- Corporate Officers - K
- Killefer Nancy
Insider Trading History of Killefer Nancy
The following table details the insider trading activities
(stock purchases, stock sales, and stock option exercises) of Killefer Nancy since 2014.
This trader's CIK number is 1584637.
At the time of last reporting, Killefer Nancy was the Officer of Certara, Inc.. (stock ticker symbol CERT).
Also see all insider trading activities at Certara, Inc..
Note that in the past
Killefer Nancy also reported insider trading activities as an insider of the following companies:
Yearly summary of insider trading at Advisory Board Co (ABCO) by Killefer Nancy
| | Insider Buying | Insider Sales | Option Exercises |
|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
|---|
| 2017 | ABCO | 0 | $0 | 0 | $0 | 6,189 | $0 |
| 2016 | ABCO | 0 | $0 | 0 | $0 | 4,563 | $0 |
Yearly summary of insider trading at Certara, Inc. (CERT) by Killefer Nancy
| | Insider Buying | Insider Sales | Option Exercises |
|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
|---|
| 2025 | CERT | 0 | $0 | 0 | $0 | 11,928 | $0 |
| 2024 | CERT | 0 | $0 | 0 | $0 | 8,663 | $0 |
| 2023 | CERT | 0 | $0 | 0 | $0 | 9,067 | $0 |
Yearly summary of insider trading at Computer Sciences Corp (CSC) by Killefer Nancy
| | Insider Buying | Insider Sales | Option Exercises |
|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
|---|
| 2015 | CSC | 0 | $0 | 0 | $0 | 3,900 | $0 |
| 2014 | CSC | 0 | $0 | 0 | $0 | 2,600 | $0 |
Yearly summary of insider trading at Meta Platforms, Inc. (META) by Killefer Nancy
| | Insider Buying | Insider Sales | Option Exercises |
|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
|---|
| 2025 | META | 0 | $0 | 0 | $0 | 802 | $0 |
| 2024 | META | 0 | $0 | 0 | $0 | 2,144 | $0 |
| 2023 | META | 0 | $0 | 0 | $0 | 3,102 | $0 |
| 2022 | META | 0 | $0 | 0 | $0 | 2,387 | $0 |
| 2021 | META | 0 | $0 | 0 | $0 | 2,937 | $0 |
| 2020 | META | 0 | $0 | 0 | $0 | 872 | $0 |
Yearly summary of insider trading at Csra Inc. (CSRA) by Killefer Nancy
| | Insider Buying | Insider Sales | Option Exercises |
|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
|---|
| 2017 | CSRA | 0 | $0 | 0 | $0 | 7,700 | $0 |
| 2016 | CSRA | 0 | $0 | 0 | $0 | 3,900 | $0 |
Insider trading activities at 5 companies by Killefer Nancy:
1. Advisory Board Co (ABCO)
2. Certara, Inc. (CERT)
3. Computer Sciences Corp (CSC)
4. Meta Platforms, Inc. (META)
5. Csra Inc. (CSRA)
Table 1. Insider trading of Advisory Board Co (ABCO) by Killefer Nancy
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|
| 2017-09-06 | ABCO | Option Ex | 1,766 | .00 | 0 |
| 2017-06-07 | ABCO | Option Ex | 4,423 | .00 | 0 |
| 2016-09-06 | ABCO | Option Ex | 1,766 | .00 | 0 |
| 2016-06-22 | ABCO | Option Ex | 2,797 | .00 | 0 |
Table 2. Insider trading of Certara, Inc. (CERT) by Killefer Nancy
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|
| 2025-05-21 | CERT | Option Ex | 11,928 | .00 | 0 |
| 2024-05-21 | CERT | Option Ex | 8,663 | .00 | 0 |
| 2023-05-17 | CERT | Option Ex | 9,067 | .00 | 0 |
Table 3. Insider trading of Computer Sciences Corp (CSC) by Killefer Nancy
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|
| 2015-11-30 | CSC | Option Ex | 1,200 | .00 | 0 |
| 2015-08-14 | CSC | Option Ex | 2,700 | .00 | 0 |
| 2014-08-13 | CSC | Option Ex | 2,600 | .00 | 0 |
Table 4. Insider trading of Meta Platforms, Inc. (META) by Killefer Nancy
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|
| 2025-05-15 | META | Option Ex | 802 | .00 | 0 |
| 2024-05-15 | META | Option Ex | 1,843 | .00 | 0 |
| 2024-02-15 | META | Option Ex | 301 | .00 | 0 |
| 2023-11-15 | META | Option Ex | 301 | .00 | 0 |
| 2023-08-15 | META | Option Ex | 301 | .00 | 0 |
| 2023-05-15 | META | Option Ex | 2,199 | .00 | 0 |
| 2023-02-15 | META | Option Ex | 301 | .00 | 0 |
| 2022-11-15 | META | Option Ex | 301 | .00 | 0 |
| 2022-08-15 | META | Option Ex | 301 | .00 | 0 |
| 2022-05-15 | FB | Option Ex | 1,484 | .00 | 0 |
| 2022-02-15 | FB | Option Ex | 301 | .00 | 0 |
| 2021-11-15 | FB | Option Ex | 301 | .00 | 0 |
| 2021-08-15 | FB | Option Ex | 301 | .00 | 0 |
| 2021-05-15 | FB | Option Ex | 2,034 | .00 | 0 |
| 2021-02-15 | FB | Option Ex | 301 | .00 | 0 |
| 2020-11-15 | FB | Option Ex | 301 | .00 | 0 |
| 2020-08-15 | FB | Option Ex | 301 | .00 | 0 |
| 2020-05-15 | FB | Option Ex | 270 | .00 | 0 |
Table 5. Insider trading of Csra Inc. (CSRA) by Killefer Nancy
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|
| 2017-08-08 | CSRA | Option Ex | 7,700 | .00 | 0 |
| 2016-08-09 | CSRA | Option Ex | 3,900 | .00 | 0 |
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 Killefer Nancy
(Officer of Certara, Inc. at the time of this reporting) see
the Securities and Exchange Commission (SEC) website.