FormFactor Ownership | Who Owns FormFactor?


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FormFactor Ownership Summary


FormFactor is owned by 77.31% institutional investors, 0.73% insiders, and 21.97% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 15.83% of FORM shares. iShares Core S&P Small-Cap ETF is the top mutual fund, with 6.06% of its assets in FormFactor shares.

FORM Ownership Benchmark


TypeName% Inst% Insiders% Retail
StockFormFactor77.31%0.73%21.97%
SectorTechnology Stocks 36.63%15.07%48.30%

Institutional Shareholders


Top Institutional Shareholders by Total Shares

HolderShares% HoldingValue
Blackrock funding, inc. /de12.25M15.83%$1.19B
Vanguard group10.22M13.21%$570.16M
Earnest partners4.88M6.30%$472.84M
State street2.93M3.79%$284.00M
Polar capital2.29M2.96%$222.33M
Alliancebernstein2.23M2.89%$124.47M
Geode capital management2.19M2.83%$212.23M
Primecap management co/ca/1.79M2.31%$173.48M
Sei investments1.68M2.17%$163.17M
Dimensional fund advisors lp1.41M1.83%$136.94M

Top Institutional Shareholders by % of Total Assets

HolderShares% AssetsValue
Shannon river fund management968.16K5.68%$35.26M
Reinhart partners1.16M3.23%$112.48M
Needham investment management603.50K2.99%$58.53M
Kadensa capital147.93K2.00%$14.35M
Earnest partners4.88M1.95%$472.84M
Decker retirement planning38.35K1.69%$3.72M
Hanseatic management services13.75K1.28%$1.33M
Montanaro asset management125.00K1.14%$4.55B
Herald investment management75.30K1.02%$7.30M
Eam investors73.58K0.82%$7.14M

Top Buyers

HolderShares% AssetsChange
Polar capital2.29M0.79%2.29M
Shannon river fund management968.16K5.68%968.16K
Invesco1.24M0.02%905.44K
Alliancebernstein2.23M0.04%816.85K
Jane street group925.62K0.01%807.08K

Top Sellers

HolderShares% AssetsChange
Hood river capital management---1.63M
Channing capital management7.58K0.02%-993.15K
Reinhart partners1.16M3.23%-992.65K
Morgan stanley1.31M0.01%-962.64K
Earnest partners4.88M1.95%-899.83K

New Positions

HolderShares% AssetsChangeValue
Polar capital2.29M0.79%2.29M$222.33M
Shannon river fund management968.16K5.68%968.16K$35.26M
Norges bank563.84K0.00%563.84K$31.45M
Vanguard fiduciary trust530.78K0.01%530.78K$51.48M
Nomura asset management239.90K0.06%239.90K$23.27M

Sold Out

HolderChange
Steward partners investment advisory-1.00
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

Institutional Ownership Trends


DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
Mar 31, 20263430.29%59,795,744-21.34%770.81%1981.54%104-3.70%
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%

Top Mutual Funds Shareholders


HolderShares% HoldingChange
iShares Core S&P Small-Cap ETF4.72M6.06%972.00
Vanguard Total Stock Mkt Idx Inv2.48M3.18%14.08K
Vanguard US Total Market Shares ETF2.45M3.18%1.94K
iShares Russell 2000 ETF1.84M2.35%15.46K
Vanguard Small Cap Index1.80M2.30%-3.57K
EARNEST Partners Smid Cap Core Fdrs1.47M1.88%-107.02K
EARNEST Partners Smid Cap Core Founders1.47M1.88%-107.02K
Polar Capital Global Tech Inc1.17M1.51%-361.94K
Vanguard Information Technology ETF1.12M1.44%-364.99K
Vanguard Capital Opportunity Inv1.10M1.41%-94.70K

Recent Insider Transactions


DateNameRoleActivityValue
Jun 15, 2026St Dennis Thomas-Sell$424.17K
Jun 10, 2026SLESSOR MIKE CEOSell$164.66K
Jun 10, 2026SLESSOR MIKE CEOSell$91.27K
Jun 10, 2026SLESSOR MIKE CEOSell$47.78K
Jun 10, 2026SLESSOR MIKE CEOSell$117.97K

Insider Transactions Trends


DateBuySell
2026 Q2-31
2026 Q1-19
2025 Q4-6
2025 Q3-3
2025 Q2-4

FORM Ownership FAQ


Who owns the most shares of FormFactor?

FormFactor’s largest shareholders are Blackrock funding, inc. /de (12.25M shares, 15.83%), Vanguard group (10.22M shares, 13.21%), and Earnest partners (4.88M shares, 6.30%). Together, they hold 35.35% 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 6.06% of its total shares outstanding invested in 4.72M FormFactor shares.

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