22 | 133,158 |
| 2022-03-01 | RARE | Sale | 534 | 66.62 | 35,575 |
| 2022-03-03 | RARE | Sale | 420 | 64.55 | 27,111 |
| 2021-10-12 | RARE | Sale | 3,477 | 82.79 | 287,860 |
| 2021-10-14 | RARE | Sale | 3,261 | 81.16 | 264,662 |
Insider trading activities including stock purchases, stock sales, and option exercises
listed in the above table cannot be completely guaranteed as to their accuracy.
For more information regarding the trades made by Dier Mardi
(SVP and CFO of Madrigal Pharmaceuticals, Inc. at the time of this reporting) see
the Securities and Exchange Commission (SEC) website.