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Septerna, Inc. planned insider sales

In the last twelve months insiders at Septerna, Inc. filed 15 Form 144 notices of planned sales, 1.9 million shares worth $89.1 million at the time of filing, from 9 sellers. The latest, filed 1 October 2026: Daniel Long (officer), 10,001 shares worth $391,339, planned for around 1 October 2026 through Morgan Stanley Smith Barney LLC Executive Financial Services.

FiledSellerRelationshipSharesValuePlanned saleSold, per Form 4BrokerHow acquiredFiling
1 October 2026Daniel LongOfficer10,001$391,3391 October 2026None on Form 4 yetMorgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
1 October 2026Samira ShaikhlyOfficer12,592$492,7251 October 2026None on Form 4 yetMorgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
12 August 2026Third Rock Ventures V, L.P.10% Stockholder147,200$7.5 million12 August 2026147,200 shares from 12 August 2026Raymond James & AssociatesOriginal IssuanceForm 144
12 August 2026RA Capital Healthcare Fund LPaffiliate746,500$36.0 million12 August 2026None on Form 4 yetBTIG LLCIPOForm 144
12 August 2026RA Capital Nexus Fund III, L.P.Affiliate746,500$36.0 million12 August 20261,493,000 shares from 12 August 2026BTIG LLCIPO / Private roundForm 144
11 August 2026Elizabeth P. BhattOfficer29,000$1.1 million11 August 202629,000 shares from 11 August 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
15 July 2026Elizabeth P. BhattOfficer4,000$138,16015 July 20264,000 shares from 15 July 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
26 June 2026Jae KimOfficer2,438$89,24326 June 2026No matching Form 4 saleMorgan Stanley Smith Barney LLC Executive Financial ServicesEmployee Stock Purchase PlanForm 144
22 June 2026Daniel LongOfficer25,000$904,25022 June 202625,000 shares from 22 June 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
22 June 2026Jae KimOfficer94,339$3.3 million22 June 2026No matching Form 4 saleMorgan Stanley Smith Barney LLC Executive Financial ServicesStock Option ExerciseForm 144
12 June 2026Samira ShaikhlyOfficer8,428$286,80512 June 20268,428 shares from 12 June 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
26 May 2026Samira ShaikhlyOfficer11,798$334,59126 May 202617,733 shares from 26 May 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
2 March 2026Samira ShaikhlyOfficer76,388$2.2 million2 March 202670,453 shares from 2 March 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
18 February 2026Elizabeth BhattOfficer8,000$242,40018 February 20268,000 shares from 18 February 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
10 November 2025Daniel David LongOfficer3,501$63,22310 November 20253,501 shares from 10 November 2025Morgan Stanley Smith Barney LLC Executive Financial ServicesEmployee Stock Purchase PlanForm 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?