FormFactor, Inc.
US ˙ NasdaqGS ˙ US3463751087

SecurityFORM / FormFactor, Inc.
InstitutionNeuberger Berman Group LLC
Latest Disclosed Ownership8,534 shares
Latest Disclosed Value $ 827,712
Neuberger Berman Group LLC reports 20.72% increase in ownership of FORM / FormFactor, Inc.

On May 14, 2026 - Neuberger Berman Group LLC filed a 13F-HR form disclosing ownership of 8,534 shares of FormFactor, Inc. (US:FORM) valued at $827,713 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 7,069 shares of FormFactor, Inc.. This represents a change in shares of 20.72% during the quarter. The current value of the position is $995,918 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F FORMFACTOR Common 346375108 8,534 1,465 20.72 828 109.90 0.0003
2026-02-13 2025-12-31 13F FORMFACTOR Common 346375108 7,069 -88 -1.23 394 51.54 0.0003
2025-11-12 2025-09-30 13F FORMFACTOR Common 346375108 7,157 -758 -9.58 261 -4.41 0.0002
2025-08-25 2025-06-30 13F/A-1 FORMFACTOR Common 346375108 7,915 -242,087 -96.83 272 -96.15 0.0002
2025-08-13 2025-06-30 13F FORMFACTOR Common 346375108 7,915 -242,087 272 0.0001
2025-05-13 2025-03-31 13F FORMFACTOR Common 346375108 250,002 -47,462 -15.96 7,073 -45.97 0.0059
2025-02-13 2024-12-31 13F FORMFACTOR Common 346375108 297,464 -21,148 -6.64 13,088 -10.70 0.0104
2024-11-14 2024-09-30 13F FORMFACTOR Common 346375108 318,612 45,600 16.70 14,656 -11.31 0.0114
2024-11-14 2024-06-30 13F/A-1 FORMFACTOR Common 346375108 273,012 240,014 727.36 16,525 998.01 0.0136
2024-08-13 2024-06-30 13F FORMFACTOR Common 346375108 273,012 240,014 16,525 0.0070
2024-11-14 2024-03-31 13F/A-1 FORMFACTOR Common 346375108 32,998 32,998 1,506 0.0012
2024-05-13 2024-03-31 13F FORMFACTOR Common 346375108 32,998 32,998 1,506 0.0012
2023-08-11 2023-06-30 13F FORMFACTOR Common 346375108 0 -2,591,407 -100.00 0 -100.00
2023-05-12 2023-03-31 13F FORMFACTOR Common 346375108 2,591,407 -44,618 -1.69 82,536 40.85 0.0765
2023-02-13 2022-12-31 13F FORMFACTOR Common 346375108 2,636,025 554,753 26.65 58,599 12.39 0.0574
2022-11-15 2022-09-30 13F FORMFACTOR Common 346375108 2,081,272 -12,613 -0.60 52,136 -35.71 0.0544
2022-08-15 2022-06-30 13F FORMFACTOR Common 346375108 2,093,885 132,148 6.74 81,096 -1.64 0.0815
2022-05-23 2022-03-31 13F/A-1 FORMFACTOR Common 346375108 1,961,737 1,961,737 82,452 0.0699
2022-05-13 2022-03-31 13F FORMFACTOR Common 346375108 1,961,737 1,961,737 82,405 0.0368
2018-05-08 2018-03-31 13F FORMFACTOR Common 346375108 0 -792,567 -100.00 0 -100.00
2018-02-14 2017-12-31 13F FORMFACTOR Common 346375108 792,567 -173,082 -17.92 12,406 -23.75 0.0143
2017-11-15 2017-09-30 13F FORMFACTOR COMMON STOCK 346375108 965,649 -357,019 -26.99 16,271 -0.79 0.0204
2017-08-08 2017-06-30 13F FORMFACTOR COMMON STOCK 346375108 1,322,668 -616,299 -31.78 16,401 -28.62 0.0211
2017-05-10 2017-03-31 13F FORMFACTOR COMMON STOCK 346375108 1,938,967 -198,239 -9.28 22,977 -4.01 0.0297
2017-02-06 2016-12-31 13F FORMFACTOR COMMON STOCK 346375108 2,137,206 -24,124 -1.12 23,937 2.08 0.0321
2016-11-02 2016-09-30 13F FORMFACTOR COMMON STOCK 346375108 2,161,330 29,935 1.40 23,450 22.38 0.0318
2016-08-05 2016-06-30 13F FORMFACTOR COMMON STOCK 346375108 2,131,395 2,937 0.14 19,161 23.83 0.0264
2016-05-06 2016-03-31 13F FORMFACTOR COMMON STOCK 346375108 2,128,458 152,155 7.70 15,474 -13.00 0.0213
2016-01-28 2015-12-31 13F FORMFACTOR COMMON STOCK 346375108 1,976,303 29,012 1.49 17,787 34.72 0.0233
2015-11-10 2015-09-30 13F FORMFACTOR COMMON STOCK 346375108 1,947,291 218,494 12.64 13,203 -16.99 0.0170
2015-07-31 2015-06-30 13F FORMFACTOR COMMON STOCK 346375108 1,728,797 149,455 9.46 15,905 13.53 0.0177
2015-05-06 2015-03-31 13F FORMFACTOR COMMON STOCK 346375108 1,579,342 1,579,342 0.00 14,009 0.0150
2015-02-05 2014-12-31 13F FORMFACTOR COMMON STOCK 346375108 0 -1,494,057 -100.00 0 -100.00
2014-11-04 2014-09-30 13F FORMFACTOR COMMON STOCK 346375108 1,494,057 2,422 0.16 10,712 -13.68 0.0110
2014-08-05 2014-06-30 13F FORMFACTOR COMMON STOCK 346375108 1,491,635 -55,680 -3.60 12,410 25.52 0.0121
2014-05-05 2014-03-31 13F FORMFACTOR COMMON STOCK 346375108 1,547,315 15,675 1.02 9,887 7.41 0.0101
2014-02-11 2013-12-31 13F FORMFACTOR COMMON STOCK 346375108 1,531,640 -68,769 -4.30 9,205 -16.16 0.0095
2013-10-29 2013-09-30 13F/A-1 FORMFACTOR COMMON STOCK 346375108 1,600,409 314,757 24.48 10,979 26.52 0.0122
2013-10-29 2013-09-30 13F FORMFACTOR COMMON STOCK 346375108 1,230,626 6,867
2013-08-13 2013-06-30 13F FORMFACTOR COMMON STOCK 346375108 1,285,652 1,285,652 8,678 0.0103
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.