5 of 6 shown

This page is free to read, and it stops after 5 rows. Those are the 5 most recently posted filings for this company, out of 6. Reading the whole list, and what each filing says: its issues, the agencies contacted and the lobbyists named, is part of the subscription. So is sorting the list by the reported amount. What that costs is on the pricing page. Already subscribed? Sign in and this page opens in full.

No chart, because no filing here reports an amount. A registration and a “no activity” report carry none by design, and a filing below $5,000 ticks a box instead of stating a figure. Those are three different things and the list below says which is which.

Recent activity

Register facts only. Everything on this page comes from filings made under the Lobbying Disclosure Act of 1995 and kept by the Secretary of the Senate. We read the filings, we link a client to a listed company where a reviewed rule allows it, and we add nothing else. No score, no ranking and no judgement is attached to lobbying on this site. See the methodology and about this site.

5 of 6 filings

The most recently posted lobbying filings for OSTX
Registrant	Filing	Amount	Posted	Source	Registrant	Amount	Filing	All amounts	Posted	Source
CHAMBER HILL STRATEGIESfor OS THERAPIES	3rd Quarter - Report3rd Quarter 2026	under $5,000as reportedposted Oct 19, 2026	Oct 19, 2026	LD-2 at lda.gov	CHAMBER HILL STRATEGIESfor OS THERAPIES	under $5,000as reported · Oct 19	3rd Quarter - Report3rd Quarter 2026	under $5,000as reported	Oct 19, 2026	LD-2 at lda.gov
CHAMBER HILL STRATEGIESfor OS THERAPIES	2nd Quarter - Report2nd Quarter 2026	under $5,000as reportedposted Jul 19, 2026	Jul 19, 2026	LD-2 at lda.gov	CHAMBER HILL STRATEGIESfor OS THERAPIES	under $5,000as reported · Jul 19	2nd Quarter - Report2nd Quarter 2026	under $5,000as reported	Jul 19, 2026	LD-2 at lda.gov
CHAMBER HILL STRATEGIESfor OS THERAPIES	1st Quarter - Report1st Quarter 2026	under $5,000as reportedposted Apr 6, 2026	Apr 6, 2026	LD-2 at lda.gov	CHAMBER HILL STRATEGIESfor OS THERAPIES	under $5,000as reported · Apr 6	1st Quarter - Report1st Quarter 2026	under $5,000as reported	Apr 6, 2026	LD-2 at lda.gov
CHAMBER HILL STRATEGIESfor OS THERAPIES	4th Quarter - Report4th Quarter 2025	under $5,000as reportedposted Jan 20, 2026	Jan 20, 2026	LD-2 at lda.gov	CHAMBER HILL STRATEGIESfor OS THERAPIES	under $5,000as reported · Jan 20	4th Quarter - Report4th Quarter 2025	under $5,000as reported	Jan 20, 2026	LD-2 at lda.gov
CHAMBER HILL STRATEGIESfor OS THERAPIES	3rd Quarter - Report3rd Quarter 2025	under $5,000as reportedposted Oct 17, 2025	Oct 17, 2025	LD-2 at lda.gov	CHAMBER HILL STRATEGIESfor OS THERAPIES	under $5,000as reported · Oct 17, 2025	3rd Quarter - Report3rd Quarter 2025	under $5,000as reported	Oct 17, 2025	LD-2 at lda.gov

The link between the client names above and OSTX is a reviewed rule of ours, not something the filing states: an LD-2 names a client and carries no ticker, no CIK and no LEI.