Form4insider filings, from the source

Insider · CIK 0001030575

Jean Francois Formela

Files at: KRRO, NTLA, TBIO, SPRO. On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $6.0M · 1sales $9.3M · 12net −$3.3M
$10k$10k$100k$100k$1M$1M$10M$10MbuyssalesMar 2017Oct 2018May 2020Dec 2021Jul 2023Feb 2025Sep 2026

Reported trades — common stock

TradeReported (ET)CompanySharesAvg priceTotalOwned afterΔ stakeFlags
Sep 11, 2026 SForm 4 →Sep 15, 4:15 pm EDTKorro Bio, Inc.KRRO48,690$14.09$686,177132,650−26.9%10b5-1
Aug 26, 2026 SForm 4 →Aug 28, 4:30 pm EDTKorro Bio, Inc.KRRO300$13.96$4,188141,002−0.21%10b5-1
Aug 19, 2026 SForm 4 →Aug 21, 4:20 pm EDTKorro Bio, Inc.KRRO28,468$14.00$398,552141,053−16.8%10b5-1
Aug 11, 2026 SForm 4 →Aug 13, 5:04 pm EDTKorro Bio, Inc.KRRO2,143$13.96$29,916145,937−1.45%10b5-1
Jul 2, 2026 SForm 4 →Jul 7, 6:04 pm EDTKorro Bio, Inc.KRRO110,023$14.02$1,542,970146,305−42.9%10b5-1
Jun 22, 2026 SForm 4 →Jun 24, 8:09 pm EDTKorro Bio, Inc.KRRO171,405$14.34$2,458,582169,556−50.3%10b5-1
Jul 16, 2018 SForm 4 →Jul 18, 8:40 am EDTIntellia Therapeutics, Inc.NTLA6,686$31.17$208,3970−100% plan?
Jul 2, 2018 CForm 4 →Jul 3, 6:37 pm EDTTranslate Bio, Inc.TBIO3,832,010——3,922,010— plan?
Jun 19, 2018 SForm 4 →Jun 20, 12:03 pm EDTIntellia Therapeutics, Inc.NTLA6,686$27.96$186,9080−100% plan?
May 16, 2018 SForm 4 →May 17, 10:47 am EDTIntellia Therapeutics, Inc.NTLA6,686$25.04$167,3890−100% plan?
Mar 20, 2018 SForm 4 →Mar 22, 1:43 pm EDTIntellia Therapeutics, Inc.NTLA39,245$23.87$936,7430−100% plan?
Nov 6, 2017 PForm 4 →Nov 7, 4:08 pm ESTSpero Therapeutics, Inc.SPRO428,571$14.00$5,999,9942,408,128+21.6% plan?
Nov 6, 2017 CForm 4 →Nov 7, 4:08 pm ESTSpero Therapeutics, Inc.SPRO1,936,776——1,979,557— plan?
Jul 7, 2017 SForm 4 →Jul 11, 5:40 pm EDTIntellia Therapeutics, Inc.NTLA150,000$16.24$2,435,4403,579,788−4.02% plan?
Mar 9, 2017 SForm 4 →Mar 13, 10:34 am EDTIntellia Therapeutics, Inc.NTLA21,132$13.91$293,8430−100% plan?
May 11, 2016 CForm 4 →May 11, 7:01 pm EDTIntellia Therapeutics, Inc.NTLA4,429,788——4,429,788— plan?

Reported trades — derivatives (options, RSUs, warrants)

TradeReported (ET)CompanySharesAvg priceTotalOwned afterΔ stakeFlags
Jun 10, 2026 AForm 4 →Jun 11, 5:58 pm EDTKorro Bio, Inc.KRRO14,677——14,677—
Jul 2, 2018 CForm 4 →Jul 3, 6:37 pm EDTTranslate Bio, Inc.TBIO21,288,727——0—
Jun 5, 2018 AForm 4 →Jun 6, 8:01 pm EDTSpero Therapeutics, Inc.SPRO6,073——6,073—
May 17, 2018 AForm 4 →May 21, 12:59 pm EDTIntellia Therapeutics, Inc.NTLA19,000——19,000—
Nov 6, 2017 CForm 4 →Nov 7, 4:08 pm ESTSpero Therapeutics, Inc.SPRO10,507,362——0—
May 18, 2017 AForm 4 →May 19, 5:12 pm EDTIntellia Therapeutics, Inc.NTLA19,000——19,000—
May 11, 2016 CForm 4 →May 11, 7:01 pm EDTIntellia Therapeutics, Inc.NTLA6,850,999——0—
May 5, 2016 AForm 4 →May 9, 5:49 pm EDTIntellia Therapeutics, Inc.NTLA23,529——23,529—