Altimmune Inc (ALT)

Altimmune Inc. recorded one insider trading transaction over the past ninety days. CEO Jerome Benedict Durso purchased shares valued at $44,250 on August 13, 2026. This acquisition followed the company's latest earnings report, which showed a twenty percent beat on earnings per share estimates. The stock price has risen 10.6% during this period.
Ticker: ALT Exchange: NMS


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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
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Insider trades have triggered activity signals for Altimmune Inc. Upgrade to see score, net flow, insiders and the full signal context.

Top insiders
Trades
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
1.9
Durso Jerome Benedict President and CEO Executive Director
Transaction date
Purchase
Price
170.57
Quantity 27,835 -45.5%
Value US$1,566,566
2.5
GILL JOHN Non-Executive Director
Transaction date
Purchase
Price
407.73
Quantity 14,091 +47.9%
Value US$2,736,292
1.9
Durso Jerome Benedict President and CEO Executive Director
Transaction date
Purchase
Price
499.59
Quantity 61,243 -44.5%
Value US$2,298,480
1.5
WEAVER GREGORY L Chief Financial Officer Officer
Transaction date
Purchase
Price
3.15
Quantity 10,000 +35.6%
Value US$31,499
1.5
WEAVER GREGORY L Chief Financial Officer Officer
Transaction date
Purchase
Price
3.54
Quantity 5,000 +21.7%
Value US$17,700
1.9
Durso Jerome Benedict President and CEO Executive Director
Transaction date
Purchase
Price
3.54
Quantity 20,000 +160.0%
Value US$70,790
2.9
Pisano Wayne Non-Executive Director
Transaction date
Purchase
Price
4.08
Quantity 5,000 +58.8%
Value US$20,410
3.2
Sohn Catherine A. Non-Executive Director
Transaction date
Purchase
Price
4.24
Quantity 500 +50.0%
Value US$2,118
1.5
Jorkasky Diane Non-Executive Director
Transaction date
Purchase
Price
3.80
Quantity 527 +inf%
Value US$2,003
2.5
GILL JOHN Non-Executive Director
Transaction date
Purchase
Price
4.10
Quantity 12,500 +inf%
Value US$51,250
1.9
Durso Jerome Benedict Non-Executive Director
Transaction date
Purchase
Price
4.13
Quantity 12,500 +inf%
Value US$51,569
3.2
Sohn Catherine A. Non-Executive Director
Transaction date
Purchase
Price
5.78
Quantity 1,000 +inf%
Value US$5,784
1.5
WEAVER GREGORY L Chief Financial Officer Officer
Transaction date
Purchase
Price
5.20
Quantity 10,000 +inf%
Value US$51,996
3.0
Drutz David Non-Executive Director
Transaction date
Sale
Price
6.88
Quantity 8,184 -12.8%
Value US$56,306
3.0
Drutz David Non-Executive Director
Transaction date
Sale
Price
6.93
Quantity 7,827 -15.7%
Value US$54,241
3.0
Drutz David Non-Executive Director
Transaction date
Purchase
Price
2.88
Quantity 300 +1.0%
Value US$862
1.7
Eisenstadt Richard I Chief Financial Officer Officer
Transaction date
Purchase
Price
4.31
Quantity 10,000 +83.3%
Value US$43,140
3.0
Drutz David Non-Executive Director
Transaction date
Purchase
Price
4.27
Quantity 9,000 +43.9%
Value US$38,430
1.7
Harris Matthew Scott Chief Medical Officer Officer
Transaction date
Purchase
Price
4.22
Quantity 10,000 +42.9%
Value US$42,200
2.9
Pisano Wayne Non-Executive Director
Transaction date
Planned sale
Price
15.01
Quantity 20,000 -70.2%
Value US$300,268
1.4
Garg Vipin K President and CEO Executive Director
Transaction date
Planned sale
Price
20.02
Quantity 20,000 -7.8%
Value US$400,322
2.5
GILL JOHN Non-Executive Director
Transaction date
Sale
Price
15.00
Quantity 2,714 -49.5%
Value US$40,710
1.4
Garg Vipin K President and CEO Executive Director
Transaction date
Planned sale
Price
15.06
Quantity 15,000 -5.5%
Value US$225,890
Roberts M Scot Chief Scientific Officer Officer
Transaction date
Planned sale
Price
12.00
Quantity 10,182 -55.1%
Value US$122,184
Roberts M Scot Chief Scientific Officer Officer
Transaction date
Planned sale
Price
12.00
Quantity 26,982 -60.4%
Value US$323,784
Roberts M Scot Chief Scientific Officer Officer
Transaction date
Planned sale
Price
12.00
Quantity 37,352 -67.8%
Value US$448,254
1.5
Jorkasky Diane Non-Executive Director
Transaction date
Planned sale
Price
11.75
Quantity 17,610 -100.0%
Value US$206,944
3.0
Drutz David Non-Executive Director
Transaction date
Purchase
Price
8.00
Quantity 1,000 +5.3%
Value US$8,000
3.0
Drutz David Non-Executive Director
Transaction date
Purchase
Price
4.50
Quantity 1,200 +6.7%
Value US$5,400
1.7
Harris Matthew Scott Chief Medical Officer Officer
Transaction date
Planned sale
Price
7.52
Quantity 30,000 -72.2%
Value US$225,600
Hodges Philip Non-Executive Director
Transaction date
Planned sale
Price
16.08
Quantity 6,000 -40.7%
Value US$96,480
3.1
Schafer Klaus Non-Executive Director
Transaction date
Purchase
Price
11.99
Quantity 2,000 +29.0%
Value US$23,980
Hodges Philip Non-Executive Director
Transaction date
Planned sale
Price
13.54
Quantity 1,227 -100.0%
Value US$16,614
2.5
GILL JOHN Non-Executive Director
Transaction date
Planned sale
Price
11.92
Quantity 8,425 -42.9%
Value US$100,426
Hodges Philip Non-Executive Director
Transaction date
Planned sale
Price
12.00
Quantity 2,500 -14.5%
Value US$30,000
3.1
Schafer Klaus Non-Executive Director
Transaction date
Planned sale
Price
9.91
Quantity 10,150 -59.5%
Value US$100,586
2.9
Pisano Wayne Non-Executive Director
Transaction date
Planned sale
Price
9.90
Quantity 10,352 -54.9%
Value US$102,485
1.7
Harris Matthew Scott Non-Executive Director
Transaction date
Planned sale
Price
10.02
Quantity 4,015 -49.7%
Value US$40,230
1.4
Garg Vipin K President and CEO Executive Director
Transaction date
Purchase
Price
2.10
Quantity 20,000 +6.2%
Value US$42,000
Pisano Wayne Non-Executive Director
Transaction date
Purchase
Price
4.59
Quantity 2,000 +inf%
Value US$9,180
Enright William President and CEO Executive Director
Transaction date
Purchase
Price
0.51
Quantity 1,300 +0.4%
Value US$660
SAYARE MITCHEL Non-Executive Director
Transaction date
Purchase
Price
1.95
Quantity 5,100 +18.5%
Value US$9,963
SCHAFFER DERACE L Non-Executive Director
Transaction date
Purchase
Price
1.93
Quantity 38,699 +7.0%
Value US$74,778
SCHAFFER DERACE L Non-Executive Director
Transaction date
Purchase
Price
1.92
Quantity 58,711 +11.9%
Value US$112,672
SCHAFFER DERACE L
Transaction date
Purchase
Price
1.77
Quantity 27,706 +6.0%
Value US$49,040
SCHAFFER DERACE L
Transaction date
Purchase
Price
1.76
Quantity 50,000 +12.1%
Value US$88,170
SCHAFFER DERACE L
Transaction date
Purchase
Price
1.81
Quantity 51,442 +14.2%
Value US$93,269
SCHAFFER DERACE L
Transaction date
Purchase
Price
1.61
Quantity 17,982 +5.2%
Value US$28,877
SCHAFFER DERACE L
Transaction date
Purchase
Price
1.74
Quantity 7,639 +2.3%
Value US$13,308
SCHAFFER DERACE L
Transaction date
Purchase
Price
1.80
Quantity 16,106 +5.0%
Value US$28,996
SCHAFFER DERACE L
Transaction date
Purchase
Price
1.78
Quantity 13,495 +4.4%
Value US$23,987
SCHAFFER DERACE L
Transaction date
Purchase
Price
1.81
Quantity 7,300 +2.4%
Value US$13,195
SCHAFFER DERACE L
Transaction date
Purchase
Price
1.80
Quantity 5,215 +1.8%
Value US$9,405
SCHAFFER DERACE L
Transaction date
Purchase
Price
1.84
Quantity 12,978 +4.6%
Value US$23,816
SCHAFFER DERACE L
Transaction date
Purchase
Price
1.94
Quantity 7,942 +2.9%
Value US$15,377
SCHAFFER DERACE L
Transaction date
Purchase
Price
1.97
Quantity 12,395 +4.7%
Value US$24,445
SCHAFFER DERACE L
Transaction date
Purchase
Price
2.00
Quantity 10,042 +4.0%
Value US$20,060
SCHAFFER DERACE L
Transaction date
Purchase
Price
2.02
Quantity 6,505 +2.7%
Value US$13,162
SCHAFFER DERACE L
Transaction date
Purchase
Price
2.10
Quantity 5,261 +2.2%
Value US$11,061
SCHAFFER DERACE L
Transaction date
Purchase
Price
2.06
Quantity 7,236 +3.1%
Value US$14,905
SCHAFFER DERACE L
Transaction date
Purchase
Price
2.07
Quantity 4,800 +2.1%
Value US$9,958
SCHAFFER DERACE L
Transaction date
Purchase
Price
2.12
Quantity 6,295 +2.8%
Value US$13,352
SCHAFFER DERACE L
Transaction date
Purchase
Price
2.25
Quantity 50,000 +29.1%
Value US$112,390
SCHAFFER DERACE L
Transaction date
Purchase
Price
2.24
Quantity 17,326 +11.2%
Value US$38,892
Drutz David
Transaction date
Purchase
Price
2.27
Quantity 5,000 +19.4%
Value US$11,340
SCHAFFER DERACE L
Transaction date
Purchase
Price
2.22
Quantity 43,352 +39.0%
Value US$96,350
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value
Number of shares Price Value Details
2026-08-13 2026-08-13 B Purchase

President and CEO

Executive Director
27,835 -45.5%
170.57
US$1,566,566
27,835 -45.5% 170.57 US$1,566,566
2026-04-06 2026-04-06 B Purchase Non-Executive Director
14,091 +47.9%
407.73
US$2,736,292
14,091 +47.9% 407.73 US$2,736,292
2026-04-01 2026-04-01 B Purchase

President and CEO

Executive Director
61,243 -44.5%
499.59
US$2,298,480
61,243 -44.5% 499.59 US$2,298,480
2026-04-01 2026-04-01 B Purchase

Chief Financial Officer

Officer
10,000 +35.6%
3.15
US$31,499
10,000 +35.6% 3.15 US$31,499
2026-03-09 2026-03-06 B Purchase

Chief Financial Officer

Officer
5,000 +21.7%
3.54
US$17,700
5,000 +21.7% 3.54 US$17,700
2026-03-09 2026-03-06 B Purchase

President and CEO

Executive Director
20,000 +160.0%
3.54
US$70,790
20,000 +160.0% 3.54 US$70,790
2026-01-09 2026-01-08 B Purchase Non-Executive Director
5,000 +58.8%
4.08
US$20,410
5,000 +58.8% 4.08 US$20,410
2026-01-05 2026-01-05 B Purchase Non-Executive Director
500 +50.0%
4.24
US$2,118
500 +50.0% 4.24 US$2,118
2025-12-29 2025-12-29 B Purchase Non-Executive Director
527 +inf%
3.80
US$2,003
527 +inf% 3.80 US$2,003
2025-12-23 2025-12-23 B Purchase Non-Executive Director
12,500 +inf%
4.10
US$51,250
12,500 +inf% 4.10 US$51,250
2025-12-22 2025-12-22 B Purchase Non-Executive Director
12,500 +inf%
4.13
US$51,569
12,500 +inf% 4.13 US$51,569
2025-03-18 2025-03-17 B Purchase Non-Executive Director
1,000 +inf%
5.78
US$5,784
1,000 +inf% 5.78 US$5,784
2025-03-14 2025-03-13 B Purchase

Chief Financial Officer

Officer
10,000 +inf%
5.20
US$51,996
10,000 +inf% 5.20 US$51,996
2024-08-20 2024-08-19 S Sale Non-Executive Director
8,184 -12.8%
6.88
US$56,306
8,184 -12.8% 6.88 US$56,306
2024-08-20 2024-08-19 S Sale Non-Executive Director
7,827 -15.7%
6.93
US$54,241
7,827 -15.7% 6.93 US$54,241
2023-08-15 2023-08-15 B Purchase Non-Executive Director
300 +1.0%
2.88
US$862
300 +1.0% 2.88 US$862
2023-03-24 2023-03-24 B Purchase

Chief Financial Officer

Officer
10,000 +83.3%
4.31
US$43,140
10,000 +83.3% 4.31 US$43,140
2023-03-27 2023-03-23 B Purchase Non-Executive Director
9,000 +43.9%
4.27
US$38,430
9,000 +43.9% 4.27 US$38,430
2023-03-23 2023-03-23 B Purchase

Chief Medical Officer

Officer
10,000 +42.9%
4.22
US$42,200
10,000 +42.9% 4.22 US$42,200
2022-12-22 2022-12-22 PlS Planned sale Non-Executive Director
20,000 -70.2%
15.01
US$300,268
20,000 -70.2% 15.01 US$300,268
2022-09-01 2022-08-31 PlS Planned sale

President and CEO

Executive Director
20,000 -7.8%
20.02
US$400,322
20,000 -7.8% 20.02 US$400,322
2023-07-06 2022-08-12 S Sale Non-Executive Director
2,714 -49.5%
15.00
US$40,710
2,714 -49.5% 15.00 US$40,710
2022-08-12 2022-08-12 PlS Planned sale

President and CEO

Executive Director
15,000 -5.5%
15.06
US$225,890
15,000 -5.5% 15.06 US$225,890
2022-07-05 2022-07-05 PlS Planned sale

Chief Scientific Officer

Officer
10,182 -55.1%
12.00
US$122,184
10,182 -55.1% 12.00 US$122,184
2022-07-05 2022-07-01 PlS Planned sale

Chief Scientific Officer

Officer
26,982 -60.4%
12.00
US$323,784
26,982 -60.4% 12.00 US$323,784
2022-06-28 2022-06-27 PlS Planned sale

Chief Scientific Officer

Officer
37,352 -67.8%
12.00
US$448,254
37,352 -67.8% 12.00 US$448,254
2022-06-28 2022-06-27 PlS Planned sale Non-Executive Director
17,610 -100.0%
11.75
US$206,944
17,610 -100.0% 11.75 US$206,944
2022-06-16 2022-06-15 B Purchase Non-Executive Director
1,000 +5.3%
8.00
US$8,000
1,000 +5.3% 8.00 US$8,000
2022-05-25 2022-05-24 B Purchase Non-Executive Director
1,200 +6.7%
4.50
US$5,400
1,200 +6.7% 4.50 US$5,400
2022-03-02 2022-02-28 PlS Planned sale

Chief Medical Officer

Officer
30,000 -72.2%
7.52
US$225,600
30,000 -72.2% 7.52 US$225,600
2021-03-01 2021-03-01 PlS Planned sale Non-Executive Director
6,000 -40.7%
16.08
US$96,480
6,000 -40.7% 16.08 US$96,480
2020-12-11 2020-12-10 B Purchase Non-Executive Director
2,000 +29.0%
11.99
US$23,980
2,000 +29.0% 11.99 US$23,980
2020-12-02 2020-12-01 PlS Planned sale Non-Executive Director
1,227 -100.0%
13.54
US$16,614
1,227 -100.0% 13.54 US$16,614
2020-12-02 2020-11-30 PlS Planned sale Non-Executive Director
8,425 -42.9%
11.92
US$100,426
8,425 -42.9% 11.92 US$100,426
2020-12-02 2020-11-30 PlS Planned sale Non-Executive Director
2,500 -14.5%
12.00
US$30,000
2,500 -14.5% 12.00 US$30,000
2020-11-13 2020-11-12 PlS Planned sale Non-Executive Director
10,150 -59.5%
9.91
US$100,586
10,150 -59.5% 9.91 US$100,586
2020-11-13 2020-11-12 PlS Planned sale Non-Executive Director
10,352 -54.9%
9.90
US$102,485
10,352 -54.9% 9.90 US$102,485
2020-11-13 2020-11-12 PlS Planned sale Non-Executive Director
4,015 -49.7%
10.02
US$40,230
4,015 -49.7% 10.02 US$40,230
2020-06-15 2020-06-15 B Purchase Large shareholder
1,500,000 +50.0%
7.54
US$11,310,000
1,500,000 +50.0% 7.54 US$11,310,000
2020-05-28 2020-05-28 B Purchase Large shareholder
173,711 +6.1%
8.87
US$1,540,817
173,711 +6.1% 8.87 US$1,540,817
2020-05-28 2020-05-28 B Purchase Large shareholder
27,763 +1.0%
7.79
US$216,274
27,763 +1.0% 7.79 US$216,274
2020-05-28 2020-05-27 B Purchase Large shareholder
277,000 +11.0%
7.92
US$2,193,840
277,000 +11.0% 7.92 US$2,193,840
2020-05-28 2020-05-27 B Purchase Large shareholder
125,162 +5.2%
7.23
US$904,921
125,162 +5.2% 7.23 US$904,921
2020-05-28 2020-05-26 B Purchase Large shareholder
390,547 +19.5%
9.78
US$3,819,550
390,547 +19.5% 9.78 US$3,819,550
2020-05-28 2020-05-26 B Purchase Large shareholder
309,453 +18.2%
8.79
US$2,720,092
309,453 +18.2% 8.79 US$2,720,092
2020-05-18 2020-05-15 S Sale Large shareholder
30,622 -1.8%
4.65
US$142,392
30,622 -1.8% 4.65 US$142,392
2020-05-18 2020-05-14 S Sale Large shareholder
169,378 -9.0%
4.81
US$814,708
169,378 -9.0% 4.81 US$814,708
2019-09-05 2019-09-05 B Purchase

President and CEO

Executive Director
20,000 +6.2%
2.10
US$42,000
20,000 +6.2% 2.10 US$42,000
2018-10-11 2018-10-09 B Purchase Pisano Wayne Non-Executive Director
2,000 +inf%
4.59
US$9,180
2,000 +inf% 4.59 US$9,180
2018-05-29 2018-05-25 B Purchase Enright William

President and CEO

Executive Director
1,300 +0.4%
0.51
US$660
1,300 +0.4% 0.51 US$660
2018-01-03 2017-12-29 B Purchase SAYARE MITCHEL Non-Executive Director
5,100 +18.5%
1.95
US$9,963
5,100 +18.5% 1.95 US$9,963
2018-01-02 2017-12-29 B Purchase SCHAFFER DERACE L Non-Executive Director
38,699 +7.0%
1.93
US$74,778
38,699 +7.0% 1.93 US$74,778
2018-01-02 2017-12-28 B Purchase SCHAFFER DERACE L Non-Executive Director
58,711 +11.9%
1.92
US$112,672
58,711 +11.9% 1.92 US$112,672
2017-12-27 2017-12-27 B Purchase SCHAFFER DERACE L
27,706 +6.0%
1.77
US$49,040
27,706 +6.0% 1.77 US$49,040
2017-12-27 2017-12-27 B Purchase SCHAFFER DERACE L
50,000 +12.1%
1.76
US$88,170
50,000 +12.1% 1.76 US$88,170
2017-12-27 2017-12-26 B Purchase SCHAFFER DERACE L
51,442 +14.2%
1.81
US$93,269
51,442 +14.2% 1.81 US$93,269
2017-12-27 2017-12-22 B Purchase SCHAFFER DERACE L
17,982 +5.2%
1.61
US$28,877
17,982 +5.2% 1.61 US$28,877
2017-12-08 2017-12-07 B Purchase SCHAFFER DERACE L
7,639 +2.3%
1.74
US$13,308
7,639 +2.3% 1.74 US$13,308
2017-12-08 2017-12-06 B Purchase SCHAFFER DERACE L
16,106 +5.0%
1.80
US$28,996
16,106 +5.0% 1.80 US$28,996
2017-12-05 2017-12-05 B Purchase SCHAFFER DERACE L
13,495 +4.4%
1.78
US$23,987
13,495 +4.4% 1.78 US$23,987
2017-12-05 2017-12-04 B Purchase SCHAFFER DERACE L
7,300 +2.4%
1.81
US$13,195
7,300 +2.4% 1.81 US$13,195
2017-12-05 2017-12-01 B Purchase SCHAFFER DERACE L
5,215 +1.8%
1.80
US$9,405
5,215 +1.8% 1.80 US$9,405
2017-11-30 2017-11-30 B Purchase SCHAFFER DERACE L
12,978 +4.6%
1.84
US$23,816
12,978 +4.6% 1.84 US$23,816
2017-11-30 2017-11-29 B Purchase SCHAFFER DERACE L
7,942 +2.9%
1.94
US$15,377
7,942 +2.9% 1.94 US$15,377
2017-11-30 2017-11-28 B Purchase SCHAFFER DERACE L
12,395 +4.7%
1.97
US$24,445
12,395 +4.7% 1.97 US$24,445
2017-11-27 2017-11-27 B Purchase SCHAFFER DERACE L
10,042 +4.0%
2.00
US$20,060
10,042 +4.0% 2.00 US$20,060
2017-11-27 2017-11-24 B Purchase SCHAFFER DERACE L
6,505 +2.7%
2.02
US$13,162
6,505 +2.7% 2.02 US$13,162
2017-11-27 2017-11-22 B Purchase SCHAFFER DERACE L
5,261 +2.2%
2.10
US$11,061
5,261 +2.2% 2.10 US$11,061
2017-11-21 2017-11-21 B Purchase SCHAFFER DERACE L
7,236 +3.1%
2.06
US$14,905
7,236 +3.1% 2.06 US$14,905
2017-11-21 2017-11-20 B Purchase SCHAFFER DERACE L
4,800 +2.1%
2.07
US$9,958
4,800 +2.1% 2.07 US$9,958
2017-11-21 2017-11-17 B Purchase SCHAFFER DERACE L
6,295 +2.8%
2.12
US$13,352
6,295 +2.8% 2.12 US$13,352
2017-08-28 2017-08-25 B Purchase SCHAFFER DERACE L
50,000 +29.1%
2.25
US$112,390
50,000 +29.1% 2.25 US$112,390
2017-08-28 2017-08-24 B Purchase SCHAFFER DERACE L
17,326 +11.2%
2.24
US$38,892
17,326 +11.2% 2.24 US$38,892
2017-08-24 2017-08-23 B Purchase Drutz David
5,000 +19.4%
2.27
US$11,340
5,000 +19.4% 2.27 US$11,340
2017-08-23 2017-08-23 B Purchase SCHAFFER DERACE L
43,352 +39.0%
2.22
US$96,350
43,352 +39.0% 2.22 US$96,350