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Derivative exercise or conversion — not an open-market buy.
Written from the filing's own figures. OQRO describes what was reported and never tells you what to buy or sell.
View the official recordSEC Form 4 — Statement of Changes in Beneficial OwnershipAll the details
Dates, kept separate
Transaction date
Oct 1, 2026
Reporting period
Not applicable
Filed with the SEC
Oct 6, 2026
OfficerOption exercise
Context
Classification
option exercise
Code M — exercise or conversion of a derivative security
Planned / mechanical clue
Footnote references vesting of compensation awards
Only flagged when a footnote says so; never inferred
Source receipt
Record ID
0001802615-26-000002
Filed / recorded
Oct 6, 2026, 12:10 AM UTC
Added to OQRO
Oct 7, 2026, 1:51 PM UTC
Parser
form4-xml-v2
Data quality
Verified: identifiers matched exactly
Issuer
Altimmune, Inc.
Issuer CIK
1326190
Ticker
ALT
Reporting person
Christophe Arbet-engels
Relationship
Officer
Officer title
Chief Medical Officer
Security
Restricted Stock Units
Table
Derivative (Table II)
Transaction date
Oct 1, 2026
Transaction code
M
Shares / units
37,500
Price per share
$0.00
Acquired / disposed
Disposed (D)
Shares owned after
112,500
Ownership form
Direct
Amendment
No
Footnotes from the filing
Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock, par value $0.0001, when vested.
The RSUs become vested over four (4) years with 25% of the shares vesting on October 1, 2026, with the remainder vesting in equal annual installments for the following three (3) years, subject to the reporting person's continued service through the applicable vesting date, and have no expiration date.
Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.
