ATTO · NASDAQ · Biotechnology

Atento S.A. (ATTO)

$20.43
vs last close−0.87 (−4.08%)

13F · 13D/G · Form 4

Insiders16.43%7.50M shares
6 holders · as of Aug 7, 2026
Strategic holders32.87%15.01M shares
6 holders · as of Aug 13, 2026
Other50.70%23.14M shares
remainder

45.65M company shares as of Sep 22, 2026 · holders as of their latest filing

13F · 13D/G · Form 4

HolderStakeSharesDate
Life Sciences XI L.P. FrazierInsider10 percent owner
13.48%6.15Mfiled Aug 6, 2026
venBio Global Strategic Fund IV, L.P.Strategic10 percent owner
9.16%4.18Mfiled Aug 10, 2026
Alamar HoldCo, LLCStrategic10 percent owner
7.07%3.23Mfiled Aug 5, 2026
Goldman Sachs Group IncStrategicother: Former 10% Owner
6.88%3.14Mfiled Aug 13, 2026
Redmile Group, LLCStrategic10 percent owner
4.74%2.17Mfiled Aug 7, 2026
Deep Track Biotechnology Master Fund, Ltd.Strategic10 percent owner
4.29%1.96Mfiled Aug 10, 2026
SanofiInsider10 percent owner
2.37%1.08Mfiled Aug 7, 2026
Attovia Therapeutics, Inc.Strategicdirector, officer: President and CEO
0.73%333,268filed Aug 4, 2026
Petter VeibyInsiderofficer: Chief Scientific Officer
0.23%104,951filed Aug 4, 2026
Zaneta OdrowazInsiderofficer: Chief Business Officer
0.23%103,269filed Aug 4, 2026
Angie YouInsiderdirector
0.12%52,852filed Aug 4, 2026
Hubert ChenInsiderofficer: Chief Medical Officer
0.01%2,960filed Aug 4, 2026
Alpha Plus Gestora, S.G.I.I.C., S.A.U.Insider
2.70% of class, as filedfiled Aug 24, 2018
Aquiline Credit Opportunities Fund L.P.Institution
8.40% of class, as filedfiled Mar 13, 2023
Chesham Investment Pte. Ltd.Strategic
23.20% of class, as filedfiled Jul 6, 2020
GLG Partners LPInstitution
16.50% of class, as filedfiled Mar 13, 2023
HPS Investment Partners, LLCInstitution
26.90% of class, as filedfiled Jul 6, 2020
Intrepid Capital Management, Inc.Institution
8.40% of class, as filedfiled Mar 13, 2023
Iowa City Capital Partners, LCStrategic
5.32% of class, as filedfiled Mar 20, 2023
Kyma Capital LimitedStrategic
5.21% of class, as filedfiled Mar 23, 2022
S.c.a.Insider
2.26% of class, as filedfiled Jul 9, 2020
Santa Lucia Asset Management, SGIIC, S.A.Institution
3.00% of class, as filedfiled Feb 19, 2021
Taheebo Holdings LLCStrategic
15.80% of class, as filedfiled Jul 2, 2020
Colin Walsh1Insiderdirector
0.00%0filed Aug 13, 2026
Wellington Management Group LLPStrategic
0.62% of class, as filedfiled Jan 27, 2020
  1. Colin Walsh reports a block also reported by Goldman Sachs Group Inc; it is counted once, under Goldman Sachs Group Inc.

13F

No 13F holders on record.

13D/G · 5% or more, as filed

No 13D/G filer at 5% or more on record.

Form 4

Latest trades

DateInsiderTypeSharesAvg priceOwned after
Aug 5, 2026
Goldman Sachs Group Incother: Former 10% Owner
Purchase · 7 lots190,807$21.00190,807
Aug 5, 2026
Colin Walshdirector
Purchase · 7 lots190,807$21.00190,807
Aug 6, 2026
Colin Walshdirector
Purchase500,000$17.003,020,632
Aug 5, 2026
Colin Walshdirector
Sale · 22 lots105,607$21.280
Aug 6, 2026
Goldman Sachs Group Incother: Former 10% Owner
Purchase500,000$17.003,020,632
Aug 5, 2026
Goldman Sachs Group Incother: Former 10% Owner
Sale · 22 lots105,607$21.280
Aug 6, 2026
venBio Global Strategic Fund IV, L.P.10 percent owner
Purchase382,352$17.004,181,367
Aug 6, 2026
Redmile Group, LLC10 percent owner
Purchase · 2 lots600,000$17.002,165,708
Aug 6, 2026
Sanofi10 percent owner
Purchase300,000$17.001,082,855
Aug 6, 2026
Life Sciences XI L.P. Frazier10 percent owner
Purchase588,235$17.006,154,213

House and Senate disclosures

Not reported.