Onterris, Inc.
DE ˙ MUN ˙ US6151111019
14,40 € ↑0,30 (2,13%)
2026-06-04
DEL PRIS
SecurityDE:5MO / Onterris, Inc.
InstitutionAvalon Trust Co
Latest Disclosed Ownership436,494 shares
Latest Disclosed Value $ 9,554,854
Avalon Trust Co reports 2.09% increase in ownership of 5MO / Onterris, Inc.

On May 6, 2026 - Avalon Trust Co filed a 13F-HR form disclosing ownership of 436,494 shares of Onterris, Inc. (DE:5MO) valued at $8,206,087 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 427,549 shares of Onterris, Inc.. This represents a change in shares of 2.09% during the quarter. The current value of the position is $6,285,514 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 MONTROSE ENVIRONMENTAL GROUP COM 615111101 436,494 8,945 2.09 9,555 -10.00 0.6583
2026-02-09 2025-12-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 427,549 261,487 157.46 10,616 132.81 0.6866
2025-11-10 2025-09-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 166,062 1,660 1.01 4,560 26.74 0.2961
2025-08-08 2025-06-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 164,402 -30,395 -15.60 3,599 29.56 0.2631
2025-05-09 2025-03-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 194,797 -15,068 -7.18 2,778 -28.65 0.2209
2025-02-10 2024-12-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 209,865 -900 -0.43 3,893 -29.79 0.2768
2024-11-13 2024-09-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 210,765 74,190 54.32 5,543 -8.91 0.4098
2024-08-12 2024-06-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 136,575 -75 -0.05 6,086 13.70 0.4817
2024-05-07 2024-03-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 136,650 1,850 1.37 5,353 23.57 0.4390
2024-02-06 2023-12-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 134,800 5,750 4.46 4,331 14.70 0.3958
2023-11-13 2023-09-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 129,050 -100 -0.08 3,776 -30.58 0.3740
2023-08-09 2023-06-30 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 129,150 1,775 1.39 5,440 19.72 0.4920
2023-05-11 2023-03-31 13F MONTROSE ENVIRONMENTAL GROUP COM 615111101 127,375 127,375 4,543 0.4506
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.