Stocks · Health care · Biological Products, (No Diagnostic Substances)

Tectonic Therapeutic, Inc.

TECX Clue Score49

United States Fiscal year ends December CIK 0001681087 Results filed 6 Aug 2026

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What the insiders did Net buying

By person

27 insiders · 62 transactions

Insider

Role

Bought

Sold

Net

Holding

Of company

Worth

Change

Timothy A Springer

Director

$62.37M (17)

—

+$62.37M

5,838,204

29.86%

$134.51M

—

Atlas Venture Fund X, L.P. entity

10% owner

$15.00M (1)

—

+$15.00M

5,567,289

28.48%

$128.27M

—

Bruce Booth

Director

$15.00M (1)

—

+$15.00M

5,567,289

28.48%

$128.27M

—

Terrance McGuire

Director

—

$8.55M (1)

−$8.55M

573,062

2.93%

$13.20M

—

Geoffrey Mackay

President & CEO

—

$2.16M (5)

−$2.16M

978,343

5.00%

$22.54M

+27.3%

Braden Michael Leonard

Former 10% owner of AVROBIO

$971.49K (3)

—

+$971.49K

433,688

2.22%

$9.99M

—

Christopher Paige

Director

—

$907.20K (6)

−$907.20K

252,512

1.29%

$5.82M

−12.2%

Daniel Lochner

Chief Financial Officer

$379.62K (2)

—

+$379.62K

58,024

0.2968%

$1.34M

—

Marcella K. Ruddy

Chief Medical Officer

—

$363.00K (3) scheduled

−$363.00K

67,157

0.3435%

$1.55M

—

Peter McNamara

Chief Scientific Officer

—

$288.01K (8) scheduled

−$288.01K

54,305

0.2778%

$1.25M

—

Alise Reicin

Chief Executive Officer

$52.75K (1)

—

+$52.75K

570,638

2.92%

$13.15M

+358.2%

Philip J. Vickers

Director

$40.08K (1)

—

+$40.08K

4,800

0.0246%

$110.59K

—

Phillip B. Donenberg

Director

$23.42K (1)

—

+$23.42K

2,000

0.0102%

$46.08K

—

Clarus Lifesciences III, L.P.

10% owner

—

—

—

4,443,487

22.73%

$102.38M

+50.0%

Atlas Venture Associates X, L.p. entity

10% owner

—

—

—

3,710,052

18.98%

$85.48M

−22.0%

Scott Requadt

Director

—

—

—

2,962,325

15.15%

$68.25M

—

Christian Cortis

Chief Operating Officer

—

—

—

126,368

0.6464%

$2.91M

—

Svlsf Vi, LLC entity

10% owner

—

—

—

63,913

0.3269%

$1.47M

—

Azadeh Golipour

Chief Technology Officer

—

—

—

55,872

0.2858%

$1.29M

+53.7%

Marc Schwabish

Chief Business Officer

—

—

—

44,903

0.2297%

$1.03M

—

Erik Ostrowski

Interim CEO, President and CFO

—

—

—

29,285

0.1498%

$674.73K

—

Stefan Vitorovic

Director

—

—

—

27,774

0.1421%

$639.91K

—

Steven Avruch

Chief Legal Officer

—

—

—

22,022

0.1126%

$507.39K

—

Essra Ridha

Chief Medical Officer

—

—

—

15,881

0.0812%

$365.90K

—

Katina Dorton

Chief Financial Officer

—

—

—

10,000

0.0512%

$230.40K

—

Praveen P. Tipirneni

Director

—

—

—

3,037

0.0155%

$69.97K

—

Nerissa Kreher

Chief Medical Officer

—

—

—

2,942

0.0150%

$67.78K

—