Proto Labs, Inc.
DE ˙ DB ˙ US7437131094
64,05 € ↓ -2,90 (-4,33%)
2026-06-03
DEL PRIS
SecurityDE:PRZ / Proto Labs, Inc.
InstitutionStrs Ohio
Latest Disclosed Ownership13,200 shares
Latest Disclosed Value $ 752,664
Strs Ohio reports 5.71% decrease in ownership of PRZ / Proto Labs, Inc.

On April 24, 2026 - Strs Ohio filed a 13F-HR form disclosing ownership of 13,200 shares of Proto Labs, Inc. (DE:PRZ) valued at $647,064 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 14,000 shares of Proto Labs, Inc.. This represents a change in shares of -5.71% during the quarter. The current value of the position is $845,460 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)
2026-04-24 2026-03-31 13F PROTO LABS COM_STK 743713109 13,200 -800 -5.71 753 6.21 0.0030
2026-02-02 2025-12-31 13F PROTO LABS COM_STK 743713109 14,000 -500 -3.45 708 -2.34 0.0026
2025-10-30 2025-09-30 13F PROTO LABS COM_STK 743713109 14,500 -1,600 -9.94 725 12.58 0.0027
2025-08-04 2025-06-30 13F PROTO LABS COM_STK 743713109 16,100 -900 -5.29 645 8.24 0.0024
2025-05-28 2025-03-31 13F PROTO LABS COM_STK 743713109 17,000 400 2.41 596 -8.18 0.0025
2025-05-28 2024-12-31 13F PROTO LABS COM_STK 743713109 16,600 -3,100 -15.74 649 12.11 0.0026
2024-11-01 2024-09-30 13F PROTO LABS COM_STK 743713109 19,700 0 0.00 579 -4.93 0.0022
2024-08-05 2024-06-30 13F PROTO LABS COM_STK 743713109 19,700 2,600 15.20 609 0.0024
2024-05-13 2024-03-31 13F PROTO LABS COM_STK 743713109 17,100 -1,100 -6.04 1 0.0024
2024-01-30 2023-12-31 13F PROTO LABS COM 743713109 18,200 -1,000 -5.21 1 0.0030
2023-10-26 2023-09-30 13F/A-1 PROTO LABS COM 743713109 19,200 0 0.00 1 0.0023
2023-10-26 2023-09-30 13F PROTO LABS COM 743713109 19,200 0 1 0.0023
2023-07-31 2023-06-30 13F PROTO LABS COM 743713109 19,200 1,500 8.47 1 0.0028
2023-08-02 2023-03-31 13F/A-2 PROTO LABS COM 743713109 17,700 0 0.00 1 0.0025
2023-08-02 2023-03-31 13F/A-1 PROTO LABS COM 743713109 17,700 1
2023-04-27 2023-03-31 13F PROTO LABS COM 743713109 17,700 0 1 0.0030
2023-01-26 2022-12-31 13F PROTO LABS COM 743713109 17,700 0 0.00 0 -100.00 0.0020
2022-10-27 2022-09-30 13F PROTO LABS COM 743713109 17,700 0 0.00 644 -23.88 0.0031
2022-07-25 2022-06-30 13F PROTO LABS COM 743713109 17,700 5,700 47.50 846 33.44 0.0038
2022-04-21 2022-03-31 13F PROTO LABS COM 743713109 12,000 12,000 634 0.0023
2021-07-26 2021-06-30 13F PROTO LABS COM 743713109 0 -2,700 -100.00 0 -100.00
2021-04-23 2021-03-31 13F PROTO LABS COM 743713109 2,700 0 0.00 328 -20.77 0.0012
2021-01-25 2020-12-31 13F PROTO LABS COM 743713109 2,700 -900 -25.00 414 -11.16 0.0016
2020-12-14 2020-09-30 13F PROTO LABS COM 743713109 3,600 -7,300 -66.97 466 -61.96 0.0020
2020-07-23 2020-06-30 13F PROTO LABS COM 743713109 10,900 9,100 505.56 1,225 794.16 0.0054
2020-04-23 2020-03-31 13F PROTO LABS COM 743713109 1,800 200 12.50 137 -15.43 0.0007
2020-01-24 2019-12-31 13F PROTO LABS COM 743713109 1,600 -1,500 -48.39 162 -48.73 0.0007
2019-10-21 2019-09-30 13F/A-1 PROTO LABS COM 743713109 3,100 -8,800 -73.95 316 -77.10 0.0014
2019-10-21 2019-09-30 13F PROTO LABS COM 743713109 3,100 1,500 316 1,398.6335
2019-07-25 2019-06-30 13F PROTO LABS COM 743713109 11,900 700 6.25 1,380 17.25 0.0061
2019-04-19 2019-03-31 13F PROTO LABS COM 743713109 11,200 0 0.00 1,177 -6.81 0.0053
2019-01-23 2018-12-31 13F PROTO LABS COM 743713109 11,200 0 0.00 1,263 -30.26 0.0064
2018-10-19 2018-09-30 13F PROTO LABS COM 743713109 11,200 -1,600 -12.50 1,811 18.99 0.0079
2018-08-06 2018-06-30 13F PROTO LABS COM 743713109 12,800 700 5.79 1,522 7.03 0.0066
2018-04-20 2018-03-31 13F PROTO LABS COM 743713109 12,100 11,300 1,412.50 1,422 1,634.15 0.0063
2018-01-23 2017-12-31 13F PROTO LABS COM 743713109 800 0 0.00 82 34.43 0.0004
2016-04-25 2016-03-31 13F/A-1 PROTO LABS COM 743713109 800 800 0.00 61 0.0003
2016-01-28 2015-12-31 13F PROTO LABS COM 743713109 0 -15,500 -100.00 0 -100.00
2015-10-21 2015-09-30 13F PROTO LABS COM 743713109 15,500 15,500 0.00 1,038 0.0049
2015-08-04 2015-06-30 13F PROTO LABS COM 743713109 0 -16,200 -100.00 0 -100.00
2015-04-27 2015-03-31 13F/A-1 PROTO LABS COM 743713109 16,200 500 3.18 1,134 7.59 0.0050
2015-04-21 2015-03-31 13F PROTO LABS COM 743713109 16,200 1,134
2015-01-23 2014-12-31 13F PROTO LABS COM 743713109 15,700 0 0.00 1,054 -2.68 0.0046
2014-10-29 2014-09-30 13F/A-1 PROTO LABS COM 743713109 15,700 500 3.29 1,083 -13.01 0.0048
2014-10-20 2014-09-30 13F PROTO LABS COM 743713109 15,700 1,083
2014-07-24 2014-06-30 13F PROTO LABS COM 743713109 15,200 0 0.00 1,245 20.99 0.0055
2014-04-28 2014-03-31 13F PROTO LABS COM 743713109 15,200 -500 -3.18 1,029 -7.96 0.0046
2014-01-30 2013-12-31 13F PROTO LABS COM 743713109 15,700 -1,300 -7.65 1,118 -13.93 0.0050
2013-10-24 2013-09-30 13F PROTO LABS COM 743713109 17,000 -1,700 -9.09 1,299 6.91 0.0057
2013-08-12 2013-06-30 13F PROTO LABS COM 743713109 18,700 18,700 1,215 0.0052
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.