SIGA insider transactions

Director Marshall Joseph W Iii converted options into 24,116 shares and returned $31,762 worth of shares to the company (7,235 units at $4.39), increasing direct ownership by 7% to 246,523 units (SEC Form 4) (withholding tax)

Director Keane John M converted options into 24,116 shares and returned $31,762 worth of shares to the company (7,235 units at $4.39) (SEC Form 4) to satisfy withholding obligation

Director Ford Harold Eugene Jr. converted options into 24,116 shares and returned $31,762 worth of shares to the company (7,235 units at $4.39), increasing direct ownership by 55% to 47,538 units (SEC Form 4) (withholding obligation)

Director Phillips Holly L. converted options into 24,116 shares and returned $31,762 worth of shares to the company (7,235 units at $4.39), increasing direct ownership by 30% to 73,754 units (SEC Form 4) to cover withholding tax

Director Nemirovsky Julian converted options into 24,116 shares and returned $31,762 worth of shares to the company (7,235 units at $4.39), increasing direct ownership by 30% to 73,754 units (SEC Form 4) to satisfy withholding obligation

Director Durnan Jaymie A converted options into 24,116 shares and returned $31,762 worth of shares to the company (7,235 units at $4.39), increasing direct ownership by 23% to 88,754 units (SEC Form 4) (tax liability)

Director Nabel Gary J. converted options into 24,116 shares and returned $31,762 worth of shares to the company (7,235 units at $4.39), increasing direct ownership by 30% to 73,754 units (SEC Form 4) (for tax liability)

SEC Form 4 filed by Miller Larry R.

Executive VP & CFO Luckshire Daniel J converted options into 11,503 shares and covered exercise/tax liability with 6,074 shares, increasing direct ownership by 2% to 280,493 units (SEC Form 4)

EVP & Chief Scientific Officer Hruby Dennis E converted options into 11,445 shares and covered exercise/tax liability with 3,955 shares, increasing direct ownership by 4% to 198,537 units (SEC Form 4)

General Counsel Miller Larry R. covered exercise/tax liability with 11,187 shares and converted options into 21,261 shares, increasing direct ownership by 26% to 48,518 units (SEC Form 4)

Chief Executive Officer Nguyen Diem converted options into 85,045 shares and covered exercise/tax liability with 47,029 shares, increasing direct ownership by 38% to 138,767 units (SEC Form 4)

Chief Executive Officer Nguyen Diem converted options into 55,902 shares and covered exercise/tax liability with 22,804 shares, increasing direct ownership by 49% to 100,751 units (SEC Form 4)

Executive VP & CFO Luckshire Daniel J converted options into 24,193 shares and covered exercise/tax liability with 12,346 shares, increasing direct ownership by 5% to 275,064 units (SEC Form 4)

EVP & Chief Scientific Officer Hruby Dennis E converted options into 32,258 shares and covered exercise/tax liability with 10,467 shares, increasing direct ownership by 13% to 191,047 units (SEC Form 4)

SEC Form 4 filed by Director Keane John M

Director Ford Harold Eugene Jr. converted options into 19,084 shares and returned $35,610 worth of shares to the company (5,725 units at $6.22), increasing direct ownership by 77% to 30,657 units (SEC Form 4)

Director Nemirovsky Julian converted options into 19,084 shares and returned $35,610 worth of shares to the company (5,725 units at $6.22), increasing direct ownership by 31% to 56,873 units (SEC Form 4)

Director Phillips Holly L. converted options into 19,084 shares and returned $35,610 worth of shares to the company (5,725 units at $6.22), increasing direct ownership by 31% to 56,873 units (SEC Form 4)

Director Marshall Joseph W Iii converted options into 19,084 shares and returned $35,610 worth of shares to the company (5,725 units at $6.22), increasing direct ownership by 6% to 229,642 units (SEC Form 4)

Director Durnan Jaymie A converted options into 19,084 shares and returned $35,610 worth of shares to the company (5,725 units at $6.22), increasing direct ownership by 23% to 71,873 units (SEC Form 4)

Director Nabel Gary J. converted options into 19,084 shares and returned $35,610 worth of shares to the company (5,725 units at $6.22), increasing direct ownership by 31% to 56,873 units (SEC Form 4)

General Counsel Miller Larry R. converted options into 6,920 shares and covered exercise/tax liability with 3,532 shares, increasing direct ownership by 10% to 38,444 units (SEC Form 4)

General Counsel Miller Larry R. converted options into 6,920 shares and covered exercise/tax liability with 2,764 shares, increasing direct ownership by 13% to 35,056 units (SEC Form 4)

SEC Form 4 filed by Director Keane John M

SEC Form 3 filed by new insider Keane John M

SEC Form 4 filed by Chief Executive Officer Nguyen Diem

SEC Form 4 filed by Executive VP & CFO Luckshire Daniel J

SEC Form 4 filed by EVP & Chief Scientific Officer Hruby Dennis E

SEC Form 4 filed by General Counsel Miller Larry R.

Chief Executive Officer Nguyen Diem converted options into 55,902 shares and covered exercise/tax liability with 23,644 shares, increasing direct ownership by 91% to 67,653 units (SEC Form 4)

Chief Executive Officer Nguyen Diem converted options into 59,288 shares and covered exercise/tax liability with 23,893 shares (SEC Form 4)

EVP & Chief Scientific Officer Hruby Dennis E converted options into 32,258 shares and covered exercise/tax liability with 10,467 shares, increasing direct ownership by 15% to 169,256 units (SEC Form 4)

Executive VP & CFO Luckshire Daniel J converted options into 24,194 shares and covered exercise/tax liability with 12,347 shares, increasing direct ownership by 5% to 263,217 units (SEC Form 4)

EVP & Chief Medical Officer Varma Jay converted options into 24,712 shares and returned $58,274 worth of shares to the company (7,414 units at $7.86) (SEC Form 4)

Director Phillips Holly L. converted options into 24,712 shares and returned $58,274 worth of shares to the company (7,414 units at $7.86), increasing direct ownership by 66% to 43,514 units (SEC Form 4)

Director Nemirovsky Julian converted options into 24,712 shares and returned $58,274 worth of shares to the company (7,414 units at $7.86), increasing direct ownership by 66% to 43,514 units (SEC Form 4)

Director Nabel Gary J. returned $58,274 worth of shares to the company (7,414 units at $7.86) and converted options into 24,712 shares, increasing direct ownership by 66% to 43,514 units (SEC Form 4)

Director Marshall Joseph W Iii converted options into 24,712 shares and returned $58,274 worth of shares to the company (7,414 units at $7.86), increasing direct ownership by 9% to 216,283 units (SEC Form 4)

Director Knisely Evan A. converted options into 24,712 shares and returned $58,274 worth of shares to the company (7,414 units at $7.86) (SEC Form 4)

Director Ford Harold Eugene Jr. converted options into 24,712 shares and returned $58,274 worth of shares to the company (7,414 units at $7.86) (SEC Form 4)

Director Durnan Jaymie A converted options into 24,712 shares and returned $58,274 worth of shares to the company (7,414 units at $7.86), increasing direct ownership by 42% to 58,514 units (SEC Form 4)

Miller Larry R. was granted 49,940 shares and covered exercise/tax liability with 19,040 shares (SEC Form 4)

SEC Form 3 filed by new insider Miller Larry R.

SEC Form 4 filed by Nguyen Diem

SEC Form 3 filed by new insider Nguyen Diem

SEC Form 4 filed by Nabel Gary J.

SEC Form 4 filed by Durnan Jaymie A

SEC Form 4 filed by Nemirovsky Julian

SEC Form 4 filed by Phillips Holly L.

SEC Form 4 filed by Marshall Joseph W Iii

SEC Form 4 filed by Ford Harold Eugene Jr.

SEC Form 4 filed by Varma Jay

SEC Form 4 filed by Knisely Evan A.

SEC Form 3: New insider Knisely Evan A. claimed ownership of 10,033 shares

SEC Form 4 filed by Luckshire Daniel J

SEC Form 4 filed by Hruby Dennis E

SEC Form 4 filed by Varma Jay

SEC Form 4 filed by Ford Harold Eugene Jr.

SEC Form 3 filed by new insider Varma Jay