InsiderClue
Stocks · Health care · Pharmaceutical Preparations

Spero Therapeutics, Inc.

SPRO Clue Score50
United States Fiscal year ends December CIK 0001701108 Results filed 12 Aug 2026
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What the insiders did Net buying

Individual transactions

53
Insider
Date
Role
Action
Shares
Price
Amount
Esther Rajavelu
4 May 2026
See Remarks
Sell
25,240
$2.51
$63.35K
Timothy Keutzer
6 Feb 2026
Chief Operating Officer
Sell
18,652
$2.36
$44.02K
Esther Rajavelu
6 Feb 2026
See Remarks
Sell
50,816
$2.36
$119.93K
Esther Rajavelu
6 Feb 2026
See Remarks
Sell
37,101
$2.36
$87.56K
Timothy Keutzer
4 Feb 2026
Chief Operating Officer
Sell
3,471
$2.24
$7.78K
Timothy Keutzer
3 Feb 2026
Chief Operating Officer
Sell
24,224
$2.14
$51.84K
Esther Rajavelu
2 Feb 2026
See Remarks
Sell
18,442
$2.20
$40.57K
Timothy Keutzer
2 Feb 2026
Chief Operating Officer
Sell
18,891
$2.20
$41.56K
Esther Rajavelu
7 Nov 2025
See Remarks
Sell
40,270
$2.37
$95.44K
Timothy Keutzer
28 Aug 2025
Chief Operating Officer
Sell
1,695
$1.97
$3.34K
Ankit Mahadevia
28 Aug 2025
Director
Sell
6,572
$1.97
$12.95K
Ankit Mahadevia
5 Feb 2025
Director
Sell
55,260
$0.78
$43.10K
Ankit Mahadevia
5 Feb 2025
Director
Sell
13,959
$0.78
$10.89K
Sath Shukla
5 Feb 2025
CEO & President
Sell
106,408
$0.78
$83.00K
Sath Shukla
5 Feb 2025
CEO & President
Sell
42,786
$0.78
$33.37K
Sath Shukla
5 Feb 2025
CEO & President
Sell
6,139
$0.78
$4.79K
Esther Rajavelu
5 Feb 2025
CFO & Cbo
Sell
20,689
$0.78
$16.14K
Timothy Keutzer
5 Feb 2025
Chief Operating Officer
Sell
24,920
$0.78
$19.44K
Timothy Keutzer
5 Feb 2025
Chief Operating Officer
Sell
27,643
$0.78
$21.56K
Timothy Keutzer
5 Feb 2025
Chief Operating Officer
Sell
3,974
$0.78
$3.10K
Esther Rajavelu
8 Nov 2024
CFO & Cbo
Sell
17,245
$1.30
$22.42K
Esther Rajavelu
7 Nov 2024
CFO & Cbo
Sell
23,351
$1.31
$30.59K
Sath Shukla
27 Aug 2024
CEO & President
Sell
2,757
$1.35
$3.72K
Timothy Keutzer
27 Aug 2024
Chief Operating Officer
Sell
2,213
$1.35
$2.99K
Ankit Mahadevia
27 Aug 2024
Director
Sell
5,912
$1.35
$7.98K
Sath Shukla
5 Aug 2024
CEO and President
Sell
17,641
$1.31
$23.11K
Sath Shukla
2 Aug 2024
CEO and President
Sell
14,800
$1.32
$19.54K
Kamal Hamed
2 Feb 2024
Chief Medical Officer
Sell
28,075
$1.37
$38.46K
Tamara L Joseph
2 Feb 2024
Chief Legal Officer
Sell
30,906
$1.37
$42.34K
Ankit Mahadevia
2 Feb 2024
Director
Sell
63,795
$1.37
$87.40K
Timothy Keutzer
2 Feb 2024
Chief Operating Officer
Sell
30,971
$1.36
$42.12K
Kamal Hamed
13 Sep 2023
Chief Medical Officer
Sell
39,496
$1.27
$50.16K
Ankit Mahadevia
28 Aug 2023
Director
Sell
9,040
$1.26
$11.39K
Tamara L Joseph
28 Aug 2023
Chief Legal Officer
Sell
1,854
$1.26
$2.34K
Timothy Keutzer
28 Aug 2023
Chief Development Officer
Sell
1,854
$1.26
$2.34K
Ankit Mahadevia
3 Feb 2023
CEO and President
Sell
12,286
$1.81
$22.24K
Sath Shukla
2 Feb 2023
Chief Financial Officer
Sell
9,504
$1.83
$17.37K
Tamara L Joseph
2 Feb 2023
Chief Legal Officer
Sell
3,394
$1.86
$6.31K
Timothy Keutzer
2 Feb 2023
Chief Operating Officer
Sell
3,394
$1.86
$6.31K
Aquilo Capital Management, LLC
22 Sep 2022
10% owner
Sell indirect
566,284
$2.25
$1.27M
Aquilo Capital Management, LLC
22 Sep 2022
10% owner
Sell indirect
1,335,512
$2.25
$3.01M
Sath Shukla
29 Aug 2022
Chief Financial Officer
Sell
6,017
$0.89
$5.38K
Aquilo Capital Management, LLC
8 Feb 2021
10% owner
Sell indirect
3,000
$21.74
$65.22K
Aquilo Capital Management, LLC
4 Feb 2021
10% owner
Sell indirect
34,144
$18.99
$648.25K
Aquilo Capital Management, LLC
3 Feb 2021
10% owner
Sell indirect
29,354
$18.98
$557.10K
Aquilo Capital Management, LLC
2 Feb 2021
10% owner
Sell indirect
22,841
$18.99
$433.77K
Aquilo Capital Management, LLC
1 Feb 2021
10% owner
Sell indirect
13,661
$19.24
$262.86K
Aquilo Capital Management, LLC
17 Dec 2020
10% owner
Sell indirect
250,000
$18.81
$4.70M
Aquilo Capital Management, LLC
16 Dec 2020
10% owner
Sell indirect
14,933
$18.62
$278.03K
Aquilo Capital Management, LLC
9 Nov 2020
10% owner
Sell indirect
125,900
$13.77
$1.73M
Aquilo Capital Management, LLC
6 Nov 2020
10% owner
Sell indirect
5,000
$13.77
$68.87K
Aquilo Capital Management, LLC
5 Nov 2020
10% owner
Sell indirect
96,600
$13.98
$1.35M
Aquilo Capital Management, LLC
4 Nov 2020
10% owner
Sell indirect
72,500
$14.26
$1.03M
Show all 115 transactions →

What was left out

Form 4 filings counted 197
Amendments (4/A) skipped 0
Filings about a different issuer 0
Unreadable filings 0
Joint filings 23
Sales on a Rule 10b5-1 plan 4
Sales straight out of an exercise 24
Sales at will 53
Transactions with no price 0
Shares from compensation/vesting 13,007,082
Sales filed before the plan box existed 18
History held since 7 Nov 2017