Onterris, Inc.
DE ˙ MUN ˙ US6151111019
14,80 € ↑0,40 (2,78%)
2026-06-05
DEL PRIS
SecurityDE:5MO / Onterris, Inc.
InstitutionSummit Creek Advisors LLC
Latest Disclosed Ownership511,160 shares
Latest Disclosed Value $ 11,189,292
Summit Creek Advisors LLC reports 18.71% decrease in ownership of 5MO / Onterris, Inc.

On May 6, 2026 - Summit Creek Advisors LLC filed a 13F-HR form disclosing ownership of 511,160 shares of Onterris, Inc. (DE:5MO) valued at $9,609,808 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 628,786 shares of Onterris, Inc.. This represents a change in shares of -18.71% during the quarter. The current value of the position is $7,565,168 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)
2026-05-06 2026-03-31 13F ONTERRIS INC COM COM 615111101 511,160 -117,626 -18.71 11,189 -28.33 2.2986
2026-02-06 2025-12-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 628,786 60,237 10.59 15,613 0.00 2.4565
2025-10-24 2025-09-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 568,549 -58,011 -9.26 15,612 13.83 2.2755
2025-08-06 2025-06-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 626,560 42,046 7.19 13,715 64.55 1.9086
2025-05-07 2025-03-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 584,514 6,840 1.18 8,335 -22.21 1.2175
2025-02-11 2024-12-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 577,674 190,992 49.39 10,716 5.37 1.4088
2024-11-12 2024-09-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 386,682 180,705 87.73 10,170 10.80 1.3814
2024-08-05 2024-06-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 205,977 -23,965 -10.42 9,178 1.91 1.2572
2024-05-10 2024-03-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 229,942 1,598 0.70 9,007 22.76 1.1354
2024-02-07 2023-12-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 228,344 41,189 22.01 7,337 33.97 0.9818
2023-10-30 2023-09-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 187,155 -3,542 -1.86 5,476 -31.82 0.7449
2023-08-09 2023-06-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 190,697 -86,581 -31.23 8,032 -18.79 1.0043
2023-05-05 2023-03-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 277,278 1,779 0.65 9,891 -19.13 1.2875
2023-02-10 2022-12-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 275,499 303 0.11 12,229 32.06 1.6642
2022-11-01 2022-09-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 275,196 -9,035 -3.18 9,260 -3.50 1.2752
2022-08-11 2022-06-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 284,231 122,156 75.37 9,596 11.85 1.2229
2022-05-09 2022-03-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 162,075 632 0.39 8,579 -24.63 0.9713
2022-02-10 2021-12-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 161,443 -41,372 -20.40 11,383 -9.10 1.1431
2021-11-08 2021-09-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 202,815 -40,275 -16.57 12,522 -4.00 1.3243
2021-08-04 2021-06-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 243,090 -10,100 -3.99 13,044 2.64 1.5586
2021-04-20 2021-03-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 253,190 129,440 104.60 12,708 231.71 1.5146
2021-01-20 2020-12-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 123,750 123,750 3,831 0.4915
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.