InsiderSource
COAG

Hemab Therapeutics Holdings, Inc.

SEC CIK 2114044
$26.94 −20.8% · 90 days
90-day buys
$53.77M
14 open-market
90-day sells
$0
0 open-market
Net insider flow
+$53.77M
Net buying
Filings shown
20
Most recent
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At a glance

Over the last 90 days, insiders at COAG have bought a net $53.77M of stock (14 open-market buys vs 0 sells).

Largest recent trade: Ra Capital Management, L.p., COAG's 10% owner, spent $45.74M of their own money on 2.54M shares at $18, growing their stake 70%.

Most active filer: Ra Capital Management, L.p., with 17 transactions among the recent filings shown.

Insider transaction history

Form 4 filings for COAG, newest first
View on SEC EDGAR ↗
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COAG
Hemab Therapeutics Holdings, Inc.
Buy RA CAPITAL MANAGEMENT, L.P. · Director, 10% Owner · Open-market purchase · filed May 6, 2026 ΔOwn +0.9%

Ra Capital Management, L.p., COAG's 10% owner, spent $1.33M of their own money on 53,407 shares at $25, growing their stake 1%.

+$1.33M
53,407 sh @ $25
COAG
Hemab Therapeutics Holdings, Inc.
Buy RA CAPITAL MANAGEMENT, L.P. · Director, 10% Owner · Open-market purchase · filed May 6, 2026 ΔOwn +1.4%

Ra Capital Management, L.p., COAG's 10% owner, spent $2.14M of their own money on 87,143 shares at $25, growing their stake 1%.

+$2.14M
87,143 sh @ $25
COAG
Hemab Therapeutics Holdings, Inc.
Buy RA CAPITAL MANAGEMENT, L.P. · Director, 10% Owner · Open-market purchase · filed May 6, 2026 ΔOwn +70%

Ra Capital Management, L.p., COAG's 10% owner, spent $45.74M of their own money on 2.54M shares at $18, growing their stake 70%.

+$45.74M
2.54M sh @ $18
COAG
Hemab Therapeutics Holdings, Inc.
Buy RA CAPITAL MANAGEMENT, L.P. · Director, 10% Owner · Open-market purchase · filed May 6, 2026 ΔOwn +60%

Ra Capital Management, L.p., COAG's 10% owner, spent $2.41M of their own money on 133,750 shares at $18, growing their stake 60%.

+$2.41M
133,750 sh @ $18
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About COAG insider activity

This page tracks every recent Form 4 filed for Hemab Therapeutics Holdings, Inc. with the U.S. Securities and Exchange Commission. Form 4 is the disclosure that company insiders — officers, directors, and holders of more than 10% of the stock — must file within two business days of buying or selling shares.

The summary above nets open-market purchases against open-market sales over the trailing 90 days. Open-market trades (codes P and S) tend to carry the most signal because they reflect a deliberate choice to put money in or take it out, as opposed to routine grants, option exercises, or tax-withholding events. Use the badges on each row to tell them apart, and always confirm details against the original filing before drawing conclusions.

Frequently asked questions

How often is COAG insider data updated?

Continuously. We read from SEC EDGAR, so new Form 4 filings for Hemab Therapeutics Holdings, Inc. usually appear here within minutes of being accepted by the SEC.

What does "net insider flow" mean?

It is the total dollar value of open-market insider purchases minus open-market sales over the last 90 days. A positive number (green) means insiders bought more than they sold; a negative number (red) means the reverse.

Why do some rows show grants or option exercises instead of buys?

Insiders receive stock through compensation as well as buying it outright. Form 4 captures all of these. We label each transaction by its SEC code so you can focus on open-market activity if you prefer.

Is this investment advice?

No. InsiderSource presents public filing data for informational purposes only. Insider activity is one of many factors to consider and is never a recommendation to buy or sell.