CenterBook Partners LP

Position in ONT — Onterris, Inc.

CIK 1872738 GREENWICH, CT

Position in ONT

as of Jun 30, 2026 · filed Aug 11, 2026 Compact

Position Value

$5,341,482

+$2,265,762 QoQ

Shares Held

264,299

+88.1% QoQ

Ownership

0.753%

of shares outstanding

% of Portfolio

0.26%

of 13F equity value

Holder Rank

#35

of 156 holders

Holding Since

Sep 2025

4 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Industrials · as of Jun 30, 2026

CenterBook Partners LP holds $8,377,148 across 4 Waste Management names. ONT ranks #1 (63.8% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ONT	Onterris, Inc. This page	264,299	$5,341,482
2	GFL	GFL Environmental Inc.	54,336	$1,999,021
3	NVRI	Enviri Corp	37,725	$828,063
4	CWST	Casella Waste Systems Inc	2,151	$208,582

4 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$5,341,482	264,299	+88.1%	Shares	Sole	2026-08-11
2026-03-31	$3,075,720	140,508	+26.8%	Shares	Sole	2026-05-05
2025-12-31	$2,751,660	110,820	+17.6%	Shares	Sole	2026-02-11
2025-09-30	$2,586,979	94,209	—	Shares	Sole	2025-11-07
No filing history on record for this holder in this stock.