- Corporate Officers - B
- Brown Matthew Charles
Insider Trading History of Brown Matthew Charles
The following table details the insider trading activities
(stock purchases, stock sales, and stock option exercises) of Brown Matthew Charles since 2019.
This trader's CIK number is 1766979.
At the time of last reporting, Brown Matthew Charles was the Chief Financial Officer of Tenable Holdings, Inc.. (stock ticker symbol TENB).
Also see all insider trading activities at Tenable Holdings, Inc..
Note that in the past
Brown Matthew Charles also reported insider trading activities as an insider of the following companies:
Yearly summary of insider trading at Gen Digital Inc. (NLOK) by Brown Matthew Charles
| | Insider Buying | Insider Sales | Option Exercises |
|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
|---|
| 2020 | NLOK | 0 | $0 | 34,748 | $783,179 | 0 | $0 |
| 2019 | NLOK | 0 | $0 | 5,393 | $118,106 | 0 | $0 |
Yearly summary of insider trading at Tenable Holdings, Inc. (TENB) by Brown Matthew Charles
| | Insider Buying | Insider Sales | Option Exercises |
|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
|---|
| 2025 | TENB | 0 | $0 | 0 | $0 | 14,544 | $0 |
Yearly summary of insider trading at Altair Engineering Inc. (ALTR) by Brown Matthew Charles
| | Insider Buying | Insider Sales | Option Exercises |
|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
|---|
| 2025 | ALTR | 0 | $0 | 4,553 | $507,735 | 0 | $0 |
| 2024 | ALTR | 0 | $0 | 5,246 | $440,306 | 0 | $0 |
| 2023 | ALTR | 0 | $0 | 3,477 | $221,971 | 0 | $0 |
| 2022 | ALTR | 0 | $0 | 2,298 | $148,335 | 0 | $0 |
Insider trading activities at 3 companies by Brown Matthew Charles:
1. Gen Digital Inc. (NLOK)
2. Tenable Holdings, Inc. (TENB)
3. Altair Engineering Inc. (ALTR)
Table 1. Insider trading of Gen Digital Inc. (NLOK) by Brown Matthew Charles
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|
| 2020-08-17 | NLOK | Sale | 531 | 22.94 | 12,181 |
| 2020-08-11 | NLOK | Sale | 31,598 | 22.63 | 714,967 |
| 2020-02-18 | NLOK | Sale | 1,766 | 20.45 | 36,114 |
| 2019-08-16 | NLOK | Sale | 853 | 23.35 | 19,917 |
| 2019-03-07 | SYMC | Sale | 5,393 | 21.90 | 118,106 |
Table 2. Insider trading of Tenable Holdings, Inc. (TENB) by Brown Matthew Charles
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|
| 2025-11-21 | TENB | Option Ex | 14,544 | .00 | 0 |
Table 3. Insider trading of Altair Engineering Inc. (ALTR) by Brown Matthew Charles
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|
| 2025-03-03 | ALTR | Sale | 742 | 111.45 | 82,695 |
| 2025-02-26 | ALTR | Sale | 3,811 | 111.53 | 425,040 |
| 2024-03-04 | ALTR | Sale | 883 | 85.32 | 75,337 |
| 2024-02-28 | ALTR | Sale | 4,363 | 83.65 | 364,969 |
| 2023-03-01 | ALTR | Sale | 3,477 | 63.84 | 221,971 |
| 2022-03-07 | ALTR | Sale | 2,298 | 64.55 | 148,335 |
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 Brown Matthew Charles
(Chief Financial Officer of Tenable Holdings, Inc. at the time of this reporting) see
the Securities and Exchange Commission (SEC) website.