FORM · Insider Trading

FormFactor Inc.

Full FORM quote
Iron condor setupsExpected moveIV rank historyFibonacci levelsInsider trading

Every open-market purchase and sale reported by FORM officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.

Form 4 Filings
50
most recent
Open-Market Buys
0
code P
Sales
28
code S
Reporting Insiders
10
current holders
FORM — Recent Form 4 Transactions (latest 2026-10-14)
FiledInsiderRole TypeSharesValue
2026-10-14 Mike Slessor CEO Sell −11,098 −$1.39M
2026-09-17 Mike Slessor CEO Sell −17,510 −$1.83M
2026-09-04 Kelley Steven-Waiss Director Sell −2,100 −$201.81K
2026-08-17 Mike Slessor CEO Sell −16,002 −$2.10M
2026-08-10 Aric Brendan McKinnis CFO, SVP Global Finance A +6,924 deriv. —
2026-08-10 Mike Slessor CEO MIXED +65,504 −$9.65M
2026-08-07 Aric Brendan McKinnis CFO, SVP Global Finance MIXED +1,216 −$46.44K
2026-08-07 Mike Slessor CEO MIXED +4,290 −$618.84K
2026-08-07 Aric Brendan McKinnis CFO, SVP Global Finance MIXED +1,216 −$46.44K
2026-08-07 Mike Slessor CEO MIXED +4,290 −$618.84K
2026-07-16 Mike Slessor CEO Sell −4,735 −$560.19K
2026-06-16 Thomas St Dennis Director MIXED −3,540 −$424.17K
2026-06-11 Mike Slessor CEO Sell −11,890 −$1.44M
2026-06-04 Sheri Rhodes Director Sell −6,328 −$793.53K
2026-06-04 Aric Brendan McKinnis CFO, SVP Global Finance MIXED +580 −$24.15K
2026-05-22 Rebeca Obregon-Jimenez Director Sell −3,828 −$484.15K
2026-05-21 Brian C White Director Sell −3,250 −$409.50K
2026-05-21 Thomas St Dennis Director Sell −1,000 −$115.84K
2026-05-19 Kelley Steven-Waiss Director A +1,347 —
2026-05-19 Thomas St Dennis Director A +1,347 —
2026-05-19 Sheri Rhodes Director A +1,347 —
2026-05-19 Rebeca Obregon-Jimenez Director A +1,347 —
2026-05-19 Brian C White Director A +1,347 —
2026-05-19 Jorge Titinger Director A +1,347 —
2026-05-15 Jorge Titinger Director Sell −4,009 −$516.30K
2026-05-15 Kelley Steven-Waiss Director Sell −5,400 −$678.24K
2026-05-14 Mike Slessor CEO Sell −9,438 −$1.19M
2026-05-08 Mike Slessor CEO MIXED +2,620 −$475.71K
2026-05-07 Mike Slessor CEO MIXED +4,290 −$794.66K
2026-05-07 Aric Brendan McKinnis CFO, SVP Global Finance MIXED +1,216 −$59.71K
2026-04-15 Mike Slessor CEO Sell −11,294 −$1.44M
2026-03-18 Mike Slessor CEO Sell −10,227 −$973.08K
2026-03-06 Aric Brendan McKinnis CFO, SVP Global Finance Sell −3,462 −$313.03K
2026-03-03 Aric Brendan McKinnis CFO, SVP Global Finance MIXED +580 −$19.24K
2026-02-25 Brian C White Director Sell −2,300 −$230.02K
2026-02-18 Mike Slessor CEO Sell −8,664 −$815.60K
2026-02-12 Kevin J Brewer Director Sell −3,000 −$288.60K
2026-02-11 Kelley Steven-Waiss Director Sell −2,200 −$206.14K
2026-02-11 Thomas St Dennis Director Sell −7,431 −$697.35K
2026-02-11 Sheri Rhodes Director Sell −7,634 −$706.97K
2026-02-11 Mike Slessor CEO MIXED +2,620 −$311.97K
2026-02-10 Jorge Titinger Director Sell −2,000 −$177.68K
2026-02-10 Rebeca Obregon-Jimenez Director Sell −2,770 −$265.42K
2026-02-10 Brian C White Director Sell −5,500 −$500.23K
2026-02-09 Aric Brendan McKinnis CFO, SVP Global Finance MIXED +1,122 −$43.92K
2026-02-09 Mike Slessor CEO MIXED +4,223 −$478.81K
2026-01-15 Mike Slessor CEO Sell −13,088 −$1.01M
2026-01-06 Mike Slessor CEO Sell −39,606 −$2.57M
2025-12-17 Mike Slessor CEO Sell −7,669 −$432.22K
2025-12-03 Aric Brendan McKinnis CFO, SVP Global Finance MIXED +580 −$10.82K
FORM — Current Insider Holders
InsiderRole Shares HeldValue
Mike Slessor CEO 455,596 $47.84M
Thomas St Dennis Director 74,333 $7.81M
Shai Shahar CFO, SVP Global Finance 55,968 $5.88M
Kelley Steven-Waiss Director 24,426 $2.56M
Jorge Titinger Director 14,836 $1.56M
Aric Brendan McKinnis CFO, SVP Global Finance 14,426 $1.51M
Brian C White Director 8,653 $908.65K
Kevin J Brewer Director 8,105 $851.11K
Rebeca Obregon-Jimenez Director 7,875 $826.95K
Sheri Rhodes Director 5,375 $564.43K
FORM Insider Trading FAQ
Who are the insiders at FORM?
10 officers, directors and 10%+ beneficial owners currently report holdings in FORM via SEC Form 4.
Are FORM insiders buying or selling?
Across the 50 most recent Form 4 filings for FORM, 0 were open-market purchases (code P) and 28 were sales (code S). Sales frequently reflect scheduled 10b5-1 plans or tax withholding rather than a view on the stock.
How current is FORM insider data?
Form 4 must be filed within two business days of the transaction, so this is close to real time. The most recent FORM filing is dated 2026-10-14.
How to read Form 4 activity

Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.

Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.

Full filing history and per-insider positions are on the FORM quote page; the site-wide leaderboard is on the insider transactions hub.

More on FORM
FORM full quote Insider Transactions Hub (all symbols) FORM iron condor setups FORM expected move FORM IV rank history FORM Fibonacci levels

Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.