Insider trading

Period: 120 months Stock: ALT Type of trade: Bought × + Add filter Clear all

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When Periodin use

Who Role

The trade Type of tradein use Minimum amount Plan Share of their own holding

Ownership What the chief executive holds

When

Period

How far back the list reaches. Filings arrive days after the trade, so the newest rows always lag a little.

1 month 12 months 120 months

56 decisions over 120 months

Who

Role

The position the person holds at the company, read from the title on the filing. A chief executive who is also a director counts as the chief executive.

Anyone CEO CFO Other officers Directors 10% owners

56 decisions over 120 months

The trade

Type of trade

Purchases, sales, or cluster buys: companies where 3 or more insiders bought within 30 days. The number beside each is what that choice would give.

Any79 Buys56 Sells23 Cluster buys

56 decisions over 120 months Remove this filter

The trade

Minimum amount

Hides rows under this value. The amount is the shares traded times the price on the filing.

Any $100K or more $1M or more $10M or more $100M or more $500M or more

56 decisions over 120 months

The trade

Plan

Discretionary: they chose to sell that week.
Scheduled: a 10b5-1 plan fixed the sale months in advance, so the timing says nothing about what they knew.
Not stated: filed before the SEC added the box in April 2023, which is most of the older half of this database.

Any Discretionary Scheduled (10b5-1) Not stated Not on a plan

56 decisions over 120 months

The trade

Share of their own holding

How much of what they already held the trade moved. Selling a tenth of a stake is not the same act as selling all of it.

56 decisions over 120 months

Ownership

What the chief executive holds

The value of the chief executive’s stock measured against base salary. The salary comes from the company’s own proxy. Companies with no figure are in neither direction.

56 decisions over 120 months

Stock

Insider

Type ?

Of own stake ↓

Why it stands out

ALT Altimmune, Inc.

13 Aug 2026

Durso Jerome Benedict President and CEO

Bought

$44.25K 15,000 at 2.95

31.6%

+32% of stake

ALT Altimmune, Inc.

6 Apr 2026

GILL JOHN Director

Bought

$31.35K 9,200 at 3.41

73.6%

+74% of stake

ALT Altimmune, Inc.

1 Apr 2026

Durso Jerome Benedict President and CEO

Bought

$47.10K 15,000 at 3.14

46.2%

+46% of stake

ALT Altimmune, Inc.

1 Apr 2026

WEAVER GREGORY L Chief Financial Officer

Bought

$31.50K 10,000 at 3.15

35.6%

+36% of stake

ALT Altimmune, Inc.

6 Mar 2026

Durso Jerome Benedict President and CEO

Bought

$70.79K 20,000 at 3.54

160%

Largest buy in 3 yrs

ALT Altimmune, Inc.

6 Mar 2026

WEAVER GREGORY L Chief Financial Officer

Bought

$17.70K 5,000 at 3.54

21.7%

+22% of stake

ALT Altimmune, Inc.

8 Jan 2026

Pisano Wayne Director

Bought

$20.41K 5,000 at 4.08

58.8%

First buy on file

ALT Altimmune, Inc.

5 Jan 2026

Sohn Catherine A. Director

Bought

$2.12K 500 at 4.24

50.0%

+50% of stake

ALT Altimmune, Inc.

29 Dec 2025

Jorkasky Diane Director

Bought

$2.00K 527 at 3.80

opened

First buy on file

ALT Altimmune, Inc.

23 Dec 2025

GILL JOHN Director

Bought

$51.25K 12,500 at 4.10

opened

First buy on file

ALT Altimmune, Inc.

22 Dec 2025

Durso Jerome Benedict Director

Bought

$51.57K 12,500 at 4.13

opened

First buy on file

ALT Altimmune, Inc.

17 Mar 2025

Sohn Catherine A. Director

Bought

$5.78K 1,000 at 5.78

opened

First buy on file

ALT Altimmune, Inc.

13 Mar 2025

WEAVER GREGORY L Chief Financial Officer

Bought

$52.00K 10,000 at 5.20

opened

First buy on file

ALT Altimmune, Inc.

15 Aug 2023

Drutz David Director · indirect

Bought

$862.50 300 at 2.88

1.0%

ALT Altimmune, Inc.

24 Mar 2023

Eisenstadt Richard I Chief Financial Officer

Bought

$43.14K 10,000 at 4.31

83.3%

First buy on file

ALT Altimmune, Inc.

23 Mar 2023

Harris Matthew Scott Chief Medical Officer

Bought

$42.20K 10,000 at 4.22

42.9%

First buy on file

ALT Altimmune, Inc.

23 Mar 2023

Drutz David Director · indirect

Bought

$38.43K 9,000 at 4.27

43.9%

Largest buy in 3 yrs

ALT Altimmune, Inc.

15 Jun 2022

Drutz David Director

Bought

$8.00K 1,000 at 8.00

5.3%

Largest buy in 3 yrs

ALT Altimmune, Inc.

24 May 2022

Drutz David Director

Bought

$5.40K 1,200 at 4.50

6.7%

First buy on file

ALT Altimmune, Inc.

10 Dec 2020

Schafer Klaus Director

Bought

$23.98K 2,000 at 11.99

29.0%

First buy on file

ALT Altimmune, Inc.

15 Jun 2020

Venrock Healthcare Capital Partners III, L.P. 10% owner · indirect

Bought

$11.31M 1,500,000 at 7.54

50.0%

First buy on file

ALT Altimmune, Inc.

28 May 2020

Venrock Healthcare Capital Partners III, L.P. 10% owner · indirect

Bought 2×

$1.76M 201,474 at 8.72

7.2%

First buy on file

ALT Altimmune, Inc.

27 May 2020

Venrock Healthcare Capital Partners III, L.P. 10% owner · indirect

Bought 2×

$3.10M 402,162 at 7.71

16.8%

First buy on file

ALT Altimmune, Inc.

26 May 2020

Venrock Healthcare Capital Partners III, L.P. 10% owner · indirect

Bought 2×

$6.54M 700,000 at 9.34

41.3%

First buy on file

ALT Altimmune, Inc.

5 Sep 2019

Garg Vipin K President and CEO

Bought

$42.00K 20,000 at 2.10

6.2%

First buy on file

ALT Altimmune, Inc.

9 Oct 2018

Pisano Wayne Director

Bought

$9.18K 2,000 at 4.59

opened

First buy on file

ALT Altimmune, Inc.

25 May 2018

Enright William President and CEO

Bought

$659.88 1,300 at 0.51

0.4%

First buy on file

ALT Altimmune, Inc.

29 Dec 2017

SCHAFFER DERACE L Director

Bought

$74.78K 38,699 at 1.93

7.0%

First buy on file

ALT Altimmune, Inc.

29 Dec 2017

SAYARE MITCHEL Director · indirect

Bought

$9.96K 5,100 at 1.95

18.5%

First buy on file

ALT Altimmune, Inc.

28 Dec 2017

SCHAFFER DERACE L Director

Bought

$112.67K 58,711 at 1.92

11.9%

First buy on file

ALT Altimmune, Inc.

27 Dec 2017

SCHAFFER DERACE L Director

Bought 2×

$137.21K 77,706 at 1.77

18.8%

First buy on file

ALT Altimmune, Inc.

26 Dec 2017

SCHAFFER DERACE L Director

Bought

$93.27K 51,442 at 1.81

14.2%

First buy on file

ALT Altimmune, Inc.

22 Dec 2017

SCHAFFER DERACE L Director

Bought

$28.88K 17,982 at 1.61

5.2%

First buy on file

ALT Altimmune, Inc.

7 Dec 2017

SCHAFFER DERACE L Director

Bought

$13.31K 7,639 at 1.74

2.3%

First buy on file

ALT Altimmune, Inc.

6 Dec 2017

SCHAFFER DERACE L Director

Bought

$29.00K 16,106 at 1.80

5.0%

First buy on file

ALT Altimmune, Inc.

5 Dec 2017

SCHAFFER DERACE L Director

Bought

$23.99K 13,495 at 1.78

4.4%

First buy on file

ALT Altimmune, Inc.

4 Dec 2017

SCHAFFER DERACE L Director

Bought

$13.20K 7,300 at 1.81

2.4%

First buy on file

ALT Altimmune, Inc.

1 Dec 2017

SCHAFFER DERACE L Director

Bought

$9.40K 5,215 at 1.80

1.8%

First buy on file

ALT Altimmune, Inc.

30 Nov 2017

SCHAFFER DERACE L Director

Bought

$23.82K 12,978 at 1.84

4.6%

First buy on file

ALT Altimmune, Inc.

29 Nov 2017

SCHAFFER DERACE L Director

Bought

$15.38K 7,942 at 1.94

2.9%

First buy on file

ALT Altimmune, Inc.

28 Nov 2017

SCHAFFER DERACE L Director

Bought

$24.45K 12,395 at 1.97

4.7%

First buy on file

ALT Altimmune, Inc.

27 Nov 2017

SCHAFFER DERACE L Director

Bought

$20.06K 10,042 at 2.00

4.0%

First buy on file

ALT Altimmune, Inc.

24 Nov 2017

SCHAFFER DERACE L Director

Bought

$13.16K 6,505 at 2.02

2.7%

First buy on file

ALT Altimmune, Inc.

22 Nov 2017

SCHAFFER DERACE L Director

Bought

$11.06K 5,261 at 2.10

2.2%

First buy on file

ALT Altimmune, Inc.

21 Nov 2017

SCHAFFER DERACE L Director

Bought

$14.91K 7,236 at 2.06

3.1%

First buy on file

ALT Altimmune, Inc.

20 Nov 2017

SCHAFFER DERACE L Director

Bought

$9.96K 4,800 at 2.07

2.1%

First buy on file

ALT Altimmune, Inc.

17 Nov 2017

SCHAFFER DERACE L Director

Bought

$13.35K 6,295 at 2.12

2.8%

First buy on file

ALT Altimmune, Inc.

25 Aug 2017

SCHAFFER DERACE L Director

Bought

$112.39K 50,000 at 2.25

29.1%

First buy on file

ALT Altimmune, Inc.

24 Aug 2017

SCHAFFER DERACE L Director

Bought

$38.89K 17,326 at 2.24

11.2%

First buy on file

ALT Altimmune, Inc.

23 Aug 2017

SCHAFFER DERACE L Director

Bought

$96.35K 43,352 at 2.22

39.0%

First buy on file

Showing 1–50 of 56.