United States Biotechnology & Medical Research

Tectonic Therapeutic, Inc. (TECX)

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Tectonic Therapeutic Inc. witnessed seven insider trading transactions over the past ninety days, totaling 679,287.09 USD in sales. Former director Terrance McGuire and executive Peter McNamara executed these divestments. This activity follows a positive earnings report where the firm exceeded expectations by 16.31 percent, while the stock price maintains a moderate upward trend.
Ticker: TECX Exchange: NMS
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
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Top insiders
Trades
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
1.4
TERRANCE MCGUIRE Former Director Non-Executive Director
Transaction date
Proposed sale
Price
275.48
Quantity 13,506
Value US$2,860,347
McNamara Peter Chief Scientific Officer Officer
Transaction date
Planned sale
Price
167.56
Quantity 76,172 +13.9%
Value US$4,571,013
1.4
TERRANCE MCGUIRE Former Director Non-Executive Director
Transaction date
Proposed sale
Price
368.69
Quantity 92,899
Value US$194,793
McNamara Peter Chief Scientific Officer Officer
Transaction date
Planned sale
Price
35.00
Quantity 43 -0.1%
Value US$1,505
PETER MCNAMARA Officer Officer
Transaction date
Proposed sale
Price
31.87
Quantity 129
Value US$4,111
McNamara Peter Chief Scientific Officer Officer
Transaction date
Planned sale
Price
35.00
Quantity 172 -0.3%
Value US$6,020
PETER MCNAMARA Officer Officer
Transaction date
Proposed sale
Price
33.09
Quantity 172
Value US$5,691
Ruddy Marcella K. Chief Medical Officer Officer
Transaction date
Planned sale
Price
30.00
Quantity 1,065 -1.5%
Value US$31,950
Ruddy Marcella K. Chief Medical Officer Officer
Transaction date
Planned sale
Price
31.05
Quantity 1,000 -1.4%
Value US$31,050
Ruddy Marcella K. Chief Medical Officer Officer
Transaction date
Planned sale
Price
30.00
Quantity 10,000 -12.5%
Value US$300,000
McNamara Peter Chief Scientific Officer Officer
Transaction date
Planned sale
Price
35.00
Quantity 215 -0.4%
Value US$7,525
McNamara Peter Chief Scientific Officer Officer
Transaction date
Planned sale
Price
30.00
Quantity 6,047 -9.8%
Value US$181,410
PETER MCNAMARA Officer Officer
Transaction date
Proposed sale
Price
27.85
Quantity 6,262
Value US$174,397
MARCELLA RUDDY Officer Officer
Transaction date
Proposed sale
Price
27.85
Quantity 12,065
Value US$336,010
McNamara Peter Chief Scientific Officer Officer
Transaction date
Planned sale
Price
25.00
Quantity 1,650 -2.7%
Value US$41,250
PETER MCNAMARA Officer Officer
Transaction date
Proposed sale
Price
24.40
Quantity 1,650
Value US$40,252
McNamara Peter Chief Scientific Officer Officer
Transaction date
Planned sale
Price
22.06
Quantity 1,649 -4.2%
Value US$36,377
PETER MCNAMARA Officer Officer
Transaction date
Proposed sale
Price
23.00
Quantity 1,649
Value US$37,927
3.3
REICIN ALISE Chief Executive Officer Executive Director
Transaction date
Purchase
Price
21.10
Quantity 2,500 +1.1%
Value US$52,750
3.3
Lochner Daniel Chief Financial Officer Officer
Transaction date
Purchase
Price
21.61
Quantity 6,000 +23.0%
Value US$129,660
3.4
SPRINGER TIMOTHY A Non-Executive Director Large shareholder
Transaction date
Purchase
Price
16.31
Quantity 53,706 +3.7%
Value US$875,945
3.4
SPRINGER TIMOTHY A Non-Executive Director Large shareholder
Transaction date
Purchase
Price
16.31
Quantity 9,478 +0.2%
Value US$154,586
3.4
SPRINGER TIMOTHY A Non-Executive Director Large shareholder
Transaction date
Purchase
Price
16.73
Quantity 45,858 +3.3%
Value US$767,204
3.4
SPRINGER TIMOTHY A Non-Executive Director Large shareholder
Transaction date
Purchase
Price
16.73
Quantity 8,092 +0.2%
Value US$135,379
3.4
SPRINGER TIMOTHY A Non-Executive Director Large shareholder
Transaction date
Purchase
Price
15.23
Quantity 4,856 +0.3%
Value US$73,957
3.4
SPRINGER TIMOTHY A Non-Executive Director Large shareholder
Transaction date
Purchase
Price
14.62
Quantity 16,215 +1.2%
Value US$237,063
3.4
SPRINGER TIMOTHY A Non-Executive Director Large shareholder
Transaction date
Purchase
Price
15.23
Quantity 857 +0.0%
Value US$13,052
3.4
SPRINGER TIMOTHY A Non-Executive Director Large shareholder
Transaction date
Purchase
Price
14.62
Quantity 2,861 +0.1%
Value US$41,828
3.4
SPRINGER TIMOTHY A Non-Executive Director Large shareholder
Transaction date
Purchase
Price
17.10
Quantity 412,500 +42.5%
Value US$7,053,750
3.4
SPRINGER TIMOTHY A Non-Executive Director Large shareholder
Transaction date
Purchase
Price
17.10
Quantity 87,500 +2.1%
Value US$1,496,250
1.4
MCGUIRE TERRANCE Non-Executive Director
Transaction date
Sale
Price
17.10
Quantity 500,000 -46.6%
Value US$8,550,000
3.4
SPRINGER TIMOTHY A Non-Executive Director Large shareholder
Transaction date
Purchase
Price
50.00
Quantity 660,000 +212.8%
Value US$33,000,000
3.4
SPRINGER TIMOTHY A Non-Executive Director Large shareholder
Transaction date
Purchase
Price
54.14
Quantity 129,294 +3.2%
Value US$6,999,977
3.3
Lochner Daniel Chief Financial Officer Officer
Transaction date
Purchase
Price
54.14
Quantity 4,617 +inf%
Value US$249,964
3.4
SPRINGER TIMOTHY A Non-Executive Director Large shareholder
Transaction date
Purchase
Price
33.59
Quantity 300,000 +7.9%
Value US$10,077,000
3.4
SPRINGER TIMOTHY A Non-Executive Director Large shareholder
Transaction date
Purchase
Price
30.87
Quantity 2,400 +0.1%
Value US$74,088
3.4
SPRINGER TIMOTHY A Non-Executive Director Large shareholder
Transaction date
Purchase
Price
30.10
Quantity 4,070 +0.1%
Value US$122,507
3.4
SPRINGER TIMOTHY A Non-Executive Director Large shareholder
Transaction date
Purchase
Price
29.13
Quantity 18,999 +0.5%
Value US$553,441
3.4
SPRINGER TIMOTHY A Non-Executive Director Large shareholder
Transaction date
Purchase
Price
28.16
Quantity 24,531 +0.7%
Value US$690,793
2.9
Leonard Braden Michael Large shareholder
Transaction date
Purchase
Price
1.30
Quantity 296,882 +6.6%
Value US$385,947
2.9
Leonard Braden Michael Large shareholder
Transaction date
Purchase
Price
1.26
Quantity 216,053 +5.1%
Value US$272,227
2.9
Leonard Braden Michael Large shareholder
Transaction date
Purchase
Price
1.24
Quantity 253,700 +6.3%
Value US$313,320
Petersen Deanna M Officer Officer
Transaction date
Proposed sale
Price
1.38
Quantity 128,648
Value US$177,534
Geoff MacKay Former CEO
Transaction date
Proposed sale
Price
1.18
Quantity 146,927
Value US$173,374
Geoff MacKay Former CEO
Transaction date
Proposed sale
Price
1.11
Quantity 7,152
Value US$7,939
Geoff MacKay Former CEO
Transaction date
Proposed sale
Price
1.22
Quantity 186,841
Value US$227,946
Geoff MacKay Former CEO
Transaction date
Proposed sale
Price
196.21
Quantity 292,215
Value US$57,336,601
1.3
Donenberg Phillip B. Non-Executive Director
Transaction date
Purchase
Price
11.71
Quantity 2,000 +inf%
Value US$23,420
MACKAY GEOFFREY See Remarks Executive Director
Transaction date
Planned sale
Price
29.07
Quantity 1,400 -0.4%
Value US$40,692
PAIGE CHRISTOPHER Non-Executive Director
Transaction date
Planned sale
Price
28.00
Quantity 15,000 -5.6%
Value US$420,000
MACKAY GEOFFREY See Remarks Executive Director
Transaction date
Planned sale
Price
28.10
Quantity 18,404 -5.0%
Value US$517,099
MACKAY GEOFFREY See Remarks Executive Director
Transaction date
Planned sale
Price
27.36
Quantity 44,596 -10.9%
Value US$1,219,982
PAIGE CHRISTOPHER
Transaction date
Planned sale
Price
23.00
Quantity 10,000 -3.6%
Value US$230,000
3.4
Booth Bruce
Transaction date
Purchase
Price
18.50
Quantity 810,811 +17.0%
Value US$15,000,004
PAIGE CHRISTOPHER
Transaction date
Planned sale
Price
26.92
Quantity 100 -0.0%
Value US$2,692
PAIGE CHRISTOPHER
Transaction date
Planned sale
Price
25.84
Quantity 2,400 -0.9%
Value US$62,021
MACKAY GEOFFREY See Remarks Executive Director
Transaction date
Planned sale
Price
27.07
Quantity 698 -0.2%
Value US$18,893
PAIGE CHRISTOPHER
Transaction date
Planned sale
Price
26.21
Quantity 867 -0.3%
Value US$22,724
PAIGE CHRISTOPHER
Transaction date
Planned sale
Price
25.59
Quantity 6,633 -2.3%
Value US$169,759
MACKAY GEOFFREY See Remarks Executive Director
Transaction date
Planned sale
Price
27.26
Quantity 13,302 -3.1%
Value US$362,618
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-08-27 2026-08-27 PrS Proposed sale
1.4
TERRANCE MCGUIRE

Former Director

Non-Executive Director
13,506
275.48
US$2,860,347 		13,506 275.48 US$2,860,347
2026-08-26 2026-08-25 PlS Planned sale
McNamara Peter

Chief Scientific Officer

Officer
76,172 +13.9%
167.56
US$4,571,013 		76,172 +13.9% 167.56 US$4,571,013
2026-08-21 2026-08-21 PrS Proposed sale
1.4
TERRANCE MCGUIRE

Former Director

Non-Executive Director
92,899
368.69
US$194,793 		92,899 368.69 US$194,793
2026-08-14 2026-08-12 PlS Planned sale
McNamara Peter

Chief Scientific Officer

Officer
43 -0.1%
35.00
US$1,505 		43 -0.1% 35.00 US$1,505
2026-08-12 2026-08-12 PrS Proposed sale
PETER MCNAMARA

Officer

Officer
129
31.87
US$4,111 		129 31.87 US$4,111
2026-07-01 2026-06-30 PlS Planned sale
McNamara Peter

Chief Scientific Officer

Officer
172 -0.3%
35.00
US$6,020 		172 -0.3% 35.00 US$6,020
2026-06-30 2026-06-30 PrS Proposed sale
PETER MCNAMARA

Officer

Officer
172
33.09
US$5,691 		172 33.09 US$5,691
2026-05-06 2026-05-04 PlS Planned sale
Ruddy Marcella K.

Chief Medical Officer

Officer
1,065 -1.5%
30.00
US$31,950 		1,065 -1.5% 30.00 US$31,950
2026-04-03 2026-04-01 PlS Planned sale
Ruddy Marcella K.

Chief Medical Officer

Officer
1,000 -1.4%
31.05
US$31,050 		1,000 -1.4% 31.05 US$31,050
2026-03-09 2026-03-06 PlS Planned sale
Ruddy Marcella K.

Chief Medical Officer

Officer
10,000 -12.5%
30.00
US$300,000 		10,000 -12.5% 30.00 US$300,000
2026-03-09 2026-03-06 PlS Planned sale
McNamara Peter

Chief Scientific Officer

Officer
215 -0.4%
35.00
US$7,525 		215 -0.4% 35.00 US$7,525
2026-03-09 2026-03-06 PlS Planned sale
McNamara Peter

Chief Scientific Officer

Officer
6,047 -9.8%
30.00
US$181,410 		6,047 -9.8% 30.00 US$181,410
2026-03-06 2026-03-06 PrS Proposed sale
PETER MCNAMARA

Officer

Officer
6,262
27.85
US$174,397 		6,262 27.85 US$174,397
2026-03-06 2026-03-06 PrS Proposed sale
MARCELLA RUDDY

Officer

Officer
12,065
27.85
US$336,010 		12,065 27.85 US$336,010
2026-03-05 2026-03-04 PlS Planned sale
McNamara Peter

Chief Scientific Officer

Officer
1,650 -2.7%
25.00
US$41,250 		1,650 -2.7% 25.00 US$41,250
2026-03-04 2026-03-04 PrS Proposed sale
PETER MCNAMARA

Officer

Officer
1,650
24.40
US$40,252 		1,650 24.40 US$40,252
2026-03-05 2026-03-03 PlS Planned sale
McNamara Peter

Chief Scientific Officer

Officer
1,649 -4.2%
22.06
US$36,377 		1,649 -4.2% 22.06 US$36,377
2026-03-03 2026-03-03 PrS Proposed sale
PETER MCNAMARA

Officer

Officer
1,649
23.00
US$37,927 		1,649 23.00 US$37,927
2026-02-12 2026-02-11 B Purchase
3.3
REICIN ALISE

Chief Executive Officer

Executive Director
2,500 +1.1%
21.10
US$52,750 		2,500 +1.1% 21.10 US$52,750
2026-02-11 2026-02-10 B Purchase
3.3
Lochner Daniel

Chief Financial Officer

Officer
6,000 +23.0%
21.61
US$129,660 		6,000 +23.0% 21.61 US$129,660
2025-04-11 2025-04-11 B Purchase
3.4
SPRINGER TIMOTHY A
Non-Executive Director Large shareholder
53,706 +3.7%
16.31
US$875,945 		53,706 +3.7% 16.31 US$875,945
2025-04-11 2025-04-11 B Purchase
3.4
SPRINGER TIMOTHY A
Non-Executive Director Large shareholder
9,478 +0.2%
16.31
US$154,586 		9,478 +0.2% 16.31 US$154,586
2025-04-11 2025-04-10 B Purchase
3.4
SPRINGER TIMOTHY A
Non-Executive Director Large shareholder
45,858 +3.3%
16.73
US$767,204 		45,858 +3.3% 16.73 US$767,204
2025-04-11 2025-04-10 B Purchase
3.4
SPRINGER TIMOTHY A
Non-Executive Director Large shareholder
8,092 +0.2%
16.73
US$135,379 		8,092 +0.2% 16.73 US$135,379
2025-04-11 2025-04-09 B Purchase
3.4
SPRINGER TIMOTHY A
Non-Executive Director Large shareholder
4,856 +0.3%
15.23
US$73,957 		4,856 +0.3% 15.23 US$73,957
2025-04-11 2025-04-09 B Purchase
3.4
SPRINGER TIMOTHY A
Non-Executive Director Large shareholder
16,215 +1.2%
14.62
US$237,063 		16,215 +1.2% 14.62 US$237,063
2025-04-11 2025-04-09 B Purchase
3.4
SPRINGER TIMOTHY A
Non-Executive Director Large shareholder
857 +0.0%
15.23
US$13,052 		857 +0.0% 15.23 US$13,052
2025-04-11 2025-04-09 B Purchase
3.4
SPRINGER TIMOTHY A
Non-Executive Director Large shareholder
2,861 +0.1%
14.62
US$41,828 		2,861 +0.1% 14.62 US$41,828
2025-04-09 2025-04-07 B Purchase
3.4
SPRINGER TIMOTHY A
Non-Executive Director Large shareholder
412,500 +42.5%
17.10
US$7,053,750 		412,500 +42.5% 17.10 US$7,053,750
2025-04-09 2025-04-07 B Purchase
3.4
SPRINGER TIMOTHY A
Non-Executive Director Large shareholder
87,500 +2.1%
17.10
US$1,496,250 		87,500 +2.1% 17.10 US$1,496,250
2025-04-07 2025-04-07 S Sale
1.4
MCGUIRE TERRANCE
Non-Executive Director
500,000 -46.6%
17.10
US$8,550,000 		500,000 -46.6% 17.10 US$8,550,000
2025-02-07 2025-02-05 B Purchase
3.4
SPRINGER TIMOTHY A
Non-Executive Director Large shareholder
660,000 +212.8%
50.00
US$33,000,000 		660,000 +212.8% 50.00 US$33,000,000
2025-02-07 2025-02-05 B Purchase
3.4
SPRINGER TIMOTHY A
Non-Executive Director Large shareholder
129,294 +3.2%
54.14
US$6,999,977 		129,294 +3.2% 54.14 US$6,999,977
2025-02-07 2025-02-05 B Purchase
3.3
Lochner Daniel

Chief Financial Officer

Officer
4,617 +inf%
54.14
US$249,964 		4,617 +inf% 54.14 US$249,964
2024-10-24 2024-10-22 B Purchase
3.4
SPRINGER TIMOTHY A
Non-Executive Director Large shareholder
300,000 +7.9%
33.59
US$10,077,000 		300,000 +7.9% 33.59 US$10,077,000
2024-09-26 2024-09-26 B Purchase
3.4
SPRINGER TIMOTHY A
Non-Executive Director Large shareholder
2,400 +0.1%
30.87
US$74,088 		2,400 +0.1% 30.87 US$74,088
2024-09-26 2024-09-26 B Purchase
3.4
SPRINGER TIMOTHY A
Non-Executive Director Large shareholder
4,070 +0.1%
30.10
US$122,507 		4,070 +0.1% 30.10 US$122,507
2024-09-26 2024-09-26 B Purchase
3.4
SPRINGER TIMOTHY A
Non-Executive Director Large shareholder
18,999 +0.5%
29.13
US$553,441 		18,999 +0.5% 29.13 US$553,441
2024-09-26 2024-09-26 B Purchase
3.4
SPRINGER TIMOTHY A
Non-Executive Director Large shareholder
24,531 +0.7%
28.16
US$690,793 		24,531 +0.7% 28.16 US$690,793
2024-05-15 2024-05-14 B Purchase
2.9
Leonard Braden Michael
Large shareholder
296,882 +6.6%
1.30
US$385,947 		296,882 +6.6% 1.30 US$385,947
2024-05-15 2024-05-13 B Purchase
2.9
Leonard Braden Michael
Large shareholder
216,053 +5.1%
1.26
US$272,227 		216,053 +5.1% 1.26 US$272,227
2024-05-15 2024-05-13 B Purchase
2.9
Leonard Braden Michael
Large shareholder
253,700 +6.3%
1.24
US$313,320 		253,700 +6.3% 1.24 US$313,320
2023-07-14 2023-07-14 PrS Proposed sale
Petersen Deanna M

Officer

Officer
128,648
1.38
US$177,534 		128,648 1.38 US$177,534
2023-06-07 2023-06-07 PrS Proposed sale
Geoff MacKay

Former CEO
146,927
1.18
US$173,374 		146,927 1.18 US$173,374
2023-06-05 2023-06-05 PrS Proposed sale
Geoff MacKay

Former CEO
7,152
1.11
US$7,939 		7,152 1.11 US$7,939
2023-05-25 2023-05-25 PrS Proposed sale
Geoff MacKay

Former CEO
186,841
1.22
US$227,946 		186,841 1.22 US$227,946
2023-05-24 2023-05-24 PrS Proposed sale
Geoff MacKay

Former CEO
292,215
196.21
US$57,336,601 		292,215 196.21 US$57,336,601
2023-05-24 2023-05-24 PrS Proposed sale
The Mac C. MacKay Irrevocable Trust

Child of former CEO
72,604
789.72
US$57,336,601 		72,604 789.72 US$57,336,601
2023-05-24 2023-05-24 PrS Proposed sale
The Kali M MacKay Irrevocable Trust DTD 1/6/2022

Child of Former CEO
72,604
789.72
US$57,336,601 		72,604 789.72 US$57,336,601
2021-02-18 2021-02-17 B Purchase
1.3
Donenberg Phillip B.
Non-Executive Director
2,000 +inf%
11.71
US$23,420 		2,000 +inf% 11.71 US$23,420
2020-02-14 2020-02-12 PlS Planned sale
MACKAY GEOFFREY

See Remarks

Executive Director
1,400 -0.4%
29.07
US$40,692 		1,400 -0.4% 29.07 US$40,692
2020-02-11 2020-02-11 PlS Planned sale
PAIGE CHRISTOPHER
Non-Executive Director
15,000 -5.6%
28.00
US$420,000 		15,000 -5.6% 28.00 US$420,000
2020-02-11 2020-02-11 PlS Planned sale
MACKAY GEOFFREY

See Remarks

Executive Director
18,404 -5.0%
28.10
US$517,099 		18,404 -5.0% 28.10 US$517,099
2020-02-11 2020-02-11 PlS Planned sale
MACKAY GEOFFREY

See Remarks

Executive Director
44,596 -10.9%
27.36
US$1,219,982 		44,596 -10.9% 27.36 US$1,219,982
2020-01-30 2020-01-28 PlS Planned sale
PAIGE CHRISTOPHER
10,000 -3.6%
23.00
US$230,000 		10,000 -3.6% 23.00 US$230,000
2019-07-23 2019-07-19 B Purchase
3.4
Booth Bruce
810,811 +17.0%
18.50
US$15,000,004 		810,811 +17.0% 18.50 US$15,000,004
2019-07-23 2019-07-19 B Purchase
3.3
Atlas Venture Fund X, L.P.
Large shareholder
810,811 +17.0%
18.50
US$15,000,004 		810,811 +17.0% 18.50 US$15,000,004
2019-04-09 2019-04-08 PlS Planned sale
PAIGE CHRISTOPHER
100 -0.0%
26.92
US$2,692 		100 -0.0% 26.92 US$2,692
2019-04-09 2019-04-08 PlS Planned sale
PAIGE CHRISTOPHER
2,400 -0.9%
25.84
US$62,021 		2,400 -0.9% 25.84 US$62,021
2019-04-09 2019-04-08 PlS Planned sale
MACKAY GEOFFREY

See Remarks

Executive Director
698 -0.2%
27.07
US$18,893 		698 -0.2% 27.07 US$18,893
2019-04-09 2019-04-05 PlS Planned sale
PAIGE CHRISTOPHER
867 -0.3%
26.21
US$22,724 		867 -0.3% 26.21 US$22,724
2019-04-09 2019-04-05 PlS Planned sale
PAIGE CHRISTOPHER
6,633 -2.3%
25.59
US$169,759 		6,633 -2.3% 25.59 US$169,759
2019-04-09 2019-04-05 PlS Planned sale
MACKAY GEOFFREY

See Remarks

Executive Director
13,302 -3.1%
27.26
US$362,618 		13,302 -3.1% 27.26 US$362,618
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