Proto Labs, Inc.
US ˙ NYSE ˙ US7437131094

SecurityPRLB / Proto Labs, Inc.
InstitutionFirst Trust Advisors Lp
Latest Disclosed Ownership92,870 shares
Latest Disclosed Value $ 5,295,447
First Trust Advisors Lp reports 12.33% decrease in ownership of PRLB / Proto Labs, Inc.

On May 13, 2026 - First Trust Advisors Lp filed a 13F-HR form disclosing ownership of 92,870 shares of Proto Labs, Inc. (US:PRLB) valued at $5,295,447 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 105,929 shares of Proto Labs, Inc.. This represents a change in shares of -12.33% during the quarter. The current value of the position is $6,934,603 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)
2026-05-13 2026-03-31 13F PROTO LABS COM 743713109 92,870 -13,059 -12.33 5,295 -1.18 0.0038
2026-02-13 2025-12-31 13F PROTO LABS COM 743713109 105,929 22,213 26.53 5,359 27.94 0.0039
2025-11-12 2025-09-30 13F PROTO LABS COM 743713109 83,716 -19,538 -18.92 4,188 1.31 0.0031
2025-08-13 2025-06-30 13F PROTO LABS COM 743713109 103,254 -521,467 -83.47 4,134 -81.11 0.0033
2025-05-14 2025-03-31 13F PROTO LABS COM 743713109 624,721 -113,855 -15.42 21,890 -24.18 0.0194
2025-02-13 2024-12-31 13F PROTO LABS COM 743713109 738,576 308,970 71.92 28,871 128.82 0.0254
2024-11-13 2024-09-30 13F PROTO LABS COM 743713109 429,606 -12,936 -2.92 12,618 -7.70 0.0120
2024-08-13 2024-06-30 13F PROTO LABS COM 743713109 442,542 4,826 1.10 13,670 -12.64 0.0139
2024-05-13 2024-03-31 13F PROTO LABS COM 743713109 437,716 146,370 50.24 15,648 37.87 0.0159
2024-02-13 2023-12-31 13F PROTO LABS COM 743713109 291,346 -124,633 -29.96 11,351 3.36 0.0124
2023-11-13 2023-09-30 13F PROTO LABS COM 743713109 415,979 54,613 15.11 10,982 -13.08 0.0130
2023-08-14 2023-06-30 13F PROTO LABS COM 743713109 361,366 -179,998 -33.25 12,633 -29.61 0.0144
2023-05-15 2023-03-31 13F PROTO LABS COM 743713109 541,364 266,724 97.12 17,946 155.97 0.0207
2023-02-09 2022-12-31 13F PROTO LABS COM 743713109 274,640 104,804 61.71 7,012 13.32 0.0083
2022-11-14 2022-09-30 13F PROTO LABS COM 743713109 169,836 12,586 8.00 6,187 -17.76 0.0080
2022-08-12 2022-06-30 13F PROTO LABS COM 743713109 157,250 22,896 17.04 7,523 5.85 0.0093
2022-05-13 2022-03-31 13F PROTO LABS COM 743713109 134,354 9,818 7.88 7,107 11.13 0.0073
2022-02-08 2021-12-31 13F PROTO LABS COM 743713109 124,536 66,707 115.35 6,395 66.06 0.0062
2021-11-15 2021-09-30 13F PROTO LABS COM 743713109 57,829 13,990 31.91 3,851 -4.30 0.0041
2021-10-12 2021-06-30 13F/A-1 PROTO LABS COM 743713109 43,839 1,584 3.75 4,024 -21.79 0.0044
2021-08-16 2021-06-30 13F PROTO LABS COM 743713109 43,839 1,584 4,024 0.0042
2021-05-14 2021-03-31 13F PROTO LABS COM 743713109 42,255 -2,798 -6.21 5,145 -25.55 0.0062
2021-02-02 2020-12-31 13F PROTO LABS COM 743713109 45,053 2,215 5.17 6,911 24.57 0.0092
2020-11-05 2020-09-30 13F PROTO LABS COM 743713109 42,838 14,497 51.15 5,548 74.03 0.0089
2020-07-22 2020-06-30 13F PROTO LABS COM 743713109 28,341 8,731 44.52 3,188 113.53 0.0055
2020-05-06 2020-03-31 13F PROTO LABS COM 743713109 19,610 -4,013 -16.99 1,493 -37.77 0.0034
2020-02-03 2019-12-31 13F PROTO LABS COM 743713109 23,623 -8,639 -26.78 2,399 -27.17 0.0041
2019-11-04 2019-09-30 13F PROTO LABS COM 743713109 32,262 15,684 94.61 3,294 71.29 0.0062
2019-07-30 2019-06-30 13F PROTO LABS COM 743713109 16,578 -25,094 -60.22 1,923 -56.11 0.0036
2019-06-19 2019-03-31 13F/A-1 PROTO LABS COM 743713109 41,672 -30,913 -42.59 4,381 -46.49 0.0087
2019-05-09 2019-03-31 13F PROTO LABS COM 743713109 41,672 -30,913 4,381
2019-02-07 2018-12-31 13F PROTO LABS COM 743713109 72,585 -5,335 -6.85 8,187 -35.04 0.0194
2018-10-25 2018-09-30 13F PROTO LABS COM 743713109 77,920 -7,591 -8.88 12,604 23.91 0.0235
2018-08-02 2018-06-30 13F PROTO LABS COM 743713109 85,511 -10,055 -10.52 10,172 -9.45 0.0211
2018-04-23 2018-03-31 13F PROTO LABS COM 743713109 95,566 -1,988 -2.04 11,234 11.80 0.0258
2018-02-08 2017-12-31 13F PROTO LABS COM 743713109 97,554 21,966 29.06 10,048 65.54 0.0239
2017-10-24 2017-09-30 13F PROTO LABS COM 743713109 75,588 -60,645 -44.52 6,070 -33.75 0.0156
2017-08-02 2017-06-30 13F PROTO LABS COM 743713109 136,233 136,233 9,162 0.0245
2016-11-01 2016-09-30 13F PROTO LABS COM 743713109 0 -17,393 -100.00 0 -100.00
2016-08-04 2016-06-30 13F PROTO LABS COM 743713109 17,393 17,393 0.00 1,001 0.0032
2014-08-11 2014-06-30 13F PROTO LABS COM 743713109 0 -4,840 -100.00 0 -100.00
2014-05-12 2014-03-31 13F PROTO LABS COM 743713109 4,840 -124,965 -96.27 328 -96.45 0.0014
2014-08-08 2013-12-31 13F/A-1 PROTO LABS COM 743713109 129,805 -1,038 -0.79 9,240 -7.55 0.0448
2014-02-13 2013-12-31 13F PROTO LABS COM 743713109 129,805 9,240
2013-11-12 2013-09-30 13F PROTO LABS COM 743713109 130,843 2,793 2.18 9,995 20.15 0.0542
2013-08-12 2013-06-30 13F PROTO LABS COM 743713109 128,050 128,050 8,319 0.0541
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.