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FORM Insider Trading

Insider Ownership Percentage: 0.90%
Insider Buying (Last 12 Months): $0.00
Insider Selling (Last 12 Months): $1,566,461.18

FormFactor Insider Trading History Chart

This chart shows the insider buying and selling history at FormFactor by year and by quarter.

Skip ChartChart Data in Insider Trading History Table

FormFactor Share Price & Price History

Current Price: $57.35
Price Change: ▲ Price Increase of +0.09 (0.16%)
As of 12/4/2025 05:00 PM ET

This chart shows the closing price history over time for FORM up to the past year.

Skip Chart and Table DataPrice Data in Insider Trading History Table
Days: 30 | 90 | 365

FormFactor Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
12/2/2025Kelley Steven-WaissDirectorSell2,700$55.97$151,119.0032,779View SEC Filing Icon  
11/19/2025Mike SlessorCEOSell8,403$50.06$420,654.18533,270View SEC Filing Icon  
11/17/2025Thomas St. DennisDirectorSell2,000$49.85$99,700.0038,957View SEC Filing Icon  
9/12/2025Kelley Steven-WaissDirectorSell3,600$30.43$109,548.0035,479View SEC Filing Icon  
8/13/2025Rebeca Obregon-JimenezDirectorSell4,000$29.55$118,200.0013,126View SEC Filing Icon  
5/29/2025Thomas St. DennisDirectorSell3,000$31.24$93,720.0040,957View SEC Filing Icon  
5/1/2025Mike SlessorCEOSell4,000$31.72$126,880.00510,650View SEC Filing Icon  
4/1/2025Mike SlessorCEOSell4,000$28.24$112,960.00514,650View SEC Filing Icon  
2/3/2025Mike SlessorCEOSell4,000$38.98$155,920.00518,531View SEC Filing Icon  
1/2/2025Mike SlessorCEOSell4,000$44.44$177,760.00522,531View SEC Filing Icon  
12/2/2024Mike SlessorCEOSell4,000$40.59$162,360.00526,531View SEC Filing Icon  
10/1/2024Mike SlessorCEOSell4,000$45.28$181,120.00530,276View SEC Filing Icon  
9/3/2024Mike SlessorCEOSell4,000$46.31$185,240.00534,276View SEC Filing Icon  
8/6/2024Jorge TitingerDirectorSell6,770$41.94$283,933.8012,970View SEC Filing Icon  
8/1/2024Mike SlessorCEOSell4,000$50.93$203,720.00523,187View SEC Filing Icon  
7/1/2024Mike SlessorCEOSell4,000$59.00$236,000.00487,581View SEC Filing Icon  
5/28/2024Rebeca Obregon-JimenezDirectorSell4,833$57.59$278,332.4710,598View SEC Filing Icon  
5/20/2024Brian C. WhiteDirectorSell3,290$57.00$187,530.0011,828View SEC Filing Icon  
5/10/2024Thomas St. DennisDirectorSell2,000$56.30$112,600.0036,701View SEC Filing Icon  
5/7/2024Shai ShaharCFOSell6,094$55.76$339,801.4415,669View SEC Filing Icon  
5/7/2024Sheri RhodesDirectorSell13,319$56.02$746,130.387,634View SEC Filing Icon  
5/1/2024Mike SlessorCEOSell4,000$43.75$175,000.00491,781View SEC Filing Icon  
4/1/2024Mike SlessorCEOSell4,000$45.94$183,760.00495,781View SEC Filing Icon  
3/4/2024Shai ShaharCFOSell10,000$44.51$445,100.0027,591View SEC Filing Icon  
3/1/2024Mike SlessorCEOSell4,000$43.38$173,520.00499,781View SEC Filing Icon  
2/12/2024Shai ShaharCFOSell10,000$42.12$421,200.0067,141View SEC Filing Icon  
12/1/2023Rebeca Obregon-JimenezDirectorSell8,490$37.51$318,459.9011,603View SEC Filing Icon  
11/20/2023Shai ShaharCFOSell16,618$39.49$656,244.8277,941View SEC Filing Icon  
11/14/2023Thomas St. DennisDirectorSell3,792$38.24$145,006.0838,701View SEC Filing Icon  
11/9/2023Shai ShaharCFOSell10,986$35.02$384,729.72107,933View SEC Filing Icon  
3/6/2023Shai ShaharCFOSell4,759$29.68$141,247.1272,900View SEC Filing Icon  
2/13/2023Mike SlessorCEOSell10,000$31.97$319,700.00477,438View SEC Filing Icon  
See Full Table

SEC Filings (Institutional Ownership Changes) for FormFactor (NASDAQ:FORM)

98.76% of FormFactor stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

This chart shows the instiutional buying and selling at FORM by year and by quarter.

Skip Institutional Buying and Selling Chart and Table DataRead Chart Data in Institutional Trading History Table

FormFactor Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
11/21/2025CIBC Bancorp USA Inc.8,308$0.30M0.0%N/A0.011%Search for SEC Filing on Google Icon
11/17/2025CANADA LIFE ASSURANCE Co94,535$3.42M0.0%+8.8%0.122%Search for SEC Filing on Google Icon
11/17/2025Voleon Capital Management LP25,682$0.94M0.0%N/A0.033%Search for SEC Filing on Google Icon
11/17/2025Voloridge Investment Management LLC388,449$14.15M0.0%+13.7%0.501%Search for SEC Filing on Google Icon
11/17/2025Wexford Capital LP2,755$100K0.0%N/A0.004%Search for SEC Filing on Google Icon
11/17/2025Verition Fund Management LLC42,072$1.53M0.0%-43.4%0.054%Search for SEC Filing on Google Icon
11/17/2025Susquehanna Fundamental Investments LLC74,495$2.71M0.1%-9.1%0.096%Search for SEC Filing on Google Icon
11/17/2025Sora Investors LLC113,538$4.14M0.4%+1.2%0.146%Search for SEC Filing on Google Icon
11/17/2025Polymer Capital Management US LLC122,000$4.44M0.5%N/A0.157%Search for SEC Filing on Google Icon
11/17/2025Numerai GP LLC6,559$0.24M0.0%N/A0.008%Search for SEC Filing on Google Icon
11/17/2025Mariner LLC25,678$0.94M0.0%-22.5%0.033%Search for SEC Filing on Google Icon
11/17/2025Mercer Global Advisors Inc. ADV7,352$0.27M0.0%N/A0.009%Search for SEC Filing on Google Icon
11/17/2025Millennium Management LLC113,178$4.12M0.0%+357.3%0.146%Search for SEC Filing on Google Icon
11/17/2025MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.36,210$1.32M0.0%-15.2%0.047%Search for SEC Filing on Google Icon
11/17/2025Holocene Advisors LP22,255$0.81M0.0%+193.4%0.029%Search for SEC Filing on Google Icon
11/17/2025Earnest Partners LLC5,947,088$216.59M0.9%-2.3%7.672%Search for SEC Filing on Google Icon
11/17/2025Cinctive Capital Management LP52,830$1.92M0.1%N/A0.068%Search for SEC Filing on Google Icon
11/17/2025Bank of America Corp DE2,533,340$92.26M0.0%-9.7%3.268%Search for SEC Filing on Google Icon
11/17/2025Algert Global LLC182,371$6.64M0.1%+1,755.2%0.235%Search for SEC Filing on Google Icon
11/17/2025Alliancebernstein L.P.2,397,161$87.31M0.0%+3.2%3.092%Search for SEC Filing on Google Icon
11/17/2025Ameriprise Financial Inc.1,121,225$40.84M0.0%-0.6%1.446%Search for SEC Filing on Google Icon
11/14/2025Schonfeld Strategic Advisors LLC16,289$0.59M0.0%N/A0.021%Search for SEC Filing on Google Icon
11/14/2025Creative Planning29,970$1.09M0.0%-6.2%0.039%Search for SEC Filing on Google Icon
11/14/2025SummitTX Capital L.P.104,959$3.82M0.2%N/A0.135%Search for SEC Filing on Google Icon
11/14/2025Raymond James Financial Inc.223,130$8.13M0.0%-18.4%0.288%Search for SEC Filing on Google Icon
11/14/2025UBS AM A Distinct Business Unit of UBS Asset Management Americas LLC147,751$5.38M0.0%-47.7%0.191%Search for SEC Filing on Google Icon
11/14/2025Two Sigma Investments LP358,137$13.04M0.0%+542.7%0.462%Search for SEC Filing on Google Icon
11/14/2025Squarepoint Ops LLC299,859$10.92M0.0%+324.1%0.387%Search for SEC Filing on Google Icon
11/14/2025Comerica Bank82,929$3.02M0.0%+184.1%0.107%Search for SEC Filing on Google Icon
11/14/2025EHP Funds Inc.5,576$0.20M0.2%N/A0.007%Search for SEC Filing on Google Icon
11/13/2025Pathstone Holdings LLC52,687$1.92M0.0%-5.8%0.068%Search for SEC Filing on Google Icon
11/13/2025Entropy Technologies LP19,149$0.70M0.1%N/A0.025%Search for SEC Filing on Google Icon
11/13/2025Invesco Ltd.312,875$11.40M0.0%+4.7%0.404%Search for SEC Filing on Google Icon
11/13/2025Sei Investments Co.1,640,144$59.73M0.1%+3.5%2.116%Search for SEC Filing on Google Icon
11/13/2025UBS Group AG204,153$7.44M0.0%+2.3%0.263%Search for SEC Filing on Google Icon
11/13/2025Shannon River Fund Management LLC968,161$35.26M5.7%N/A1.249%Search for SEC Filing on Google Icon
11/13/2025Capital Fund Management S.A.16,553$0.60M0.0%-69.6%0.021%Search for SEC Filing on Google Icon
11/13/2025BNP Paribas Financial Markets386,189$14.07M0.0%+5.8%0.498%Search for SEC Filing on Google Icon
11/13/2025Franklin Resources Inc.16,348$0.60M0.0%+133.3%0.021%Search for SEC Filing on Google Icon
11/13/2025Legal & General Group Plc205,831$7.50M0.0%-4.3%0.266%Search for SEC Filing on Google Icon
11/13/2025Swiss National Bank149,400$5.44M0.0%+1.5%0.193%Search for SEC Filing on Google Icon
11/13/2025Russell Investments Group Ltd.42,470$1.55M0.0%+10.4%0.055%Search for SEC Filing on Google Icon
11/13/2025Pinnacle Associates Ltd.256,197$9.33M0.1%-4.2%0.331%Search for SEC Filing on Google Icon
11/13/2025Natixis Advisors LLC366,396$13.34M0.0%+19.4%0.473%Search for SEC Filing on Google Icon
11/13/2025First Trust Advisors LP61,038$2.22M0.0%+157.7%0.079%Search for SEC Filing on Google Icon
11/13/2025Neo Ivy Capital Management4,514$0.16M0.0%N/A0.006%Search for SEC Filing on Google Icon
11/13/2025Neuberger Berman Group LLC7,157$0.26M0.0%-9.6%0.009%Search for SEC Filing on Google Icon
11/12/2025Gabelli Funds LLC14,629$0.53M0.0%+25.8%0.019%Search for SEC Filing on Google Icon
11/12/2025Barclays PLC110,449$4.02M0.0%-27.7%0.142%Search for SEC Filing on Google Icon
11/12/2025Dimensional Fund Advisors LP2,170,967$79.07M0.0%-0.4%2.801%Search for SEC Filing on Google Icon
11/12/2025First Eagle Investment Management LLC301,169$10.97M0.0%+7.0%0.389%Search for SEC Filing on Google Icon
11/12/2025Teachers Retirement System of The State of Kentucky21,874$0.80M0.0%-4.6%0.028%Search for SEC Filing on Google Icon
11/12/2025Victory Capital Management Inc.22,057$0.80M0.0%-7.3%0.028%Search for SEC Filing on Google Icon
11/12/2025Fisher Asset Management LLC142,299$5.18M0.0%-5.9%0.184%Search for SEC Filing on Google Icon
11/12/2025Royce & Associates LP1,468,733$53.49M0.5%-10.6%1.895%Search for SEC Filing on Google Icon
11/12/2025Handelsbanken Fonder AB29,760$1.08M0.0%+40.0%0.038%Search for SEC Filing on Google Icon
11/12/2025Westfield Capital Management Co. LP1,026,657$37.39M0.2%N/A1.324%Search for SEC Filing on Google Icon
11/12/2025Primecap Management Co. CA2,324,614$84.66M0.1%+0.1%2.999%Search for SEC Filing on Google Icon
11/12/2025Intech Investment Management LLC40,524$1.48M0.0%+8.2%0.052%Search for SEC Filing on Google Icon
11/12/2025US Bancorp DE2,381$87K0.0%-23.3%0.003%Search for SEC Filing on Google Icon
11/10/2025EverSource Wealth Advisors LLC1,534$56K0.0%-16.8%0.002%Search for SEC Filing on Google Icon
11/10/2025Ameritas Investment Partners Inc.6,700$0.24M0.0%-17.3%0.009%Search for SEC Filing on Google Icon
11/10/2025Channing Capital Management LLC464,281$16.91M0.4%N/A0.599%Search for SEC Filing on Google Icon
11/7/2025GSA Capital Partners LLP9,040$0.33M0.0%-75.9%0.012%Search for SEC Filing on Google Icon
11/7/2025Vanguard Group Inc.10,299,864$375.12M0.0%+0.1%13.357%Search for SEC Filing on Google Icon
11/7/2025Fifth Third Bancorp25,763$0.94M0.0%-6.2%0.033%Search for SEC Filing on Google Icon
11/7/2025JPMorgan Chase & Co.271,535$9.89M0.0%-19.7%0.352%Search for SEC Filing on Google Icon
11/7/2025State of New Jersey Common Pension Fund D76,376$2.78M0.0%+24.8%0.099%Search for SEC Filing on Google Icon
11/7/2025PNC Financial Services Group Inc.16,169$0.59M0.0%+161.0%0.021%Search for SEC Filing on Google Icon
11/7/2025Shell Asset Management Co.1,155$42K0.0%-64.9%0.001%Search for SEC Filing on Google Icon
11/6/2025Abich Financial Wealth Management LLC3,833$0.14M0.0%N/A0.005%Search for SEC Filing on Google Icon
11/6/2025Public Sector Pension Investment Board300,744$10.95M0.0%+14.5%0.390%Search for SEC Filing on Google Icon
11/6/2025Illinois Municipal Retirement Fund39,902$1.45M0.0%+12.8%0.052%Search for SEC Filing on Google Icon
11/6/2025Rhumbline Advisers219,515$8M0.0%-1.5%0.285%Search for SEC Filing on Google Icon
11/6/2025ProShare Advisors LLC29,336$1.07M0.0%+68.8%0.038%Search for SEC Filing on Google Icon
11/6/2025Oppenheimer Asset Management Inc.71,583$2.61M0.0%+20.5%0.093%Search for SEC Filing on Google Icon
11/5/2025Bessemer Group Inc.714,081$26.01M0.0%+65.6%0.926%Search for SEC Filing on Google Icon
11/5/2025Savant Capital LLC13,011$0.47M0.0%-1.5%0.017%Search for SEC Filing on Google Icon
11/5/2025Hantz Financial Services Inc.1,043$38K0.0%+547.8%0.001%Search for SEC Filing on Google Icon
11/5/2025Envestnet Asset Management Inc.414,372$15.09M0.0%-2.3%0.537%Search for SEC Filing on Google Icon
11/4/2025Jones Financial Companies Lllp990$35K0.0%+84.4%0.001%Search for SEC Filing on Google Icon
11/4/2025State of Wyoming1,680$61K0.0%+18.4%0.002%Search for SEC Filing on Google Icon
11/4/2025Principal Financial Group Inc.372,827$13.58M0.0%-2.5%0.483%Search for SEC Filing on Google Icon
11/4/2025Thrivent Financial for Lutherans55,632$2.03M0.0%-1.8%0.072%Search for SEC Filing on Google Icon
11/3/2025AlphaQuest LLC10,906$0.40M0.0%+254.6%0.014%Search for SEC Filing on Google Icon
11/3/2025Arizona State Retirement System22,796$0.83M0.0%+1.5%0.030%Search for SEC Filing on Google Icon
11/3/2025LRI Investments LLC3,731$0.14M0.0%+17.1%0.005%Search for SEC Filing on Google Icon
11/3/2025New York State Common Retirement Fund133,887$4.88M0.0%+457.1%0.174%Search for SEC Filing on Google Icon
11/3/2025Federated Hermes Inc.18,616$0.68M0.0%-53.9%0.024%Search for SEC Filing on Google Icon
10/31/2025Vanguard Personalized Indexing Management LLC9,200$0.34M0.0%-7.7%0.012%Search for SEC Filing on Google Icon
10/31/2025Mutual of America Capital Management LLC8,638$0.32M0.0%-12.8%0.011%Search for SEC Filing on Google Icon
10/30/2025Strs Ohio4,000$0.15M0.0%-71.6%0.005%Search for SEC Filing on Google Icon
10/30/2025Universal Beteiligungs und Servicegesellschaft mbH8,206$0.30M0.0%N/A0.011%Search for SEC Filing on Google Icon
10/29/2025NorthCrest Asset Manangement LLC19,716$0.77M0.0%+38.8%0.026%Search for SEC Filing on Google Icon
10/29/2025Wealth Enhancement Advisory Services LLC15,703$0.61M0.0%-2.5%0.020%Search for SEC Filing on Google Icon
10/29/2025Amalgamated Bank22,420$0.82M0.0%+1.9%0.029%Search for SEC Filing on Google Icon
10/29/2025Massachusetts Financial Services Co. MA2,131,030$77.61M0.0%-3.9%2.764%Search for SEC Filing on Google Icon
10/29/2025Maryland State Retirement & Pension System11,086$0.40M0.0%-51.0%0.014%Search for SEC Filing on Google Icon
10/28/2025Reinhart Partners LLC.2,404,854$87.59M2.8%+26.3%3.119%Search for SEC Filing on Google Icon
10/27/2025Versant Capital Management Inc1,313$48K0.0%-26.2%0.002%Search for SEC Filing on Google Icon
Data available starting January 2016

See Full Table
FormFactor logo
FormFactor, Inc. designs, manufactures, and sells probe cards, analytical probes, probe stations, metrology systems, thermal systems, and cryogenic systems to semiconductor companies and scientific institutions in the United States, Taiwan, South Korea, China, Europe, Japan, Malaysia, Singapore, and internationally. It operates in two segments, Probe Cards and Systems. The company offers probe cards to test various semiconductor device types, including systems on a chip products, mobile application processors, microprocessors, microcontrollers, and graphic processors, as well as radio frequency, analog, mixed signal, image sensor, electro-optical, dynamic random access memory, NAND flash memory, and NOR flash memory devices, as well as computer processor devices; and analytical probes, which are used for a range of applications, including device characterization, electrical simulation model development, failure analysis, and prototype design debugging for universities, research institutions, semiconductor integrated device manufacturers, semiconductor foundries, and fabless semiconductor companies. It also provides probe systems for semiconductor design engineers to capture and analyze accurate data; surface metrology systems for the development, production, and quality control of semiconductor products; thermal subsystems, such as thermal chucks and other test systems used in probe stations and other applications; and precision cryogenic instruments, semiconductor tests, and measurement systems. In addition, the company offers on-site probe card maintenance and service training, seminars, and telephone support services. It markets and sells its products through direct sales force, manufacturers' representatives, and distributors. The company was incorporated in 1993 and is headquartered in Livermore, California.
Read More on FormFactor

Today's Range

Now: $57.35
Low: $56.43
High: $57.95

50 Day Range

MA: $47.18
Low: $35.28
High: $59.25

52 Week Range

Now: $57.35
Low: $22.58
High: $61.10

Volume

420,617 shs

Average Volume

750,354 shs

Market Capitalization

$4.45 billion

P/E Ratio

110.29

Dividend Yield

N/A

Beta

1.12

Who are the company insiders with the largest holdings of FormFactor?

FormFactor's top insider investors include:
  1. Mike Slessor (CEO)
  2. Shai Shahar (CFO)
  3. Dennis Thomas St (Director)
  4. Kelley Steven-Waiss (Director)
  5. Rebeca Obregon-Jimenez (Director)
  6. Jorge Titinger (Director)
  7. Brian C White (Director)
  8. Sheri Rhodes (Director)
Learn More about top insider investors at FormFactor.

Who are the major institutional investors of FormFactor?

FormFactor's top institutional investors include:
  1. Vanguard Group Inc. — 13.36%
  2. Earnest Partners LLC — 7.67%
  3. Bank of America Corp DE — 3.27%
  4. Reinhart Partners LLC. — 3.12%
  5. Alliancebernstein L.P. — 3.09%
  6. Primecap Management Co. CA — 3.00%
Learn More about top institutional investors of FormFactor stock.

Which major investors are selling FormFactor stock?

During the last quarter, FORM stock was sold by these institutional investors:
  1. Bank of America Corp DE
  2. Voya Investment Management LLC
  3. Allspring Global Investments Holdings LLC
  4. Royce & Associates LP
  5. Earnest Partners LLC
  6. UBS AM A Distinct Business Unit of UBS Asset Management Americas LLC
  7. Mirador Capital Partners LP
  8. Harbor Capital Advisors Inc.
In the last year, company insiders that have sold FormFactor company stock include:
  1. Mike Slessor (CEO)
  2. Shai Shahar (CFO)
  3. Dennis Thomas St (Director)
  4. Kelley Steven-Waiss (Director)
Learn More investors selling FormFactor stock.

Which major investors are buying FormFactor stock?

During the previous quarter, FORM stock was purchased by institutional investors including:
  1. Westfield Capital Management Co. LP
  2. Shannon River Fund Management LLC
  3. Reinhart Partners LLC.
  4. Channing Capital Management LLC
  5. Two Sigma Investments LP
  6. Bessemer Group Inc.
  7. Squarepoint Ops LLC
  8. Algert Global LLC