HOLX
insider transactionsHOLOGIC INC — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
No open-market buys or sells this period. The trades below are grants, option exercises and gifts, which carry no market price.
Net buy / sell volume
Not enough data to chart yet.
Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
-
Other·D
Jan Verstreken KEY
Group President, International
—
31.4K sh
Own -100%
-
Grant·A
Jan Verstreken KEY
Group President, International
—
31.4K sh
Own New
-
Other·D
Jan Verstreken KEY
Group President, International
—
18.7K sh
Own -100%
-
Other·D
Jan Verstreken KEY
Group President, International
—
20.1K sh
Own -100%
-
Other·D
Jan Verstreken KEY
Group President, International
—
19.3K sh
Own -100%
-
Other·D
Jan Verstreken KEY
Group President, International
—
17.8K sh
Own -100%
-
Other·D
Jan Verstreken KEY
Group President, International
—
12.5K sh
Own -100%
-
Other·D
Jan Verstreken KEY
Group President, International
—
29.0K sh
Own -100%
-
Other·D
Jan Verstreken KEY
Group President, International
—
15.4K sh
Own -100%
-
Other·D
Jan Verstreken KEY
Group President, International
—
14.0K sh
Own -100%
-
Other·D
Jan Verstreken KEY
Group President, International
—
12.5K sh
Own -100%
-
Other·D
Jan Verstreken KEY
Group President, International
—
7.6K sh
Own -100%
-
Other·D
Jan Verstreken KEY
Group President, International
—
134.0K sh
Own -100%
-
Other·D
President, GYN Surgical
—
8.4K sh
Own -100%
-
Grant·A
President, GYN Surgical
—
8.4K sh
Own New
-
Other·D
President, GYN Surgical
—
8.4K sh
Own -100%
-
Other·D
President, GYN Surgical
—
2.5K sh
Own -100%
-
Other·D
President, GYN Surgical
—
5.0K sh
Own -100%
-
Other·D
President, GYN Surgical
—
3.9K sh
Own -100%
-
Other·D
President, GYN Surgical
—
2.3K sh
Own -100%
-
Other·D
President, GYN Surgical
—
17.6K sh
Own -100%
-
Other·D
President, Diag. Solutions
—
22.6K sh
Own -100%
-
Grant·A
President, Diag. Solutions
—
22.6K sh
Own New
-
Other·D
President, Diag. Solutions
—
18.7K sh
Own -100%
-
Other·D
President, Diag. Solutions
—
10.0K sh
Own -100%
-
Other·D
President, Diag. Solutions
—
4.1K sh
Own -100%
-
Other·D
President, Diag. Solutions
—
3.8K sh
Own -100%
-
Other·D
President, Diag. Solutions
—
41.5K sh
Own -100%
-
Other·D
Chief Financial Officer
—
42.7K sh
Own -100%
-
Grant·A
Chief Financial Officer
—
42.7K sh
Own New
-
Other·D
Chief Financial Officer
—
28.0K sh
Own -100%
-
Other·D
Chief Financial Officer
—
25.1K sh
Own -100%
-
Other·D
Chief Financial Officer
—
21.7K sh
Own -100%
-
Other·D
Chief Financial Officer
—
23.8K sh
Own -100%
-
Other·D
Chief Financial Officer
—
23.8K sh
Own -100%
-
Other·D
Chief Financial Officer
—
30.8K sh
Own -100%
-
Other·D
Chief Financial Officer
—
150.7K sh
Own -100%
-
Other·D
Chief Operating Officer
—
46.2K sh
Own -100%
-
Grant·A
Chief Operating Officer
—
46.2K sh
Own New
-
Other·D
Chief Operating Officer
—
32.7K sh
Own -100%
-
Other·D
Chief Operating Officer
—
25.1K sh
Own -100%
-
Other·D
Chief Operating Officer
—
11.6K sh
Own -100%
-
Other·D
Chief Operating Officer
—
3.0K sh
Own -100%
-
Other·D
Chief Operating Officer
—
77.7K sh
Own -100%
-
Other·D
General Counsel
—
3.5K sh
Own -100%
-
Grant·A
General Counsel
—
3.5K sh
Own New
-
Other·D
General Counsel
—
4.7K sh
Own -100%
-
Other·D
General Counsel
—
7.5K sh
Own -100%
-
Other·D
General Counsel
—
6.0K sh
Own -100%
-
Other·D
General Counsel
—
5.1K sh
Own -100%
-
Other·D
General Counsel
—
5.9K sh
Own -100%
-
Other·D
General Counsel
—
6.1K sh
Own -100%
-
Other·D
General Counsel
—
2.2K sh
Own -100%
-
Other·D
General Counsel
—
28.1K sh
Own -100%
-
Other·D
Mark W. Horvath KEY
President, Breast & Skeletal
—
7.8K sh
Own -100%
-
Grant·A
Mark W. Horvath KEY
President, Breast & Skeletal
—
7.8K sh
Own New
-
Other·D
Mark W. Horvath KEY
President, Breast & Skeletal
—
2.8K sh
Own -100%
-
Other·D
Mark W. Horvath KEY
President, Breast & Skeletal
—
3.5K sh
Own -100%
-
Other·D
Mark W. Horvath KEY
President, Breast & Skeletal
—
3.5K sh
Own -100%
-
Other·D
Mark W. Horvath KEY
President, Breast & Skeletal
—
2.9K sh
Own -100%
-
Other·D
Mark W. Horvath KEY
President, Breast & Skeletal
—
5.3K sh
Own -100%
-
Other·D
Mark W. Horvath KEY
President, Breast & Skeletal
—
2.5K sh
Own -100%
-
Other·D
Mark W. Horvath KEY
President, Breast & Skeletal
—
23.0K sh
Own -100%
-
Other·D
Director
—
5.5K sh
Own -100%
-
Other·D
Director
—
4.5K sh
Own -100%
-
Other·D
Director
—
4.2K sh
Own -100%
-
Other·D
Director
—
5.3K sh
Own -100%
-
Other·D
Director
—
5.1K sh
Own -100%
-
Other·D
Director
—
7.3K sh
Own -100%
-
Other·D
Director
—
6.5K sh
Own -100%
-
Other·D
Director
—
7.6K sh
Own -100%
-
Other·D
Director
—
6.8K sh
Own -100%
-
Other·D
Director
—
1.5K sh
Own -100%
-
Other·D
Director
—
25.8K sh
Own -100%
-
Other·D
Director
—
5.5K sh
Own -100%
-
Other·D
Director
—
4.5K sh
Own -100%
-
Other·D
Director
—
4.2K sh
Own -100%
-
Other·D
Director
—
768 sh
Own -100%
-
Other·D
Director
—
8.4K sh
Own -100%
-
Other·D
Director
—
5.5K sh
Own -100%
-
Other·D
Director
—
4.5K sh
Own -100%
-
Other·D
Director
—
4.2K sh
Own -100%
-
Other·D
Director
—
5.3K sh
Own -100%
-
Other·D
Director
—
5.1K sh
Own -100%
-
Other·D
Director
—
7.3K sh
Own -100%
-
Other·D
Director
—
6.5K sh
Own -100%
-
Other·D
Director
—
7.6K sh
Own -100%
-
Other·D
Director
—
6.8K sh
Own -100%
-
Other·D
Director
—
50.5K sh
Own -100%
-
Other·D
Director
—
5.5K sh
Own -100%
-
Other·D
Director
—
4.5K sh
Own -100%
-
Other·D
Director
—
2.1K sh
Own -100%
-
Other·D
Director
—
7.4K sh
Own -100%
-
Other·D
Director
—
5.2K sh
Own -100%
-
Other·D
Director
—
4.9K sh
Own -100%
-
Other·D
Director
—
5.5K sh
Own -100%
-
Other·D
Director
—
1.0K sh
Own -100%
-
Other·D
Director
—
5.4K sh
Own -100%
-
Other·D
Director
—
5.4K sh
Own -100%
-
Other·D
Chairman, President and CEO
—
190.4K sh
Own -100%
-
Grant·A
Chairman, President and CEO
—
190.4K sh
Own New
-
Other·D
Chairman, President and CEO
—
117.8K sh
Own -100%
-
Other·D
Chairman, President and CEO
—
117.8K sh
Own -100%
-
Other·D
Chairman, President and CEO
—
106.3K sh
Own -100%
-
Other·D
Chairman, President and CEO
—
118.9K sh
Own -100%
-
Other·D
Chairman, President and CEO
—
123.8K sh
Own -100%
-
Other·D
Chairman, President and CEO
—
152.5K sh
Own -100%
-
Other·D
Chairman, President and CEO
—
151.1K sh
Own -100%
-
Other·D
Chairman, President and CEO
—
768.6K sh
Own -100%
-
Other·D
Chairman, President and CEO
—
159.3K sh
Own -100%
-
Other·D
Chairman, President and CEO
—
160.6K sh
Own -100%
-
Other·D
Chairman, President and CEO
—
1.1M sh
Own -100%
-
Other·D
Chairman, President and CEO
—
1.4M sh
Own -100%
-
Other·D
Director
—
5.5K sh
Own -100%
-
Other·D
Director
—
4.5K sh
Own -100%
-
Other·D
Director
—
4.2K sh
Own -100%
-
Other·D
Director
—
5.3K sh
Own -100%
-
Other·D
Director
—
5.1K sh
Own -100%
-
Other·D
Director
—
7.3K sh
Own -100%
-
Other·D
Director
—
6.5K sh
Own -100%
-
Other·D
Director
—
5.4K sh
Own -100%
-
Other·D
Director
—
15.4K sh
Own -100%
-
Other·D
Director
—
6.6K sh
Own -100%
-
Other·D
SVP, Human Resources
—
7.6K sh
Own -100%
-
Other·D
Principal Accounting Officer
—
5.7K sh
Own -100%
-
Grant·A
Principal Accounting Officer
—
5.7K sh
Own New
-
Other·D
Principal Accounting Officer
—
3.5K sh
Own -100%
-
Other·D
Principal Accounting Officer
—
3.5K sh
Own -100%
-
Other·D
Principal Accounting Officer
—
3.4K sh
Own -100%
-
Other·D
Principal Accounting Officer
—
7.1K sh
Own -100%
-
Other·D
Principal Accounting Officer
—
7.5K sh
Own -100%
-
Other·D
Principal Accounting Officer
—
10.9K sh
Own -100%
-
Other·D
Principal Accounting Officer
—
18.0K sh
Own -100%
-
Grant·A
Director
$0
870 sh
Own +2%
-
Other·F
General Counsel
$13.9K
185 sh · $75.36
Own -1%
-
Grant·A
Director
—
3.2K sh
Own +14%
-
Grant·A
Director
—
3.2K sh
Own +62%
-
Grant·A
Director
—
3.2K sh
Own +7%
-
Grant·A
Director
—
3.2K sh
Own +76%
-
Grant·A
Director
—
3.2K sh
Own +183%
-
Grant·A
Director
—
3.2K sh
Own +145%
-
Grant·A
Director
—
3.2K sh
Own +93%
-
Other·F
Mark W. Horvath KEY
President, Breast & Skeletal
$8.5K
113 sh · $75.15
Own -0%
-
Other·F
SVP, Human Resources
$330.9K
4.4K sh · $74.93
Own -37%
-
Other·F
SVP, Human Resources
$330.9K
4.4K sh · $74.93
Own -37%
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| Apr 7, 2026 | Jan Verstreken KEY | Other D | 31.4K | — |
| Apr 7, 2026 | Jan Verstreken KEY | Grant A | 31.4K | — |
| Apr 7, 2026 | Jan Verstreken KEY | Other D | 18.7K | — |
| Apr 7, 2026 | Jan Verstreken KEY | Other D | 20.1K | — |
| Apr 7, 2026 | Jan Verstreken KEY | Other D | 19.3K | — |
| Apr 7, 2026 | Jan Verstreken KEY | Other D | 17.8K | — |
| Apr 7, 2026 | Jan Verstreken KEY | Other D | 12.5K | — |
| Apr 7, 2026 | Jan Verstreken KEY | Other D | 29.0K | — |
| Apr 7, 2026 | Jan Verstreken KEY | Other D | 15.4K | — |
| Apr 7, 2026 | Jan Verstreken KEY | Other D | 14.0K | — |
| Apr 7, 2026 | Jan Verstreken KEY | Other D | 12.5K | — |
| Apr 7, 2026 | Jan Verstreken KEY | Other D | 7.6K | — |
| Apr 7, 2026 | Jan Verstreken KEY | Other D | 134.0K | — |
| Apr 7, 2026 | Brandon Schnittker KEY | Other D | 8.4K | — |
| Apr 7, 2026 | Brandon Schnittker KEY | Grant A | 8.4K | — |
| Apr 7, 2026 | Brandon Schnittker KEY | Other D | 8.4K | — |
| Apr 7, 2026 | Brandon Schnittker KEY | Other D | 2.5K | — |
| Apr 7, 2026 | Brandon Schnittker KEY | Other D | 5.0K | — |
| Apr 7, 2026 | Brandon Schnittker KEY | Other D | 3.9K | — |
| Apr 7, 2026 | Brandon Schnittker KEY | Other D | 2.3K | — |
| Apr 7, 2026 | Brandon Schnittker KEY | Other D | 17.6K | — |
| Apr 7, 2026 | Jennifer M Schneiders KEY | Other D | 22.6K | — |
| Apr 7, 2026 | Jennifer M Schneiders KEY | Grant A | 22.6K | — |
| Apr 7, 2026 | Jennifer M Schneiders KEY | Other D | 18.7K | — |
| Apr 7, 2026 | Jennifer M Schneiders KEY | Other D | 10.0K | — |
| Apr 7, 2026 | Jennifer M Schneiders KEY | Other D | 4.1K | — |
| Apr 7, 2026 | Jennifer M Schneiders KEY | Other D | 3.8K | — |
| Apr 7, 2026 | Jennifer M Schneiders KEY | Other D | 41.5K | — |
| Apr 7, 2026 | Karleen Marie Oberton KEY | Other D | 42.7K | — |
| Apr 7, 2026 | Karleen Marie Oberton KEY | Grant A | 42.7K | — |
| Apr 7, 2026 | Karleen Marie Oberton KEY | Other D | 28.0K | — |
| Apr 7, 2026 | Karleen Marie Oberton KEY | Other D | 25.1K | — |
| Apr 7, 2026 | Karleen Marie Oberton KEY | Other D | 21.7K | — |
| Apr 7, 2026 | Karleen Marie Oberton KEY | Other D | 23.8K | — |
| Apr 7, 2026 | Karleen Marie Oberton KEY | Other D | 23.8K | — |
| Apr 7, 2026 | Karleen Marie Oberton KEY | Other D | 30.8K | — |
| Apr 7, 2026 | Karleen Marie Oberton KEY | Other D | 150.7K | — |
| Apr 7, 2026 | Essex D Mitchell | Other D | 46.2K | — |
| Apr 7, 2026 | Essex D Mitchell | Grant A | 46.2K | — |
| Apr 7, 2026 | Essex D Mitchell | Other D | 32.7K | — |
| Apr 7, 2026 | Essex D Mitchell | Other D | 25.1K | — |
| Apr 7, 2026 | Essex D Mitchell | Other D | 11.6K | — |
| Apr 7, 2026 | Essex D Mitchell | Other D | 3.0K | — |
| Apr 7, 2026 | Essex D Mitchell | Other D | 77.7K | — |
| Apr 7, 2026 | Anne M. Liddy | Other D | 3.5K | — |
| Apr 7, 2026 | Anne M. Liddy | Grant A | 3.5K | — |
| Apr 7, 2026 | Anne M. Liddy | Other D | 4.7K | — |
| Apr 7, 2026 | Anne M. Liddy | Other D | 7.5K | — |
| Apr 7, 2026 | Anne M. Liddy | Other D | 6.0K | — |
| Apr 7, 2026 | Anne M. Liddy | Other D | 5.1K | — |
| Apr 7, 2026 | Anne M. Liddy | Other D | 5.9K | — |
| Apr 7, 2026 | Anne M. Liddy | Other D | 6.1K | — |
| Apr 7, 2026 | Anne M. Liddy | Other D | 2.2K | — |
| Apr 7, 2026 | Anne M. Liddy | Other D | 28.1K | — |
| Apr 7, 2026 | Mark W. Horvath KEY | Other D | 7.8K | — |
| Apr 7, 2026 | Mark W. Horvath KEY | Grant A | 7.8K | — |
| Apr 7, 2026 | Mark W. Horvath KEY | Other D | 2.8K | — |
| Apr 7, 2026 | Mark W. Horvath KEY | Other D | 3.5K | — |
| Apr 7, 2026 | Mark W. Horvath KEY | Other D | 3.5K | — |
| Apr 7, 2026 | Mark W. Horvath KEY | Other D | 2.9K | — |
| Apr 7, 2026 | Mark W. Horvath KEY | Other D | 5.3K | — |
| Apr 7, 2026 | Mark W. Horvath KEY | Other D | 2.5K | — |
| Apr 7, 2026 | Mark W. Horvath KEY | Other D | 23.0K | — |
| Apr 7, 2026 | Amy Mcbride Wendell | Other D | 5.5K | — |
| Apr 7, 2026 | Amy Mcbride Wendell | Other D | 4.5K | — |
| Apr 7, 2026 | Amy Mcbride Wendell | Other D | 4.2K | — |
| Apr 7, 2026 | Amy Mcbride Wendell | Other D | 5.3K | — |
| Apr 7, 2026 | Amy Mcbride Wendell | Other D | 5.1K | — |
| Apr 7, 2026 | Amy Mcbride Wendell | Other D | 7.3K | — |
| Apr 7, 2026 | Amy Mcbride Wendell | Other D | 6.5K | — |
| Apr 7, 2026 | Amy Mcbride Wendell | Other D | 7.6K | — |
| Apr 7, 2026 | Amy Mcbride Wendell | Other D | 6.8K | — |
| Apr 7, 2026 | Amy Mcbride Wendell | Other D | 1.5K | — |
| Apr 7, 2026 | Amy Mcbride Wendell | Other D | 25.8K | — |
| Apr 7, 2026 | Stacey D. Stewart | Other D | 5.5K | — |
| Apr 7, 2026 | Stacey D. Stewart | Other D | 4.5K | — |
| Apr 7, 2026 | Stacey D. Stewart | Other D | 4.2K | — |
| Apr 7, 2026 | Stacey D. Stewart | Other D | 768 | — |
| Apr 7, 2026 | Stacey D. Stewart | Other D | 8.4K | — |
| Apr 7, 2026 | Christiana Stamoulis | Other D | 5.5K | — |
| Apr 7, 2026 | Christiana Stamoulis | Other D | 4.5K | — |
| Apr 7, 2026 | Christiana Stamoulis | Other D | 4.2K | — |
| Apr 7, 2026 | Christiana Stamoulis | Other D | 5.3K | — |
| Apr 7, 2026 | Christiana Stamoulis | Other D | 5.1K | — |
| Apr 7, 2026 | Christiana Stamoulis | Other D | 7.3K | — |
| Apr 7, 2026 | Christiana Stamoulis | Other D | 6.5K | — |
| Apr 7, 2026 | Christiana Stamoulis | Other D | 7.6K | — |
| Apr 7, 2026 | Christiana Stamoulis | Other D | 6.8K | — |
| Apr 7, 2026 | Christiana Stamoulis | Other D | 50.5K | — |
| Apr 7, 2026 | Nanaz Mohtashami | Other D | 5.5K | — |
| Apr 7, 2026 | Nanaz Mohtashami | Other D | 4.5K | — |
| Apr 7, 2026 | Nanaz Mohtashami | Other D | 2.1K | — |
| Apr 7, 2026 | Nanaz Mohtashami | Other D | 7.4K | — |
| Apr 7, 2026 | Wayde D. Mcmillan | Other D | 5.2K | — |
| Apr 7, 2026 | Wayde D. Mcmillan | Other D | 4.9K | — |
| Apr 7, 2026 | Martin D Madaus | Other D | 5.5K | — |
| Apr 7, 2026 | Martin D Madaus | Other D | 1.0K | — |
| Apr 7, 2026 | Martin D Madaus | Other D | 5.4K | — |
| Apr 7, 2026 | Martin D Madaus | Other D | 5.4K | — |
| Apr 7, 2026 | Stephen P Macmillan KEY | Other D | 190.4K | — |
| Apr 7, 2026 | Stephen P Macmillan KEY | Grant A | 190.4K | — |
| Apr 7, 2026 | Stephen P Macmillan KEY | Other D | 117.8K | — |
| Apr 7, 2026 | Stephen P Macmillan KEY | Other D | 117.8K | — |
| Apr 7, 2026 | Stephen P Macmillan KEY | Other D | 106.3K | — |
| Apr 7, 2026 | Stephen P Macmillan KEY | Other D | 118.9K | — |
| Apr 7, 2026 | Stephen P Macmillan KEY | Other D | 123.8K | — |
| Apr 7, 2026 | Stephen P Macmillan KEY | Other D | 152.5K | — |
| Apr 7, 2026 | Stephen P Macmillan KEY | Other D | 151.1K | — |
| Apr 7, 2026 | Stephen P Macmillan KEY | Other D | 768.6K | — |
| Apr 7, 2026 | Stephen P Macmillan KEY | Other D | 159.3K | — |
| Apr 7, 2026 | Stephen P Macmillan KEY | Other D | 160.6K | — |
| Apr 7, 2026 | Stephen P Macmillan KEY | Other D | 1.1M | — |
| Apr 7, 2026 | Stephen P Macmillan KEY | Other D | 1.4M | — |
| Apr 7, 2026 | Charles J Dockendorff | Other D | 5.5K | — |
| Apr 7, 2026 | Charles J Dockendorff | Other D | 4.5K | — |
| Apr 7, 2026 | Charles J Dockendorff | Other D | 4.2K | — |
| Apr 7, 2026 | Charles J Dockendorff | Other D | 5.3K | — |
| Apr 7, 2026 | Charles J Dockendorff | Other D | 5.1K | — |
| Apr 7, 2026 | Charles J Dockendorff | Other D | 7.3K | — |
| Apr 7, 2026 | Charles J Dockendorff | Other D | 6.5K | — |
| Apr 7, 2026 | Charles J Dockendorff | Other D | 5.4K | — |
| Apr 7, 2026 | Charles J Dockendorff | Other D | 15.4K | — |
| Apr 7, 2026 | Charles J Dockendorff | Other D | 6.6K | — |
| Apr 7, 2026 | Diana De Walt | Other D | 7.6K | — |
| Apr 7, 2026 | Benjamin Jordan Cohn | Other D | 5.7K | — |
| Apr 7, 2026 | Benjamin Jordan Cohn | Grant A | 5.7K | — |
| Apr 7, 2026 | Benjamin Jordan Cohn | Other D | 3.5K | — |
| Apr 7, 2026 | Benjamin Jordan Cohn | Other D | 3.5K | — |
| Apr 7, 2026 | Benjamin Jordan Cohn | Other D | 3.4K | — |
| Apr 7, 2026 | Benjamin Jordan Cohn | Other D | 7.1K | — |
| Apr 7, 2026 | Benjamin Jordan Cohn | Other D | 7.5K | — |
| Apr 7, 2026 | Benjamin Jordan Cohn | Other D | 10.9K | — |
| Apr 7, 2026 | Benjamin Jordan Cohn | Other D | 18.0K | — |
| Mar 20, 2026 | Charles J Dockendorff | Grant A | 870 | $0 |
| Feb 27, 2026 | Anne M. Liddy | Other F | 185 | $13.9K |
| Feb 26, 2026 | Amy Mcbride Wendell | Grant A | 3.2K | — |
| Feb 26, 2026 | Stacey D. Stewart | Grant A | 3.2K | — |
| Feb 26, 2026 | Christiana Stamoulis | Grant A | 3.2K | — |
| Feb 26, 2026 | Nanaz Mohtashami | Grant A | 3.2K | — |
| Feb 26, 2026 | Wayde D. Mcmillan | Grant A | 3.2K | — |
| Feb 26, 2026 | Martin D Madaus | Grant A | 3.2K | — |
| Feb 26, 2026 | Charles J Dockendorff | Grant A | 3.2K | — |
| Feb 10, 2026 | Mark W. Horvath KEY | Other F | 113 | $8.5K |
| Jan 30, 2026 | Diana De Walt | Other F | 4.4K | $330.9K |
| Jan 30, 2026 | Diana De Walt | Other F | 4.4K | $330.9K |
About HOLX insider trading
This page tracks insider transactions for HOLOGIC INC (HOLX) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.