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Taysha Gene Therapies, Inc. planned insider sales

In the last twelve months insiders at Taysha Gene Therapies, Inc. filed 17 Form 144 notices of planned sales, 1.5 million shares worth $7.8 million at the time of filing, from 8 sellers. The latest, filed 10 July 2026: Nagendran Sukumar (officer), 200,000 shares worth $1.3 million, planned for around 10 July 2026 through Jefferies LLC.

FiledSellerRelationshipSharesValuePlanned saleSold, per Form 4BrokerHow acquiredFiling
10 July 2026Nagendran SukumarOfficer200,000$1.3 million10 July 2026200,000 shares from 10 July 2026Jefferies LLCStock Option GrantForm 144
10 April 2026Nagendran SukumarOfficer200,000$926,00010 April 2026200,000 shares from 10 April 2026Jefferies LLCRSU Grant; Stock Option GrantForm 144
27 February 2026Rumana Haque-AhmedOfficer2,405$10,99127 February 2026No matching Form 4 saleMaxim Group LLCRSU AwardForm 144
4 February 2026Rumana Haque-AhmedOfficer697$3,2904 February 2026No matching Form 4 saleMaxim Group LLCRSU AwardForm 144
4 February 2026Fred PorterAffiliate-Chief of Staff & Tech.Op.Officer889$4,1964 February 2026No matching Form 4 saleMaxim Group LLCRSU AwardForm 144
4 February 2026Emily McGinnisAffiliate-Chief Pat. Adv. & Ext. Aff. Off.901$4,2534 February 2026No matching Form 4 saleMaxim Group LLCRSU AwardForm 144
4 February 2026Sean McAuliffeAffiliate - Chief Business Officer914$4,3144 February 2026No matching Form 4 saleMaxim Group LLCRSU AwardForm 144
4 February 2026Kamran AlamOfficer1,655$7,8124 February 20261,655 shares from 4 February 2026Maxim Group LLCRSU AwardForm 144
23 January 2026Rumana Haque-AhmedOfficer30,052$152,96523 January 2026No matching Form 4 saleMaxim Group LLCRSU AwardForm 144
23 January 2026Emily McGinnisAffiliate-Chief Pat. Adv. & Ext. Aff. Off.32,077$163,27223 January 2026No matching Form 4 saleMaxim Group LLCRSU AwardForm 144
23 January 2026Sean McAuliffeAffiliate - Chief Business Officer46,064$234,46623 January 2026No matching Form 4 saleMaxim Group LLCRSU AwardForm 144
23 January 2026Fred PorterAffiliate-Chief of Staff & Tech.Op.Officer54,916$279,52223 January 2026No matching Form 4 saleMaxim Group LLCRSU AwardForm 144
23 January 2026Kamran AlamOfficer100,846$513,30623 January 2026102,817 shares from 23 January 2026Maxim Group LLCRSU AwardForm 144
23 January 2026Sukumar NagendranOfficer113,824$579,36423 January 2026116,050 shares from 23 January 2026Maxim Group LLCRSU AwardForm 144
23 January 2026Sean P. NolanOfficer, Director168,078$855,51723 January 2026178,101 shares from 23 January 2026Maxim Group LLCRSU AwardForm 144
12 January 2026Nagendran SukumarOfficer200,000$996,00012 January 2026200,000 shares from 12 January 2026Jefferies LLCVested Stock Option GrantForm 144
28 November 2025Nagendran SukumarOfficer370,172$1.8 million28 November 2025370,172 shares from 28 November 2025Jefferies LLCVested Stock Option GrantForm 144
A Form 144 is the notice an insider files with the SEC before selling restricted or control shares over the Rule 144 thresholds; it says what may be sold, not what was.
Read moreValue is the filer's own aggregate market value. Sold, per Form 4: the same seller's open-market sales on Form 4 from the notice's date to 90 days after, added up, as they appear on the insiders page; a holder who files no Form 4, such as some large holders, never shows one. What is a Form 144?