StockCIK 1326190

Altimmune, Inc. (ALT): Insider Trades and Fund Holdings

In the past 12 months, Altimmune, Inc. insiders reported 1 open-market purchase worth $44K and 0 sales worth $0.

1Insider buys, 12 months

$44KBought by insiders, 12 months

$0Sold by insiders, 12 months

2Tracked funds holding

Recent insider trades

Open-market purchases (code P) and sales (code S) from Form 4. Grants, option exercises and gifts are not shown. Latest filing: Aug 13, 2026.

Recent ALT insider trades
Filed	Traded	Insider	Role	Type	Shares	Price ($)	Value	Holding	Filing
Aug 13	Aug 13	Jerome Benedict DursoCEO	CEO	▲ BUY	15,000	2.95	$44K	+32%	Form 4 ↗

Source: SEC Form 4 filings, retrieved Oct 28, 2026. How we read filings

Insiders who traded in the past year

Insider	Role	Buys	Bought	Sells	Sold	Latest
Jerome Benedict Durso	CEO	1	$44K	0	$0	Aug 13, 2026

Tracked funds that report ALT

From each fund's latest 13F. Holdings are as of quarter end and are filed up to 45 days later.

Fund	Quarter	Shares	Value	% of portfolio	Change
Viking Global Investors	Q2 2026	6,700,000	$20.4M	0.06%	▲ New
Renaissance Technologies	Q2 2026	71,600	$218K	0.00%	▲ New

Source: SEC Form 13F-HR filings, retrieved Oct 28, 2026. How we read filings

Reading these numbers

Insiders sell for many reasons: taxes, diversification, a house. Purchases with their own money are rarer and are usually read as more informative. A Form 4 is due within two business days of the trade. How to read a Form 4 →