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United States Biotechnology & Medical Research

Altimmune Inc (ALT)

Track

Over the last 90 days, Altimmune Inc. has seen net insider buying totaling $109,949, with three insiders making purchases. Notably, CEO Jerome Durso and CFO Gregory Weaver were among those acquiring shares. This activity occurred against a backdrop of a 30.2% stock price decrease over the same period.
Stock chart
Ticker: ALT Exchange: NMS
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings
Top insiders
Trades
GILL JOHN
1 purchase — total 31,350 USD
Buy 6 Apr 2026
Value US$2,736,291.77 | Price 407.73 | Shares 14,091
Buy 1 Apr 2026
Value US$2,298,479.89 | Price 499.59 | Shares 61,243
Buy 1 Apr 2026
Value US$31,499.00 | Price 3.15 | Shares 10,000
Buy 6 Mar 2026
Value US$17,700.00 | Price 3.54 | Shares 5,000
Buy 6 Mar 2026
Value US$70,790.00 | Price 3.54 | Shares 20,000
Buy 8 Jan 2026
Value US$20,410.00 | Price 4.08 | Shares 5,000
Buy 5 Jan 2026
Value US$2,117.55 | Price 4.24 | Shares 500
Buy 29 Dec 2025
Value US$2,002.60 | Price 3.80 | Shares 527
Buy 23 Dec 2025
Value US$51,250.00 | Price 4.10 | Shares 12,500
Buy 22 Dec 2025
Value US$51,568.75 | Price 4.13 | Shares 12,500
Buy 17 Mar 2025
Value US$5,784.50 | Price 5.78 | Shares 1,000
Buy 13 Mar 2025
Value US$51,996.00 | Price 5.20 | Shares 10,000
Sale 19 Aug 2024
Value US$56,305.92 | Price 6.88 | Shares 8,184
Sale 19 Aug 2024
Value US$54,241.11 | Price 6.93 | Shares 7,827
Buy 15 Aug 2023
Value US$862.50 | Price 2.88 | Shares 300
Buy 24 Mar 2023
Value US$43,140.00 | Price 4.31 | Shares 10,000
Buy 23 Mar 2023
Value US$38,430.00 | Price 4.27 | Shares 9,000
Buy 23 Mar 2023
Value US$42,200.00 | Price 4.22 | Shares 10,000
Planned sale 22 Dec 2022
Value US$300,268.00 | Price 15.01 | Shares 20,000
Planned sale 31 Aug 2022
Value US$400,322.00 | Price 20.02 | Shares 20,000
Sale 12 Aug 2022
Value US$40,710.00 | Price 15.00 | Shares 2,714
Planned sale 12 Aug 2022
Value US$225,889.50 | Price 15.06 | Shares 15,000
Planned sale 5 Jul 2022
Value US$122,184.00 | Price 12.00 | Shares 10,182
Planned sale 1 Jul 2022
Value US$323,784.00 | Price 12.00 | Shares 26,982
Planned sale 27 Jun 2022
Value US$448,253.88 | Price 12.00 | Shares 37,352
Planned sale 27 Jun 2022
Value US$206,943.92 | Price 11.75 | Shares 17,610
Buy 15 Jun 2022
Value US$8,000.00 | Price 8.00 | Shares 1,000
Buy 24 May 2022
Value US$5,400.00 | Price 4.50 | Shares 1,200
Planned sale 28 Feb 2022
Value US$225,600.00 | Price 7.52 | Shares 30,000
Planned sale 1 Mar 2021
Value US$96,480.00 | Price 16.08 | Shares 6,000
Buy 10 Dec 2020
Value US$23,980.00 | Price 11.99 | Shares 2,000
Planned sale 1 Dec 2020
Value US$16,613.58 | Price 13.54 | Shares 1,227
Planned sale 30 Nov 2020
Value US$100,426.00 | Price 11.92 | Shares 8,425
Planned sale 30 Nov 2020
Value US$30,000.00 | Price 12.00 | Shares 2,500
Planned sale 12 Nov 2020
Value US$100,586.50 | Price 9.91 | Shares 10,150
Planned sale 12 Nov 2020
Value US$102,484.80 | Price 9.90 | Shares 10,352
Planned sale 12 Nov 2020
Value US$40,230.30 | Price 10.02 | Shares 4,015
Buy 15 Jun 2020
Value US$11,310,000.00 | Price 7.54 | Shares 1,500,000
Buy 28 May 2020
Value US$1,540,816.57 | Price 8.87 | Shares 173,711
Buy 28 May 2020
Value US$216,273.77 | Price 7.79 | Shares 27,763
Buy 27 May 2020
Value US$2,193,840.00 | Price 7.92 | Shares 277,000
Buy 27 May 2020
Value US$904,921.26 | Price 7.23 | Shares 125,162
Buy 26 May 2020
Value US$3,819,549.66 | Price 9.78 | Shares 390,547
Buy 26 May 2020
Value US$2,720,091.87 | Price 8.79 | Shares 309,453
Sale 15 May 2020
Value US$142,392.30 | Price 4.65 | Shares 30,622
Sale 14 May 2020
Value US$814,708.18 | Price 4.81 | Shares 169,378
Buy 5 Sep 2019
Value US$42,000.00 | Price 2.10 | Shares 20,000
Buy 9 Oct 2018
Value US$9,180.00 | Price 4.59 | Shares 2,000
Buy 25 May 2018
Value US$659.88 | Price 0.51 | Shares 1,300
Buy 29 Dec 2017
Value US$9,962.85 | Price 1.95 | Shares 5,100
Buy 29 Dec 2017
Value US$74,778.08 | Price 1.93 | Shares 38,699
Buy 28 Dec 2017
Value US$112,672.28 | Price 1.92 | Shares 58,711
Buy 27 Dec 2017
Value US$49,039.62 | Price 1.77 | Shares 27,706
Buy 27 Dec 2017
Value US$88,170.00 | Price 1.76 | Shares 50,000
Buy 26 Dec 2017
Value US$93,269.49 | Price 1.81 | Shares 51,442
Buy 22 Dec 2017
Value US$28,877.29 | Price 1.61 | Shares 17,982
Buy 7 Dec 2017
Value US$13,307.90 | Price 1.74 | Shares 7,639
Buy 6 Dec 2017
Value US$28,995.63 | Price 1.80 | Shares 16,106
Buy 5 Dec 2017
Value US$23,987.36 | Price 1.78 | Shares 13,495
Buy 4 Dec 2017
Value US$13,195.48 | Price 1.81 | Shares 7,300
Buy 1 Dec 2017
Value US$9,404.73 | Price 1.80 | Shares 5,215
Buy 30 Nov 2017
Value US$23,815.93 | Price 1.84 | Shares 12,978
Buy 29 Nov 2017
Value US$15,377.30 | Price 1.94 | Shares 7,942
Buy 28 Nov 2017
Value US$24,445.42 | Price 1.97 | Shares 12,395
Buy 27 Nov 2017
Value US$20,059.90 | Price 2.00 | Shares 10,042
Buy 24 Nov 2017
Value US$13,161.57 | Price 2.02 | Shares 6,505
Buy 22 Nov 2017
Value US$11,060.73 | Price 2.10 | Shares 5,261
Buy 21 Nov 2017
Value US$14,905.44 | Price 2.06 | Shares 7,236
Buy 20 Nov 2017
Value US$9,957.60 | Price 2.07 | Shares 4,800
Buy 17 Nov 2017
Value US$13,351.70 | Price 2.12 | Shares 6,295
Buy 25 Aug 2017
Value US$112,390.00 | Price 2.25 | Shares 50,000
Buy 24 Aug 2017
Value US$38,891.67 | Price 2.24 | Shares 17,326
Buy 23 Aug 2017
Value US$11,339.50 | Price 2.27 | Shares 5,000
Buy 23 Aug 2017
Value US$96,349.82 | Price 2.22 | Shares 43,352
Buy 22 Aug 2017
Value US$10,757.50 | Price 2.15 | Shares 5,000
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
1.3
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
1.4
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
1.4
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
1.3
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
2.9
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
1.3
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
1.4
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
2.9
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
2.9
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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