Question 1

Who are the insiders buying Penumbra Inc stock?

Accepted Answer

InsiderAct tracks all open-market purchases of Penumbra 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 Penumbra Inc had any recent large insider purchases?

Accepted Answer

InsiderAct tracks all open-market purchases of $100,000 or more at Penumbra 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.


2026-05-21	2026-05-19	Elsesser Adam	CEO	Gift	77,000	$0.00	$0
2026-04-07	2026-04-02	Grewal Harpreet	Director	Sale	100	$328.22	$32,822
2026-03-17	2026-03-15	Narayan Shruthi	President	Tax Payment	117	$336.18	$39,333
2026-03-17	2026-03-15	Roberts Johanna	EVP	Tax Payment	186	$336.18	$62,529
2026-03-17	2026-03-15	Yuen Maggie	CFO	Tax Payment	186	$336.18	$62,529
2026-03-17	2026-03-15	Shiu Lambert	CAO	Tax Payment	150	$336.18	$50,427
2026-03-05	2026-03-02	Yuen Maggie	CFO	Sale	2,432	$342.30	$832,474
2026-02-19	2026-02-17	Roberts Johanna	EVP	Award	2,630	$0.00	$0
2026-02-19	2026-02-17	Yuen Maggie	CFO	Award	2,630	$0.00	$0
2026-02-19	2026-02-17	Shiu Lambert	CAO	Award	2,300	$0.00	$0

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