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Altimmune, Inc.

ALT Net buying
CIK 0001326190 #2997 in the set updated 18 Sep 2026
Bought (120 mo)
$24.33M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$8.33M
$0.00 on a plan · $1.80M straight out of an exercise
Sold at will
$6.52M
15 of 24 sales
Net
+$16.00M
+$17.81M against sales at will

By person

29 insiders · 138 transactions
Insider
Role
Bought
Sold
Net
Holding
Worth
Change
Venrock Healthcare Capital Partners III, L.P. entity
10% owner
$22.71M (7)
—
+$22.71M
3,500,000
$10.33M
+106.3%
PRESCOTT GROUP CAPITAL MANAGEMENT, L.L.C. entity
10% owner
—
$4.41M (3)
−$4.41M
6,626,403
$19.55M
−17.0%
Roberts M Scot
Chief Scientific Officer
$1.98K (1)
$959.77K (4) scheduled
−$957.78K
113,714
$335.46K
—
VELOCITY PHARMACEUTICAL HOLDINGS LLC entity
10% owner
—
$957.10K (2)
−$957.10K
1,687,250
$4.98M
−10.6%
SCHAFFER DERACE L
Director
$943.38K (25)
—
+$943.38K
601,846
$1.78M
—
Garg Vipin K
Director
$42.00K (1)
$626.21K (2)
−$584.21K
424,519
$1.25M
—
Pisano Wayne
Director
$29.59K (2)
$402.75K (2) scheduled
−$373.16K
13,498
$39.82K
—
Harris Matthew Scott
Chief Medical Officer
$42.20K (1)
$265.83K (2) scheduled
−$223.63K
16,087
$47.46K
—
Durso Jerome Benedict
President and CEO
$213.71K (4)
—
+$213.71K
62,500
$184.38K
—
Jorkasky Diane
Director
$2.00K (1)
$206.94K (1) scheduled
−$204.94K
527
$1.55K
—
Hodges Philip
Director
—
$143.09K (3)
−$143.09K
26,579
$78.41K
—
WEAVER GREGORY L
Chief Financial Officer
$101.20K (3)
—
+$101.20K
39,831
$117.50K
—
Schafer Klaus
Director
$23.98K (1)
$100.59K (1)
−$76.61K
9,179
$27.08K
—
GILL JOHN
Director
$86.94K (3)
$141.14K (2)
−$54.19K
21,700
$64.02K
—
Eisenstadt Richard I
Chief Financial Officer
$43.14K (1)
—
+$43.14K
45,012
$132.79K
—
Drutz David
Director
$74.79K (6)
$110.55K (2) scheduled
−$35.76K
76,008
$224.22K
—
SAYARE MITCHEL
Director
$9.96K (1)
—
+$9.96K
59,013
$174.09K
—
Sohn Catherine A.
Director
$7.90K (2)
—
+$7.90K
1,500
$4.43K
—
Enright William
President and CEO
$659.88 (1)
—
+$659.88
365,839
$1.08M
+1,306,468%
Novartis Bioventures Ltd entity
10% owner
—
—
—
8,345,145
$24.62M
+346.9%
RICHMAN ERIC I
Director
—
—
—
908,055
$2.68M
+386.1%
St Peter Steven
Director
—
—
—
205,004
$604.76K
+51.9%
Runge Jeffrey W.
Director
—
—
—
197,700
$583.22K
+25.4%
MACNEILL PHILIP
VP, CFO, Treasurer, Secretary
—
—
—
126,346
$372.72K
+152.7%
Truffle Capital S.A.S. entity
10% owner
—
—
—
76,700
$226.27K
—
Jordt Raymond M
Chief Business Officer
—
—
—
70,107
$206.82K
+778,867%
Brown William Michael
Chief Financial Officer
—
—
—
17,721
$52.28K
—
Richardson Linda M
Chief Commercial Officer
—
—
—
17,174
$50.66K
—
Shutterly Andrew
Acting Chief Financial Officer
—
—
—
11,372
$33.55K
+12.4%

No percentages here. This company's share count has moved by a factor of 2.7 over the window, from 71,124,625 to 194,517,701 shares. A split, a merger or a large issue changes what the company is, and a holding measured at one point in that run is not a fraction of it at another.

Individual transactions

138
Insider
Date
Role
Action
Shares
Price
Amount
Durso Jerome Benedict
13 Aug 2026
President and CEO
Buy
15,000
$2.95
$44.25K
GILL JOHN
6 Apr 2026
Director
Buy
9,200
$3.41
$31.35K
Durso Jerome Benedict
1 Apr 2026
President and CEO
Buy
15,000
$3.14
$47.10K
WEAVER GREGORY L
1 Apr 2026
Chief Financial Officer
Buy
10,000
$3.15
$31.50K
Durso Jerome Benedict
6 Mar 2026
President and CEO
Buy
20,000
$3.54
$70.79K
WEAVER GREGORY L
6 Mar 2026
Chief Financial Officer
Buy
5,000
$3.54
$17.70K
Pisano Wayne
8 Jan 2026
Director
Buy
5,000
$4.08
$20.41K
Sohn Catherine A.
5 Jan 2026
Director
Buy
500
$4.24
$2.12K
Jorkasky Diane
29 Dec 2025
Director
Buy
527
$3.80
$2.00K
GILL JOHN
23 Dec 2025
Director
Buy
12,500
$4.10
$51.25K
Durso Jerome Benedict
22 Dec 2025
Director
Buy
12,500
$4.13
$51.57K
Sohn Catherine A.
17 Mar 2025
Director
Buy
1,000
$5.78
$5.78K
WEAVER GREGORY L
13 Mar 2025
Chief Financial Officer
Buy
10,000
$5.20
$52.00K
Drutz David
19 Aug 2024
Director
Sold after exercise indirect
8,184
$6.88
$56.31K
Drutz David
19 Aug 2024
Director
Sold after exercise indirect
7,827
$6.93
$54.24K
Drutz David
15 Aug 2023
Director
Buy indirect
300
$2.88
$862.50
Eisenstadt Richard I
24 Mar 2023
Chief Financial Officer
Buy
10,000
$4.31
$43.14K
Harris Matthew Scott
23 Mar 2023
Chief Medical Officer
Buy
10,000
$4.22
$42.20K
Drutz David
23 Mar 2023
Director
Buy indirect
9,000
$4.27
$38.43K
Pisano Wayne
22 Dec 2022
Director
Sold after exercise
20,000
$15.01
$300.27K
Drutz David
18 Nov 2022
Director
Exercised, kept
139
$2.40
$333.60
Garg Vipin K
31 Aug 2022
President and CEO
Sell
20,000
$20.02
$400.32K
Garg Vipin K
12 Aug 2022
President and CEO
Sell
15,000
$15.06
$225.89K
GILL JOHN
12 Aug 2022
Director
Sell
2,714
$15.00
$40.71K
Roberts M Scot
5 Jul 2022
Chief Scientific Officer
Sold after exercise
10,182
$12.00
$122.18K
Roberts M Scot
1 Jul 2022
Chief Scientific Officer
Sold after exercise
26,982
$12.00
$323.78K
Roberts M Scot
29 Jun 2022
Chief Scientific Officer
Sold after exercise
5,462
$12.00
$65.55K
Jorkasky Diane
27 Jun 2022
Director
Sold after exercise
17,610
$11.75
$206.94K
Roberts M Scot
27 Jun 2022
Chief Scientific Officer
Sold after exercise
37,352
$12.00
$448.25K
Schafer Klaus
20 Jun 2022
Director
Exercised, kept
60
$2.40
$144.00
Schafer Klaus
20 Jun 2022
Director
Exercised, kept
159
$2.40
$381.60
Schafer Klaus
20 Jun 2022
Director
Exercised, kept
60
$2.40
$144.00
Drutz David
15 Jun 2022
Director
Buy
1,000
$8.00
$8.00K
Drutz David
24 May 2022
Director
Buy
1,200
$4.50
$5.40K
Harris Matthew Scott
28 Feb 2022
Chief Medical Officer
Sold after exercise
30,000
$7.52
$225.60K
Drutz David
25 Jan 2022
Director
Exercised, kept
70
$2.40
$168.00
Drutz David
14 Dec 2021
Director
Exercised, kept
139
$2.40
$333.60
Drutz David
19 Nov 2021
Director
Exercised, kept
70
$2.40
$168.00
Hodges Philip
1 Mar 2021
Director
Sell
6,000
$16.08
$96.48K
Schafer Klaus
10 Dec 2020
Director
Buy
2,000
$11.99
$23.98K
Hodges Philip
1 Dec 2020
Director
Sell indirect
1,227
$13.54
$16.61K
GILL JOHN
30 Nov 2020
Director
Sell
8,425
$11.92
$100.43K
Hodges Philip
30 Nov 2020
Director
Sell
2,500
$12.00
$30.00K
Drutz David
13 Nov 2020
Director
Exercised, kept
60
$2.40
$144.00
Harris Matthew Scott
12 Nov 2020
Director
Sell
4,015
$10.02
$40.23K
Pisano Wayne
12 Nov 2020
Director
Sell
10,352
$9.90
$102.48K
Schafer Klaus
12 Nov 2020
Director
Sell
10,150
$9.91
$100.59K
Venrock Healthcare Capital Partners III, L.P.
15 Jun 2020
10% owner
Buy indirect
1,500,000
$7.54
$11.31M
Venrock Healthcare Capital Partners III, L.P.
28 May 2020
10% owner
Buy indirect
173,711
$8.87
$1.54M
Venrock Healthcare Capital Partners III, L.P.
28 May 2020
10% owner
Buy indirect
27,763
$7.79
$216.27K
Venrock Healthcare Capital Partners III, L.P.
27 May 2020
10% owner
Buy indirect
277,000
$7.92
$2.19M
Venrock Healthcare Capital Partners III, L.P.
27 May 2020
10% owner
Buy indirect
125,162
$7.23
$904.92K
Venrock Healthcare Capital Partners III, L.P.
26 May 2020
10% owner
Buy indirect
390,547
$9.78
$3.82M
Venrock Healthcare Capital Partners III, L.P.
26 May 2020
10% owner
Buy indirect
309,453
$8.79
$2.72M
VELOCITY PHARMACEUTICAL HOLDINGS LLC
15 May 2020
10% owner
Sell
30,622
$4.65
$142.39K
VELOCITY PHARMACEUTICAL HOLDINGS LLC
14 May 2020
10% owner
Sell
169,378
$4.81
$814.71K
Garg Vipin K
5 Sep 2019
President and CEO
Buy
20,000
$2.10
$42.00K
Pisano Wayne
9 Oct 2018
Director
Buy
2,000
$4.59
$9.18K
Enright William
25 May 2018
President and CEO
Buy
1,300
$0.51
$659.88
Roberts M Scot
21 May 2018
Chief Scientific Officer
Exercised, kept
55,120
$0.08
$4.41K
Enright William
2 Jan 2018
President and CEO
Exercised, kept
183,347
$0.08
$14.67K
SCHAFFER DERACE L
29 Dec 2017
Director
Buy
38,699
$1.93
$74.78K
SAYARE MITCHEL
29 Dec 2017
Director
Buy indirect
5,100
$1.95
$9.96K
SCHAFFER DERACE L
28 Dec 2017
Director
Buy
58,711
$1.92
$112.67K
SCHAFFER DERACE L
27 Dec 2017
Director
Buy
27,706
$1.77
$49.04K
SCHAFFER DERACE L
27 Dec 2017
Director
Buy
50,000
$1.76
$88.17K
SCHAFFER DERACE L
26 Dec 2017
Director
Buy
51,442
$1.81
$93.27K
SCHAFFER DERACE L
22 Dec 2017
Director
Buy
17,982
$1.61
$28.88K
SCHAFFER DERACE L
7 Dec 2017
Director
Buy
7,639
$1.74
$13.31K
SCHAFFER DERACE L
6 Dec 2017
Director
Buy
16,106
$1.80
$29.00K
SCHAFFER DERACE L
5 Dec 2017
Director
Buy
13,495
$1.78
$23.99K
SCHAFFER DERACE L
4 Dec 2017
Director
Buy
7,300
$1.81
$13.20K
SCHAFFER DERACE L
1 Dec 2017
Director
Buy
5,215
$1.80
$9.40K
SCHAFFER DERACE L
30 Nov 2017
Director
Buy
12,978
$1.84
$23.82K
SCHAFFER DERACE L
29 Nov 2017
Director
Buy
7,942
$1.94
$15.38K
SCHAFFER DERACE L
28 Nov 2017
Director
Buy
12,395
$1.97
$24.45K
SCHAFFER DERACE L
27 Nov 2017
Director
Buy
10,042
$2.00
$20.06K
SCHAFFER DERACE L
24 Nov 2017
Director
Buy
6,505
$2.02
$13.16K
SCHAFFER DERACE L
22 Nov 2017
Director
Buy
5,261
$2.10
$11.06K
SCHAFFER DERACE L
21 Nov 2017
Director
Buy
7,236
$2.06
$14.91K
SCHAFFER DERACE L
20 Nov 2017
Director
Buy
4,800
$2.07
$9.96K
SCHAFFER DERACE L
17 Nov 2017
Director
Buy
6,295
$2.12
$13.35K
SCHAFFER DERACE L
25 Aug 2017
Director
Buy
50,000
$2.25
$112.39K
SCHAFFER DERACE L
24 Aug 2017
Director
Buy
17,326
$2.24
$38.89K
SCHAFFER DERACE L
23 Aug 2017
Director
Buy
43,352
$2.22
$96.35K
Drutz David
23 Aug 2017
Director
Buy
5,000
$2.27
$11.34K
SCHAFFER DERACE L
22 Aug 2017
Director
Buy
5,958
$2.10
$12.52K
Drutz David
22 Aug 2017
Director
Buy
5,000
$2.15
$10.76K
SCHAFFER DERACE L
21 Aug 2017
Director
Buy
690
$2.02
$1.39K
Enright William
16 Aug 2017
President and CEO
Exercised, kept
91,733
$0.08
$7.34K
Enright William
16 Aug 2017
President and CEO
Exercised, kept
71,644
$0.08
$5.73K
Roberts M Scot
6 Jun 2017
Chief Scientific Officer
Buy indirect
449
$4.42
$1.98K
GILL JOHN
2 Jun 2017
Director
Buy
1,000
$4.34
$4.34K
Runge Jeffrey W.
20 Jan 2017
Director
Exercised, kept
20,000
$3.11
$62.20K
SCHAFFER DERACE L
13 Jan 2017
Director
Exercised, kept
20,000
$2.20
$44.00K
St Peter Steven
4 Jan 2017
Director
Exercised, kept
20,000
$2.20
$44.00K
St Peter Steven
4 Jan 2017
Director
Exercised, kept
20,000
$3.11
$62.20K
St Peter Steven
4 Jan 2017
Director
Exercised, kept
20,000
$2.47
$49.40K
St Peter Steven
4 Jan 2017
Director
Exercised, kept
10,000
$2.59
$25.90K
MACNEILL PHILIP
21 Dec 2016
VP, CFO, Treasurer, Secretary
Exercised, kept
17,657
$1.66
$29.31K
MACNEILL PHILIP
21 Dec 2016
VP, CFO, Treasurer, Secretary
Exercised, kept
5,000
$1.71
$8.55K
PRESCOTT GROUP CAPITAL MANAGEMENT, L.L.C.
9 Dec 2016
10% owner
Sell indirect
436,324
$3.26
$1.42M
PRESCOTT GROUP CAPITAL MANAGEMENT, L.L.C.
8 Dec 2016
10% owner
Sell indirect
440,479
$3.25
$1.43M
PRESCOTT GROUP CAPITAL MANAGEMENT, L.L.C.
7 Dec 2016
10% owner
Sell indirect
477,829
$3.26
$1.56M
Runge Jeffrey W.
28 Nov 2016
Director
Exercised, kept
20,000
$2.20
$44.00K
RICHMAN ERIC I
22 Nov 2016
Director
Exercised, kept
20,000
$2.20
$44.00K
RICHMAN ERIC I
22 Nov 2016
Director
Exercised, kept
20,000
$1.69
$33.80K
RICHMAN ERIC I
22 Nov 2016
Director
Exercised, kept
135,660
$1.71
$231.98K
RICHMAN ERIC I
22 Nov 2016
Director
Exercised, kept
240,000
$1.94
$465.60K
RICHMAN ERIC I
22 Nov 2016
Director
Exercised, kept
37,500
$1.19
$44.63K
RICHMAN ERIC I
22 Nov 2016
Director
Exercised, kept
30,573
$2.46
$75.21K
SAYARE MITCHEL
22 Nov 2016
Director
Exercised, kept
20,000
$2.20
$44.00K
SAYARE MITCHEL
22 Nov 2016
Director
Exercised, kept
20,000
$1.69
$33.80K
SAYARE MITCHEL
22 Nov 2016
Director
Exercised, kept
18,361
$1.81
$33.23K
SAYARE MITCHEL
22 Nov 2016
Director
Exercised, kept
20,000
$1.51
$30.20K
SAYARE MITCHEL
22 Nov 2016
Director
Exercised, kept
20,000
$1.64
$32.80K
SAYARE MITCHEL
22 Nov 2016
Director
Exercised, kept
20,000
$1.45
$29.00K
SAYARE MITCHEL
22 Nov 2016
Director
Exercised, kept
52,139
$2.67
$139.21K
SAYARE MITCHEL
22 Nov 2016
Director
Exercised, kept
60,000
$2.67
$160.20K
SAYARE MITCHEL
22 Nov 2016
Director
Exercised, kept
20,000
$1.60
$32.00K
SAYARE MITCHEL
22 Nov 2016
Director
Exercised, kept
20,000
$1.52
$30.40K
GILL JOHN
22 Nov 2016
President and CEO
Exercised, kept
100,000
$2.20
$220.00K
SCHAFFER DERACE L
30 Sep 2016
Director
Exercised, kept
20,000
$1.69
$33.80K
SCHAFFER DERACE L
30 Sep 2016
Director
Exercised, kept
20,000
$1.51
$30.20K
SCHAFFER DERACE L
30 Sep 2016
Director
Exercised, kept
20,000
$1.64
$32.80K
SCHAFFER DERACE L
30 Sep 2016
Director
Exercised, kept
20,000
$1.45
$29.00K
SCHAFFER DERACE L
30 Sep 2016
Director
Exercised, kept
20,000
$1.60
$32.00K
SCHAFFER DERACE L
30 Sep 2016
Director
Exercised, kept
20,000
$2.47
$49.40K
SCHAFFER DERACE L
30 Sep 2016
Director
Exercised, kept
10,000
$2.59
$25.90K
RICHMAN ERIC I
28 Sep 2016
Director
Exercised, kept
37,500
$1.19
$44.63K
RICHMAN ERIC I
28 Sep 2016
Director
Exercised, kept
100,000
$1.48
$148.00K
RICHMAN ERIC I
28 Sep 2016
Director
Exercised, kept
100,000
$1.51
$151.00K
MACNEILL PHILIP
20 Sep 2016
VP, CFO, Treasurer, Secretary
Exercised, kept
17,656
$1.66
$29.31K
MACNEILL PHILIP
20 Sep 2016
VP, CFO, Treasurer, Secretary
Exercised, kept
10,000
$1.71
$17.10K
MACNEILL PHILIP
20 Sep 2016
VP, CFO, Treasurer, Secretary
Exercised, kept
14,063
$1.94
$27.28K
MACNEILL PHILIP
20 Sep 2016
VP, CFO, Treasurer, Secretary
Exercised, kept
5,625
$1.13
$6.36K
MACNEILL PHILIP
20 Sep 2016
VP, CFO, Treasurer, Secretary
Exercised, kept
1,845
$1.21
$2.23K
MACNEILL PHILIP
20 Sep 2016
VP, CFO, Treasurer, Secretary
Exercised, kept
4,500
$1.21
$5.45K

What was left out

Form 4 filings counted 336
Amendments (4/A) skipped 1
Filings about a different issuer 0
Unreadable filings 0
Joint filings 19
Sales on a Rule 10b5-1 plan 0
Sales straight out of an exercise 9
Sales at will 15
Transactions with no price 0
Shares from compensation/vesting 14,058,024
Sales filed before the plan box existed 14
History held since 19 Sep 2016