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SEC EDGAR · Forms 3/4/5Updated through Oct 30, 2026•57 filings

ALT

Altimmune, Inc.

Net purchases of $44.3K over the last 3 months

1 buyer account for the net balance. There is no cluster of three distinct buyers within 30 days. We found 5 CEO/CFO purchases over 12 months.

How to read this signal

Only open-market P purchases and S sales count toward the signal. Vesting, options, taxes and gifts remain in the source data but do not trigger alerts. Rule 10b5-1 trades are shown as informational.

JSON example

3-month balance

+$44,250

1 buyers · 0 sellers

12-month purchases

$370,038

6 distinct insiders

12-month sales

$0.00

0 distinct insiders

Highlighted alerts

11

0 Rule 10b5-1 trades treated as informational

Buying cluster · 30 days

Fewer than three distinct buyers

CEO/CFO purchases · 12 months

5 executive purchases found

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Form 4 raw → Raspberry

The value is in what we do not call a signal.

The SEC XML stores every transaction. Raspberry keeps that evidence, reads the footnotes and separates voluntary open-market activity from vesting, option exercises, gifts, tax withholding, stock purchase and dividend reinvestment plans and pre-programmed 10b5-1 trades.

93
Raw transactions
Everything returned by the filing
11
Voluntary view
P/S trades after deterministic checks
82
Administrative noise
Stored, never alerted
0
10b5-1
Shown as informational
SEC ownership XML facts
Code
A
Shares
36,234
Price
$0.00
Footnotes
3

The shares underlying the option become vested and exercisable over four (4) years with 25% of the shares vesting on October 1, 2027, with the remainder vesting in equal monthly installments for the following thirty-six (36) months, subject to the reporting person's continued service on each applicable vesting date. 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, 2027, 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 dat.

Raspberry interpretation
Informational — no alert

Reason: administrative_code.

Verify in SEC EDGAR

Recent transactions

Voluntary purchases and sales; administrative noise stays hidden.

11 transactions

Durso Jerome Benedict

President and CEO

PurchaseAlert
Shares
15,000
Price
$2.95
Value
$44,250
Open SEC filing

GILL JOHN

Director

PurchaseAlert
Shares
9,200
Price
$3.41
Value
$31,350
Open SEC filing

Durso Jerome Benedict

President and CEO

PurchaseAlert
Shares
15,000
Price
$3.14
Value
$47,100
Open SEC filing

WEAVER GREGORY L

Chief Financial Officer

PurchaseAlert
Shares
10,000
Price
$3.15
Value
$31,499
Open SEC filing

Durso Jerome Benedict

President and CEO

PurchaseAlert
Shares
20,000
Price
$3.54
Value
$70,790
Open SEC filing

WEAVER GREGORY L

Chief Financial Officer

PurchaseAlert
Shares
5,000
Price
$3.54
Value
$17,700
Open SEC filing

Pisano Wayne

Director

PurchaseAlert
Shares
5,000
Price
$4.08
Value
$20,410
Open SEC filing

Sohn Catherine A.

Director

PurchaseAlert
Shares
500
Price
$4.24
Value
$2,118
Open SEC filing

Jorkasky Diane

Director

PurchaseAlert
Shares
527
Price
$3.80
Value
$2,003
Open SEC filing

GILL JOHN

Director

PurchaseAlert
Shares
12,500
Price
$4.10
Value
$51,250
Open SEC filing

Durso Jerome Benedict

Director

PurchaseAlert
Shares
12,500
Price
$4.13
Value
$51,569
Open SEC filing

“Alert” means a voluntary, unscheduled transaction according to the filing; it is not an investment recommendation. Official source: SEC EDGAR.