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ATRAAtara Biotherapeutics, Inc.

Market cap
$86.22M
as of 2026-10-23
Latest close
$8.59
as of 2026-10-23
Sector
Healthcare
as of 2026-10-24
Industry
Biotechnology
as of 2026-10-24

Cluster

No cluster in the last 90 days under the default rule (14d · ≥2 insiders · all roles).

Form 4 historysince 2023-11-14

InsiderTradedFiledTypeSharesPriceValueOwned after10b5-1 planFiling
Cherry Brian NSep 4Sep 4P104,166$9.60Purchase +$999,994166,486NoForm 4
Nguyen AnhCoPresident and CEOAug 17Aug 26S5,062$8.08Sale −$40,901132,775NoForm 4
Redmile Group, LLCJul 22Jul 24M195,211not reportednot reported636,912NoForm 4
Redmile Group, LLCJul 22Jul 24F60not reportednot reported636,852NoForm 4
Redmile Group, LLCJul 22Jul 24M · derivative101,089$0.00$0not reportedNoForm 4
Redmile Group, LLCJul 22Jul 24M · derivative38,735$0.00$0not reportedNoForm 4
Redmile Group, LLCJul 22Jul 24M · derivative55,387$0.00$0not reportedNoForm 4
Cherry Brian NJun 11Jun 15A24,000$0.00$062,320NoForm 4
Ciongoli Gregory AustinJun 9Jun 11A12,000$0.00$012,000NoForm 4
Fust Matthew KJun 9Jun 11A12,000$0.00$030,188NoForm 4
Heiden William KJun 9Jun 11A12,000$0.00$034,188NoForm 4
Grant-Huerta YaninaChief Accounting OfficerMay 18May 20S2,414$9.13Sale −$22,04049,636NoForm 4
Nguyen AnhCoPresident and CEOMay 18May 20S5,241$9.13Sale −$47,850137,837NoForm 4
EcoR1 Capital, LLCMay 7May 11P507,407$9.35Purchase +$4,744,2551,552,000NoForm 4
Panacea Innovation LtdMay 7May 11S313,446$10.10Sale −$3,165,8051,011,000NoForm 4
Panacea Innovation LtdMar 17Mar 19M259,163$0.00$0307,899NoForm 4
Panacea Innovation LtdMar 17Mar 19F5$5.23$26307,894NoForm 4
Panacea Innovation LtdMar 17Mar 19M · derivative259,163$6.61$1,713,067not reportedNoForm 4
Grant-Huerta YaninaChief Accounting OfficerMar 9Mar 11A20,300$0.00$052,050NoForm 4
Nguyen AnhCoPresident and CEOMar 9Mar 11A81,100$0.00$0143,078NoForm 4
Nguyen AnhCoPresident and CEOMar 2Mar 4S198$5.08Sale −$1,00664,776NoForm 4
Nguyen AnhCoPresident and CEOMar 2Mar 4S58$5.08Sale −$29564,718NoForm 4
Nguyen AnhCoPresident and CEOMar 2Mar 4S1,298$5.09Sale −$6,60763,420NoForm 4
Nguyen AnhCoPresident and CEOMar 2Mar 4S1,442$5.09Sale −$7,34061,978NoForm 4
Grant-Huerta YaninaChief Accounting OfficerMar 2Mar 4S24$5.08Sale −$12233,830NoForm 4
Grant-Huerta YaninaChief Accounting OfficerMar 2Mar 4S1,603$5.08Sale −$8,14332,227NoForm 4
Grant-Huerta YaninaChief Accounting OfficerMar 2Mar 4S377$5.08Sale −$1,91531,850NoForm 4
Grant-Huerta YaninaChief Accounting OfficerMar 2Mar 4S100$5.08Sale −$50831,750NoForm 4
Huang JamesJan 12Jan 14S80,554$6.07Sale −$488,9631,324,446NoForm 4
Panacea Innovation LtdNov 28, 2025Dec 1, 2025M48,737$0.00$048,737NoForm 4
Panacea Innovation LtdNov 28, 2025Dec 1, 2025F1$14.03$1448,736NoForm 4
Panacea Innovation LtdNov 28, 2025Dec 1, 2025M · derivative48,737$6.61$322,152259,163NoForm 4
Grant-Huerta YaninaChief Accounting OfficerNov 17, 2025Nov 19, 2025S1,645$13.19Sale −$21,69833,613NoForm 4
Grant-Huerta YaninaChief Accounting OfficerNov 17, 2025Nov 19, 2025S85$13.19Sale −$1,12133,528NoForm 4
Grant-Huerta YaninaChief Accounting OfficerNov 17, 2025Nov 19, 2025S74$13.19Sale −$97633,454NoForm 4
Nguyen AnhCoPresident and CEONov 17, 2025Nov 19, 2025S2,859$13.19Sale −$37,71065,030NoForm 4
Nguyen AnhCoPresident and CEONov 17, 2025Nov 19, 2025S56$13.19Sale −$73964,974NoForm 4
Grant-Huerta YaninaChief Accounting OfficerAug 18, 2025Aug 20, 2025S55$11.61Sale −$63937,012NoForm 4
Grant-Huerta YaninaChief Accounting OfficerAug 18, 2025Aug 20, 2025S86$11.61Sale −$99836,926NoForm 4
Grant-Huerta YaninaChief Accounting OfficerAug 18, 2025Aug 20, 2025S1,668$11.61Sale −$19,36535,258NoForm 4
Nguyen AnhCoPresident and CEOAug 18, 2025Aug 20, 2025S57$11.61Sale −$66270,790NoForm 4
Nguyen AnhCoPresident and CEOAug 18, 2025Aug 20, 2025S1,281$11.62Sale −$14,88569,509NoForm 4
Nguyen AnhCoPresident and CEOAug 18, 2025Aug 20, 2025S1,620$11.62Sale −$18,82467,889NoForm 4
Panacea Innovation LtdAug 15, 2025Aug 19, 2025P55,000$12.19Purchase +$670,4501,405,000NoForm 4
Huang JamesJul 17, 2025Jul 21, 2025P19,335$9.64Purchase +$186,3891,350,000NoForm 4
Heiden William KJun 10, 2025Jun 12, 2025A7,828$0.00$022,188NoForm 4
Mallik AmeetJun 10, 2025Jun 12, 2025A7,828$0.00$016,928NoForm 4
Roncarolo Maria GraziaJun 10, 2025Jun 12, 2025A7,828$0.00$017,368NoForm 4
Touchon PascalJun 10, 2025Jun 12, 2025A7,828$0.00$077,955NoForm 4
Fust Matthew KJun 10, 2025Jun 12, 2025A7,828$0.00$018,188NoForm 4
Gallagher Carol GiltnerJun 10, 2025Jun 12, 2025A7,828$0.00$033,012NoForm 4
Nguyen AnhCoPresident and CEOMay 16, 2025May 20, 2025S3,276$6.76Sale −$22,14670,847NoForm 4
Grant-Huerta YaninaChief Accounting OfficerMay 16, 2025May 20, 2025S2,218$6.76Sale −$14,99437,067NoForm 4
Adiumentum Capital Fund I GP LLCMay 16, 2025May 16, 2025A75,572$6.61$499,5311,209,395NoForm 4
Adiumentum Capital Fund I GP LLCMay 16, 2025May 16, 2025A · derivative227,000$6.61$1,500,470377,193NoForm 4
Hyllengren Eric JMar 31, 2025Apr 2, 2025D · derivative1,900$996.25$1,892,875not reportedNoForm 4
Hyllengren Eric JMar 31, 2025Apr 2, 2025D · derivative460$961.75$442,405not reportedNoForm 4
Hyllengren Eric JMar 31, 2025Apr 2, 2025D · derivative496$303.75$150,660not reportedNoForm 4
Hyllengren Eric JMar 31, 2025Apr 2, 2025D · derivative154$303.75$46,778not reportedNoForm 4
Hyllengren Eric JMar 31, 2025Apr 2, 2025D · derivative381$427.63$162,927not reportedNoForm 4
Hyllengren Eric JMar 31, 2025Apr 2, 2025D · derivative350$427.63$149,671not reportedNoForm 4
Hyllengren Eric JMar 31, 2025Apr 2, 2025D · derivative262$255.25$66,876not reportedNoForm 4
Hyllengren Eric JMar 31, 2025Apr 2, 2025D · derivative543$255.25$138,601160NoForm 4
Hyllengren Eric JMar 31, 2025Apr 2, 2025D · derivative331$97.75$32,355not reportedNoForm 4
Hyllengren Eric JMar 31, 2025Apr 2, 2025D · derivative8,961$97.75$875,9382,656NoForm 4
Henrich JillEVP, Chief Regulatory OfficerMar 3, 2025Mar 5, 2025S1,059$7.00Sale −$7,41318,679NoForm 4
Hyllengren Eric JEVP, CFO and COOMar 3, 2025Mar 5, 2025S1,211$7.00Sale −$8,47756,231NoForm 4
Nguyen AnhCoPresident and CEOMar 3, 2025Mar 5, 2025S3,331$7.00Sale −$23,31774,123NoForm 4
Hyllengren Eric JEVP, CFO and COOJan 27, 2025Jan 29, 2025A34,050$0.00$057,442NoForm 4
Nguyen AnhCoPresident and CEONov 18, 2024Nov 20, 2024S1,664$11.20Sale −$18,63777,454NoForm 4
Hyllengren Eric JEVP, CFO and COONov 18, 2024Nov 20, 2024S1,364$11.20Sale −$15,27723,392NoForm 4
Henrich JillEVP, Chief Regulatory OfficerNov 18, 2024Nov 20, 2024S1,000$11.20Sale −$11,20019,378NoForm 4
Nguyen AnhCoPresident and CEOSep 9, 2024Sep 11, 2024A45,000$0.00$079,118NoForm 4
Henrich JillEVP, Global Head RA & QualityAug 16, 2024Aug 20, 2024S831$6.63Sale −$5,51020,510NoForm 4
Henrich JillEVP, Global Head RA & QualityAug 16, 2024Aug 20, 2024S132$6.63Sale −$87520,378NoForm 4
Hyllengren Eric JEVP, CFOAug 16, 2024Aug 20, 2024S1,041$6.63Sale −$6,90224,785NoForm 4
Hyllengren Eric JEVP, CFOAug 16, 2024Aug 20, 2024S29$6.63Sale −$19224,756NoForm 4
Murugan AmarEVP, Chief Legal OfficerAug 16, 2024Aug 20, 2024S877$6.63Sale −$5,81527,108NoForm 4
Murugan AmarEVP, Chief Legal OfficerAug 16, 2024Aug 20, 2024S192$6.63Sale −$1,27326,916NoForm 4
Murugan AmarEVP, Chief Legal OfficerAug 16, 2024Aug 20, 2024S89$6.63Sale −$59026,827NoForm 4
Nguyen AnhCoEVP, Chief Sci. & Tech OfficerAug 16, 2024Aug 20, 2024S1,468$6.63Sale −$9,73334,471NoForm 4
Nguyen AnhCoEVP, Chief Sci. & Tech OfficerAug 16, 2024Aug 20, 2024S297$6.63Sale −$1,96934,174NoForm 4
Nguyen AnhCoEVP, Chief Sci. & Tech OfficerAug 16, 2024Aug 20, 2024S56$6.63Sale −$37134,118NoForm 4
Touchon PascalPresident and CEOAug 16, 2024Aug 20, 2024S2,762$6.63Sale −$18,31270,403NoForm 4
Touchon PascalPresident and CEOAug 16, 2024Aug 20, 2024S276$6.63Sale −$1,83070,127NoForm 4
Touchon PascalPresident and CEOAug 12, 2024Aug 14, 2024D · derivative9,000$510.75$4,596,750not reportedNoForm 4
Touchon PascalPresident and CEOAug 12, 2024Aug 14, 2024D · derivative9,680$303.75$2,940,300not reportedNoForm 4
Touchon PascalPresident and CEOAug 12, 2024Aug 14, 2024D · derivative7,075$427.63$3,025,482not reportedNoForm 4
Henrich JillEVP, Global Head RA & QualityMay 16, 2024May 20, 2024S25,750$0.62Sale −$15,965529,251NoForm 4
Hyllengren Eric JEVP, CFOMay 16, 2024May 20, 2024S28,648$0.62Sale −$17,762645,671NoForm 4
Murugan AmarEVP, Chief Legal OfficerMay 16, 2024May 20, 2024S32,401$0.62Sale −$20,089695,120NoForm 4
Nguyen AnhCoEVP, Chief Sci. & Tech OfficerMay 16, 2024May 20, 2024S42,899$0.62Sale −$26,597898,498NoForm 4
Touchon PascalPresident and CEOMay 16, 2024May 20, 2024S81,506$0.62Sale −$50,5341,829,146NoForm 4
Mallik AmeetMar 31, 2024Apr 2, 2024A150,000$0.00$0227,500NoForm 4
Gallagher Carol GiltnerMar 31, 2024Apr 2, 2024A150,000$0.00$0629,608NoForm 4
Roncarolo Maria GraziaMar 31, 2024Apr 2, 2024A150,000$0.00$0238,500NoForm 4
Heiden William KMar 31, 2024Apr 2, 2024A150,000$0.00$0359,000NoForm 4
Fust Matthew KMar 31, 2024Apr 2, 2024A150,000$0.00$0259,000NoForm 4
Henrich JillEVP, Global Head RA & QualityMar 4, 2024Mar 6, 2024S3,879$0.72Sale −$2,793555,001NoForm 4
Hyllengren Eric JEVP, CFOMar 4, 2024Mar 6, 2024S1,462$0.72Sale −$1,053679,536NoForm 4
Hyllengren Eric JEVP, CFOMar 4, 2024Mar 6, 2024S5,217$0.72Sale −$3,756674,319NoForm 4
Murugan AmarEVP, Chief Legal OfficerMar 4, 2024Mar 6, 2024S10,044$0.72Sale −$7,232727,521NoForm 4
Nguyen AnhCoEVP, Chief Sci. & Tech OfficerMar 4, 2024Mar 6, 2024S10,746$0.72Sale −$7,737941,397NoForm 4
Touchon PascalPresident and CEOMar 4, 2024Mar 6, 2024S24,844$0.72Sale −$17,8881,910,652NoForm 4
Henrich JillEVP, Global Head RA & QualityJan 8, 2024Jan 9, 2024A450,000$0.00$0558,880NoForm 4
Hyllengren Eric JEVP, CFOJan 8, 2024Jan 9, 2024A475,000$0.00$0680,998NoForm 4
Murugan AmarEVP, Chief Legal OfficerJan 8, 2024Jan 9, 2024A475,000$0.00$0737,565NoForm 4
Nguyen AnhCoEVP, Chief Sci. & Tech OfficerJan 8, 2024Jan 9, 2024A675,000$0.00$0952,143NoForm 4
Touchon PascalPresident and CEOJan 8, 2024Jan 9, 2024A1,280,000$0.00$01,935,496NoForm 4
Henrich JillEVP, Global Head RA & QualityNov 16, 2023Nov 20, 2023S3,267$0.39Sale −$1,274104,424NoForm 4
Hyllengren Eric JSVP, CFONov 16, 2023Nov 20, 2023S11,958$0.39Sale −$4,664205,998NoForm 4
Joshi ManherEVP, Chief Medical OfficerNov 16, 2023Nov 20, 2023S12,287$0.39Sale −$4,792171,284NoForm 4
Murugan AmarEVP, Chief Legal OfficerNov 16, 2023Nov 20, 2023S8,307$0.39Sale −$3,240257,084NoForm 4
Nguyen AnhCoEVP, Chief Sci. & Tech OfficerNov 16, 2023Nov 20, 2023S8,856$0.39Sale −$3,454277,143NoForm 4
Touchon PascalPresident and CEONov 16, 2023Nov 20, 2023S20,409$0.39Sale −$7,960655,496NoForm 4
Gallagher Carol GiltnerNov 14, 2023Nov 15, 2023P90,980$0.31Purchase +$28,204459,418NoForm 4
Gallagher Carol GiltnerNov 13, 2023Nov 15, 2023P179,020$0.22Purchase +$39,384368,438NoForm 4
Dobmeier EricNov 10, 2023Nov 14, 2023P446,825$0.23Purchase +$102,770563,325NoForm 4
Heiden William KNov 10, 2023Nov 14, 2023P100,000$0.25Purchase +$25,000209,000NoForm 4