EdgarLookup

Spero Therapeutics, Inc. — Insider Transactions

Form 4 filings by directors, officers, and 10%+ shareholders

SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.

Overview All Filings Annual Quarterly Insiders
Insider Title Type Shares Price Value Owns After Date
Rajavelu Esther See Remarks Sale 40,270 $2.37 $95,440 869,450 Nov 7, 2025
Mahadevia Ankit Sale 6,572 $1.97 $12,947 703,294 Aug 28, 2025
Keutzer Timothy Chief Operating Officer Sale 1,695 $1.97 $3,339 739,744 Aug 28, 2025
Mahadevia Ankit Award / Grant 20,000 709,866 Jun 12, 2025
Deshpande Milind Award / Grant 20,000 91,454 Jun 12, 2025
Jackson Scott Thomas Award / Grant 20,000 75,000 Jun 12, 2025
VINK PATRICK V.J.J. Award / Grant 20,000 75,000 Jun 12, 2025
Pottage John C Jr Award / Grant 20,000 75,000 Jun 12, 2025
Smith Cynthia Award / Grant 20,000 75,000 Jun 12, 2025
THOMAS FRANK E Award / Grant 20,000 75,000 Jun 12, 2025
Tregoning Kathleen Award / Grant 20,000 75,000 Jun 12, 2025
Rajavelu Esther See Remarks Award / Grant 185,000 909,720 May 2, 2025
Rajavelu Esther CFO & CBO Award / Grant 266,139 645,409 Feb 5, 2025
Shukla Sath CEO & President Award / Grant 751,407 1,892,216 Feb 5, 2025
Mahadevia Ankit Sale 55,260 $0.78 $43,103 689,866 Feb 5, 2025
Keutzer Timothy Chief Operating Officer Sale 3,974 $0.78 $3,100 794,002 Feb 3, 2025
Rajavelu Esther CFO & CBO Sale 23,351 $1.31 $30,590 396,515 Nov 8, 2024
Mahadevia Ankit Sale 5,912 $1.35 $7,981 759,085 Aug 27, 2024
Keutzer Timothy Chief Operating Officer Sale 2,213 $1.35 $2,988 531,837 Aug 27, 2024
Shukla Sath CEO & President Sale 2,757 $1.35 $3,722 1,140,809 Aug 27, 2024
Shukla Sath CEO and President Sale 17,641 $1.31 $23,110 1,143,566 Aug 2, 2024
Deshpande Milind Award / Grant 20,000 71,454 May 29, 2024
Jackson Scott Thomas Award / Grant 20,000 55,000 May 29, 2024
Mahadevia Ankit Award / Grant 20,000 764,997 May 29, 2024
Tregoning Kathleen Award / Grant 20,000 55,000 May 29, 2024
VINK PATRICK V.J.J. Award / Grant 20,000 55,000 May 29, 2024
Smith Cynthia Award / Grant 20,000 55,000 May 29, 2024
THOMAS FRANK E Award / Grant 20,000 55,000 May 29, 2024
Pottage John C Jr Award / Grant 20,000 55,000 May 29, 2024
Mahadevia Ankit Sale 63,795 $1.37 $87,399 744,997 Feb 2, 2024
Keutzer Timothy Chief Operating Officer Sale 30,971 $1.36 $42,121 534,050 Feb 1, 2024
JOSEPH TAMARA L Chief Legal Officer Sale 30,906 $1.37 $42,341 531,615 Feb 1, 2024
HAMED KAMAL Chief Medical Officer Sale 28,075 $1.37 $38,463 788,117 Feb 1, 2024
Rajavelu Esther See Remarks Award / Grant 119,866 419,866 Feb 1, 2024
Shukla Sath CEO and President Sale 30,901 $1.37 $42,334 1,221,100 Feb 1, 2024
Rajavelu Esther See Remarks Award / Grant 300,000 300,000 Nov 13, 2023
Pottage John C Jr Award / Grant 20,000 35,000 Oct 5, 2023
Smith Cynthia Award / Grant 20,000 35,000 Oct 5, 2023
THOMAS FRANK E Award / Grant 20,000 35,000 Oct 5, 2023
Deshpande Milind Award / Grant 20,000 51,454 Oct 5, 2023
Tregoning Kathleen Award / Grant 20,000 35,000 Oct 5, 2023
VINK PATRICK V.J.J. Award / Grant 20,000 35,000 Oct 5, 2023
Jackson Scott Thomas Award / Grant 20,000 35,000 Oct 5, 2023
Mahadevia Ankit Award / Grant 20,000 808,792 Oct 5, 2023
HAMED KAMAL Chief Medical Officer Sale 39,496 $1.27 $50,160 576,461 Sep 13, 2023
Shukla Sath CEO and President Sale 1,854 $1.26 $2,336 576,663 Aug 29, 2023
Keutzer Timothy Chief Development Officer Sale 1,854 $1.26 $2,336 325,290 Aug 28, 2023
JOSEPH TAMARA L Chief Legal Officer Sale 1,854 $1.26 $2,336 322,790 Aug 28, 2023
Mahadevia Ankit Sale 9,040 $1.26 $11,390 788,792 Aug 28, 2023
Shukla Sath CEO and President Award / Grant 266,000 578,517 Aug 1, 2023