FormFactor Ownership | Who Owns FormFactor?


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FormFactor Ownership Summary


FormFactor is owned by 20.01% institutional investors, 0.88% insiders, and 79.11% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 14.96% of FORM shares. iShares Core S&P Small-Cap ETF is the top mutual fund, with 6.02% of its assets in FormFactor shares.

FORM Ownership Benchmark


TypeName% Inst% Insiders% Retail
StockFormFactor20.01%0.88%79.11%
SectorTechnology Stocks 35.46%13.12%51.43%

Institutional Shareholders


Top Institutional Shareholders by Total Shares

HolderShares% HoldingValue
Blackrock funding, inc. /de11.57M14.96%$645.35M
Vanguard group10.22M13.21%$570.16M
Earnest partners5.77M7.44%$322.13M
State street2.92M3.78%$106.26M
Alliancebernstein2.40M3.10%$87.30M
Morgan stanley2.27M2.94%$126.71M
Reinhart partners2.15M2.77%$120.06M
Primecap management co/ca/2.08M2.69%$116.09M
Geode capital management1.89M2.44%$105.21M
Dimensional fund advisors lp1.72M2.22%$96.07M

Top Institutional Shareholders by % of Total Assets

HolderShares% AssetsValue
Shannon river fund management968.16K5.68%$35.26M
Reinhart partners2.15M3.60%$120.06M
Needham investment management740.00K1.88%$26.95M
Earnest partners5.77M1.38%$322.13M
Montanaro asset management125.00K1.14%$4.55B
Pier capital86.30K0.77%$4.81M
Royce & associates lp1.16M0.65%$64.59M
Herald investment management118.30K0.57%$4.31M
Jackson creek investment advisors30.55K0.50%$1.70M
Polymer capital management (us)122.00K0.47%$4.44M

Top Buyers

HolderShares% AssetsChange
Morgan stanley2.27M0.01%1.13M
Fuller & thaler asset management1.08M0.21%1.08M
Shannon river fund management968.16K5.68%968.16K
Price t rowe associates inc /md/655.75K0.00%564.93K
Norges bank563.84K0.00%563.84K

Top Sellers

HolderShares% AssetsChange
Hood river capital management---1.63M
Wellington management group llp---1.16M
Silvercrest asset management group17.91K0.00%-890.49K
Massachusetts financial services co /ma/1.37M0.02%-762.01K
Bank of new york mellon751.35K0.01%-674.00K

New Positions

HolderShares% AssetsChangeValue
Fuller & thaler asset management1.08M0.21%1.08M$60.49M
Shannon river fund management968.16K5.68%968.16K$35.26M
Norges bank563.84K0.00%563.84K$31.45M
Polymer capital management (us)122.00K0.47%122.00K$4.44M
Herald investment management118.30K0.57%118.30K$4.31M

Sold Out

HolderChange
Thurston, springer, miller, herd & titak-2.00
Cbiz investment advisory services-3.00
Claris advisors, llc / mo /-4.00
Global financial private client-5.00
Southstate-5.00

Institutional Ownership Trends


DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
Dec 31, 2025103-63.73%15,476,595-79.37%200.21%52-60.90%33-68.57%
Sep 30, 2025110-63.93%22,602,276-70.00%290.31%39-75.78%49-51.49%
Jun 30, 20253006.76%75,260,965-0.29%971.02%16010.34%976.59%
Mar 31, 202511-96.45%1,938,858-97.45%20.03%6-96.32%4-96.00%
Dec 31, 2024306-4.67%75,988,9612.98%981.08%160-11.11%100-0.99%

Top Mutual Funds Shareholders


HolderShares% HoldingChange
iShares Core S&P Small-Cap ETF4.69M6.02%-513.92K
Vanguard US Total Market Shares ETF2.45M3.18%1.94K
Vanguard Total Stock Mkt Idx Inv2.44M3.13%6.09K
Vanguard Information Technology ETF1.90M2.44%7.88K
iShares Russell 2000 ETF1.88M2.41%198.30K
Vanguard Small Cap Index1.76M2.25%-137.00
EARNEST Partners Smid Cap Core Founders1.59M2.05%-23.57K
Vanguard Capital Opportunity Inv1.19M1.53%-38.30K
Harbor Small Cap Value Instl1.09M1.40%-57.35K
Vanguard Small Cap Growth Index Inv976.37K1.25%-14.52K

Recent Insider Transactions


DateNameRoleActivityValue
Mar 18, 2026SLESSOR MIKE CEOSell$523.18K
Mar 18, 2026SLESSOR MIKE CEOSell$178.79K
Mar 18, 2026SLESSOR MIKE CEOSell$271.11K
Mar 05, 2026McKinnis Aric Brendan CFO, SVP Global FinanceSell$313.03K
Feb 24, 2026WHITE BRIAN C-Sell$230.02K

Insider Transactions Trends


DateBuySell
2026 Q1-19
2025 Q4-6
2025 Q3-3
2025 Q2-4
2025 Q1-6

FORM Ownership FAQ


Who owns the most shares of FormFactor?

FormFactor’s largest shareholders are Blackrock funding, inc. /de (11.57M shares, 14.96%), Vanguard group (10.22M shares, 13.21%), and Earnest partners (5.77M shares, 7.44%). Together, they hold 35.62% of FormFactor’s total shares outstanding.

Does Blackrock own FormFactor?

BlackRock is not among the top 10 institutional shareholders of FormFactor.

Who is FormFactor’s biggest shareholder by percentage of total assets invested?

Shannon river fund management is FormFactor’s biggest shareholder by percentage of total assets invested, with 5.68% of its assets in 968.16K FormFactor shares, valued at 35.26M$.

Who is the top mutual fund holder of FormFactor shares?

iShares Core S&P Small-Cap ETF is the top mutual fund holder of FormFactor shares, with 6.02% of its total shares outstanding invested in 4.69M FormFactor shares.

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