FORM
insider transactionsFORMFACTOR 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).
Net shares · 90d
-59.2K
0 buy · 59.2K sell
Net value · 90d
-$7.5M
$0 in · $7.5M out
Sentiment · 90d
Net selling
0% buying · 100% selling
Open-market trades · 90d
31
0 buy · 59.2K sell
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·G
Director
$0
740 sh
Own -3%
-
Sell·S
Director
$424.2K
2.8K sh · $151.49
Own -9%
-
Sell·S
Mike Slessor KEY
CEO · 10b5-1
$201.0K
1.6K sh · $123.37
Own -0%
-
Sell·S
Mike Slessor KEY
CEO · 10b5-1
$306.6K
2.5K sh · $122.63
Own -1%
-
Sell·S
Mike Slessor KEY
CEO · 10b5-1
$513.7K
4.2K sh · $121.72
Own -1%
-
Sell·S
Mike Slessor KEY
CEO · 10b5-1
$118.0K
975 sh · $121.00
Own -0%
-
Sell·S
Mike Slessor KEY
CEO · 10b5-1
$47.8K
400 sh · $119.46
Own -0%
-
Sell·S
Mike Slessor KEY
CEO · 10b5-1
$91.3K
767 sh · $119.00
Own -0%
-
Sell·S
Mike Slessor KEY
CEO · 10b5-1
$164.7K
1.4K sh · $117.70
Own -0%
-
Exercise·M
CFO, SVP Global Finance
$0
773 sh
Own New
-
Other·F
CFO, SVP Global Finance
$24.1K
193 sh · $125.11
Own -1%
-
Exercise·M
CFO, SVP Global Finance
$0
773 sh
Own +6%
-
Sell·S
Director
$793.5K
6.3K sh · $125.40
Own -54%
-
Sell·S
Director
$484.1K
3.8K sh · $126.48
Own -33%
-
Sell·S
Director
$409.5K
3.2K sh · $126.00
Own -27%
-
Sell·S
Director
$115.8K
1.0K sh · $115.84
Own -3%
-
Sell·S
Director
$678.2K
5.4K sh · $125.60
Own -18%
-
Grant·A
Director
$0
1.3K sh
Own +4%
-
Grant·A
Director
$0
1.3K sh
Own +13%
-
Grant·A
Director
$0
1.3K sh
Own +13%
-
Grant·A
Director
$0
1.3K sh
Own +5%
-
Grant·A
Director
$0
1.3K sh
Own +10%
-
Grant·A
Director
$0
1.3K sh
Own +13%
-
Sell·S
Mike Slessor KEY
CEO · 10b5-1
$95.6K
702 sh · $136.15
Own -0%
-
Sell·S
Mike Slessor KEY
CEO · 10b5-1
$9.0K
66 sh · $135.73
Own -0%
-
Sell·S
Mike Slessor KEY
CEO · 10b5-1
$26.5K
200 sh · $132.63
Own -0%
-
Sell·S
Mike Slessor KEY
CEO · 10b5-1
$26.1K
200 sh · $130.57
Own -0%
-
Sell·S
Mike Slessor KEY
CEO · 10b5-1
$90.5K
700 sh · $129.33
Own -0%
-
Sell·S
Mike Slessor KEY
CEO · 10b5-1
$90.0K
700 sh · $128.52
Own -0%
-
Sell·S
Mike Slessor KEY
CEO · 10b5-1
$12.7K
100 sh · $127.47
Own -0%
-
Sell·S
Mike Slessor KEY
CEO · 10b5-1
$50.4K
398 sh · $126.59
Own -0%
-
Sell·S
Mike Slessor KEY
CEO · 10b5-1
$174.3K
1.4K sh · $125.58
Own -0%
-
Sell·S
Mike Slessor KEY
CEO · 10b5-1
$372.1K
3.0K sh · $124.71
Own -1%
-
Sell·S
Mike Slessor KEY
CEO · 10b5-1
$160.8K
1.3K sh · $123.72
Own -0%
-
Sell·S
Mike Slessor KEY
CEO · 10b5-1
$86.0K
700 sh · $122.84
Own -0%
-
Sell·S
Director
$516.3K
4.0K sh · $128.79
Own -23%
-
Exercise·M
Mike Slessor KEY
CEO
$0
5.9K sh
Own New
-
Other·F
Mike Slessor KEY
CEO
$475.7K
3.3K sh · $144.68
Own -1%
-
Exercise·M
Mike Slessor KEY
CEO
$0
5.9K sh
Own +1%
-
Exercise·M
Mike Slessor KEY
CEO
$0
6.0K sh
Own +12%
-
Other·F
Mike Slessor KEY
CEO
$500.6K
3.4K sh · $149.12
Own -1%
-
Exercise·M
Mike Slessor KEY
CEO
$0
6.0K sh
Own +1%
-
Exercise·M
CFO, SVP Global Finance
$0
1.1K sh
Own +11%
-
Other·F
CFO, SVP Global Finance
$40.9K
274 sh · $149.12
Own -2%
-
Exercise·M
CFO, SVP Global Finance
$0
1.1K sh
Own +10%
-
Exercise·M
Mike Slessor KEY
CEO
$0
3.6K sh
Own +25%
-
Other·F
Mike Slessor KEY
CEO
$294.1K
2.0K sh · $145.00
Own -0%
-
Exercise·M
Mike Slessor KEY
CEO
$0
3.6K sh
Own +1%
-
Exercise·M
CFO, SVP Global Finance
$0
521 sh
Own +25%
-
Other·F
CFO, SVP Global Finance
$18.9K
130 sh · $145.00
Own -1%
-
Exercise·M
CFO, SVP Global Finance
$0
521 sh
Own +5%
-
Sell·S
Mike Slessor KEY
CEO · 10b5-1
$99.1K
767 sh · $129.22
Own -0%
-
Sell·S
Mike Slessor KEY
CEO · 10b5-1
$698.3K
5.4K sh · $128.56
Own -1%
-
Sell·S
Mike Slessor KEY
CEO · 10b5-1
$302.4K
2.4K sh · $127.65
Own -1%
-
Sell·S
Mike Slessor KEY
CEO · 10b5-1
$113.9K
900 sh · $126.58
Own -0%
-
Sell·S
Mike Slessor KEY
CEO · 10b5-1
$228.7K
1.8K sh · $125.24
Own -0%
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| Jun 16, 2026 | Thomas St Dennis | Other G | 740 | $0 |
| Jun 15, 2026 | Thomas St Dennis | Sell S | 2.8K | $424.2K |
| Jun 10, 2026 | Mike Slessor KEY 10b5-1 | Sell S | 1.6K | $201.0K |
| Jun 10, 2026 | Mike Slessor KEY 10b5-1 | Sell S | 2.5K | $306.6K |
| Jun 10, 2026 | Mike Slessor KEY 10b5-1 | Sell S | 4.2K | $513.7K |
| Jun 10, 2026 | Mike Slessor KEY 10b5-1 | Sell S | 975 | $118.0K |
| Jun 10, 2026 | Mike Slessor KEY 10b5-1 | Sell S | 400 | $47.8K |
| Jun 10, 2026 | Mike Slessor KEY 10b5-1 | Sell S | 767 | $91.3K |
| Jun 10, 2026 | Mike Slessor KEY 10b5-1 | Sell S | 1.4K | $164.7K |
| Jun 2, 2026 | Aric Brendan Mckinnis KEY | Exercise M | 773 | $0 |
| Jun 2, 2026 | Aric Brendan Mckinnis KEY | Other F | 193 | $24.1K |
| Jun 2, 2026 | Aric Brendan Mckinnis KEY | Exercise M | 773 | $0 |
| Jun 2, 2026 | Sheri Rhodes | Sell S | 6.3K | $793.5K |
| May 21, 2026 | Rebeca Obregon-Jimenez | Sell S | 3.8K | $484.1K |
| May 20, 2026 | Brian C White | Sell S | 3.2K | $409.5K |
| May 19, 2026 | Thomas St Dennis | Sell S | 1.0K | $115.8K |
| May 15, 2026 | Kelley Steven-Waiss | Sell S | 5.4K | $678.2K |
| May 15, 2026 | Thomas St Dennis | Grant A | 1.3K | $0 |
| May 15, 2026 | Rebeca Obregon-Jimenez | Grant A | 1.3K | $0 |
| May 15, 2026 | Sheri Rhodes | Grant A | 1.3K | $0 |
| May 15, 2026 | Kelley Steven-Waiss | Grant A | 1.3K | $0 |
| May 15, 2026 | Jorge Titinger | Grant A | 1.3K | $0 |
| May 15, 2026 | Brian C White | Grant A | 1.3K | $0 |
| May 13, 2026 | Mike Slessor KEY 10b5-1 | Sell S | 702 | $95.6K |
| May 13, 2026 | Mike Slessor KEY 10b5-1 | Sell S | 66 | $9.0K |
| May 13, 2026 | Mike Slessor KEY 10b5-1 | Sell S | 200 | $26.5K |
| May 13, 2026 | Mike Slessor KEY 10b5-1 | Sell S | 200 | $26.1K |
| May 13, 2026 | Mike Slessor KEY 10b5-1 | Sell S | 700 | $90.5K |
| May 13, 2026 | Mike Slessor KEY 10b5-1 | Sell S | 700 | $90.0K |
| May 13, 2026 | Mike Slessor KEY 10b5-1 | Sell S | 100 | $12.7K |
| May 13, 2026 | Mike Slessor KEY 10b5-1 | Sell S | 398 | $50.4K |
| May 13, 2026 | Mike Slessor KEY 10b5-1 | Sell S | 1.4K | $174.3K |
| May 13, 2026 | Mike Slessor KEY 10b5-1 | Sell S | 3.0K | $372.1K |
| May 13, 2026 | Mike Slessor KEY 10b5-1 | Sell S | 1.3K | $160.8K |
| May 13, 2026 | Mike Slessor KEY 10b5-1 | Sell S | 700 | $86.0K |
| May 13, 2026 | Jorge Titinger | Sell S | 4.0K | $516.3K |
| May 7, 2026 | Mike Slessor KEY | Exercise M | 5.9K | $0 |
| May 7, 2026 | Mike Slessor KEY | Other F | 3.3K | $475.7K |
| May 7, 2026 | Mike Slessor KEY | Exercise M | 5.9K | $0 |
| May 6, 2026 | Mike Slessor KEY | Exercise M | 6.0K | $0 |
| May 6, 2026 | Mike Slessor KEY | Other F | 3.4K | $500.6K |
| May 6, 2026 | Mike Slessor KEY | Exercise M | 6.0K | $0 |
| May 6, 2026 | Aric Brendan Mckinnis KEY | Exercise M | 1.1K | $0 |
| May 6, 2026 | Aric Brendan Mckinnis KEY | Other F | 274 | $40.9K |
| May 6, 2026 | Aric Brendan Mckinnis KEY | Exercise M | 1.1K | $0 |
| May 5, 2026 | Mike Slessor KEY | Exercise M | 3.6K | $0 |
| May 5, 2026 | Mike Slessor KEY | Other F | 2.0K | $294.1K |
| May 5, 2026 | Mike Slessor KEY | Exercise M | 3.6K | $0 |
| May 5, 2026 | Aric Brendan Mckinnis KEY | Exercise M | 521 | $0 |
| May 5, 2026 | Aric Brendan Mckinnis KEY | Other F | 130 | $18.9K |
| May 5, 2026 | Aric Brendan Mckinnis KEY | Exercise M | 521 | $0 |
| Apr 15, 2026 | Mike Slessor KEY 10b5-1 | Sell S | 767 | $99.1K |
| Apr 15, 2026 | Mike Slessor KEY 10b5-1 | Sell S | 5.4K | $698.3K |
| Apr 15, 2026 | Mike Slessor KEY 10b5-1 | Sell S | 2.4K | $302.4K |
| Apr 15, 2026 | Mike Slessor KEY 10b5-1 | Sell S | 900 | $113.9K |
| Apr 15, 2026 | Mike Slessor KEY 10b5-1 | Sell S | 1.8K | $228.7K |
About FORM insider trading
This page tracks insider transactions for FORMFACTOR INC (FORM) 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.