Question 1

Who are the insiders buying Atrium Therapeutics, Inc. stock?

Accepted Answer

InsiderAct tracks all open-market purchases of Atrium Therapeutics, Inc. stock by corporate insiders — including officers, directors, and shareholders owning more than 10% — sourced from public SEC Form 4 filings.

Question 2

What does insider buying at a company mean?

Accepted Answer

When a corporate officer, director, or major shareholder purchases their own company's stock on the open market using personal funds, it signals confidence in the company's outlook. This is especially meaningful when multiple insiders buy within the same 7–14 day window (cluster buying) or when the purchase size exceeds $100,000.

Question 3

How do I find cluster buying signals for a company?

Accepted Answer

InsiderAct automatically detects cluster buying — two or more insiders independently purchasing shares within a 14-day window. When a cluster buy signal is active for a company, it appears prominently on the company's InsiderAct page and on the Signals tab.

Question 4

Has Atrium Therapeutics, Inc. had any recent large insider purchases?

Accepted Answer

InsiderAct tracks all open-market purchases of $100,000 or more at Atrium Therapeutics, Inc.. Large insider purchases are flagged as high-conviction signals because they represent meaningful personal capital commitments by executives or directors who have direct visibility into the company's operations and prospects.

Question 5

Where do the insider transactions on this page come from?

Accepted Answer

All transactions shown on InsiderAct company pages are sourced directly from SEC EDGAR Form 4 filings — the mandatory public disclosures that corporate insiders must submit within 2 business days of any stock transaction. InsiderAct ingests these filings in near real time and filters for open-market purchases and sales.


2026-09-22	2026-09-18	Younis Husam	CSO	Tax Payment	11,216	$8.95	$100,383
2026-09-22	2026-09-18	Hughes Steven George	CMO	Tax Payment	21,459	$8.95	$192,058
2026-09-22	2026-09-18	Flanagan W. Michael	Director	Tax Payment	22,812	$8.95	$204,167
2026-09-22	2026-09-18	Boyce Sarah	Director	Tax Payment	126,418	$8.95	$1,131,441
2026-09-22	2026-09-18	Kenney Stephanie	See Remarks	Tax Payment	2,375	$8.95	$21,256
2026-09-22	2026-09-18	Gallagher Kathleen P.	See Remarks	Tax Payment	11,632	$8.95	$104,106
2026-09-22	2026-09-18	Winslow Brendan R.	CFO	Tax Payment	6,742	$8.95	$60,341
2026-09-22	2026-09-18	Hoyos Rocio Martin	CSO	Tax Payment	8,320	$8.95	$74,464
2026-04-22	2026-04-20	Kenney Stephanie	See Remarks	Award	30,000	$0.00	$0
2026-04-22	2026-04-20	Hughes Steven George	CMO	Award	30,000	$0.00	$0

RNA

Latest Insider Transactions

Want to see more transactions?