United States Biotechnology & Medical Research

Altimmune Inc (ALT)

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Altimmune Inc. has seen no insider trading activity in the last three months. The most recent transactions occurred in April 2026, when several executives, including the CEO and CFO, executed multiple buy orders. Prior to this period, the company experienced a consistent pattern of insider buying throughout early 2026.
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.

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Top insiders
Trades
Buy 6 Apr 2026
Value US$2,736,291.77 | Price 407.73 | Shares 14,091 (+47.9%)
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-04-06 2026-04-06 B Purchase
2.5
GILL JOHN
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
1.7
Durso Jerome Benedict

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
1.5
WEAVER GREGORY L

Chief Financial Officer

Officer
88,835 +21.3%
177.42
US$4,397,355 		88,835 +21.3% 177.42 US$4,397,355
2026-03-09 2026-03-06 B Purchase
1.5
WEAVER GREGORY L

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
1.7
Durso Jerome Benedict

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
3.0
Pisano Wayne
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
3.2
Sohn Catherine A.
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
1.5
Jorkasky Diane
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
2.5
GILL JOHN
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
1.7
Durso Jerome Benedict
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
3.2
Sohn Catherine A.
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
1.5
WEAVER GREGORY L

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
3.0
Drutz David
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
3.0
Drutz David
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
3.0
Drutz David
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
1.7
Eisenstadt Richard I

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
3.0
Drutz David
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
1.7
Harris Matthew Scott

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
3.0
Pisano Wayne
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
1.4
Garg Vipin K

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
2.5
GILL JOHN
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
1.4
Garg Vipin K

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
Roberts M Scot

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
Roberts M Scot

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
Roberts M Scot

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
1.5
Jorkasky Diane
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
3.0
Drutz David
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
3.0
Drutz David
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
1.7
Harris Matthew Scott

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
Hodges Philip
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
3.1
Schafer Klaus
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
Hodges Philip
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
2.5
GILL JOHN
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
Hodges Philip
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
3.1
Schafer Klaus
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
3.0
Pisano Wayne
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
1.7
Harris Matthew Scott
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
3.8
Venrock Healthcare Capital Partners III, L.P.
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
3.8
Venrock Healthcare Capital Partners III, L.P.
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
3.8
Venrock Healthcare Capital Partners III, L.P.
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
3.8
Venrock Healthcare Capital Partners III, L.P.
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
3.8
Venrock Healthcare Capital Partners III, L.P.
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
3.8
Venrock Healthcare Capital Partners III, L.P.
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
3.8
Venrock Healthcare Capital Partners III, L.P.
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
0.8
VELOCITY PHARMACEUTICAL HOLDINGS LLC
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
0.8
VELOCITY PHARMACEUTICAL HOLDINGS LLC
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
1.4
Garg Vipin K

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
2017-08-24 2017-08-22 B Purchase Drutz David
5,000 +24.1%
2.15
US$10,758 		5,000 +24.1% 2.15 US$10,758
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