Terrance McGuire

Insider Reports History

Identity Names, identifiers, and filing context for this profile. 1 identity field
Reporting-owner location
Waltham, MA
SEC source record Original filing metadata and source links for verification. 1 source field
Latest reporting-owner signature
/s/ David Horn, by power of attorney
Source: Latest parsed Forms 3/4/5 signature
Source evidence Original filing metadata and source links for verification. 1 source field
Transaction source note
Rows are grouped by transaction date from the original SEC filing. Open the aggregated insider activity page to review issuer-level activity across dates.

Reported holdings for Terrance McGuire

Form 4 holding Director, 10%+ Owner

Alector, Inc.

Security class
Common Stock
Shares / value
10,853,817
Estimated value
$60,347,223
Report date
11 Sep 2023
Price
$5.56
Ownership
Indirect
Form 4 holding Director

Tectonic Therapeutic, Inc.

Security class
Common Stock
Shares / value
573,062
Estimated value
$9,799,360
Report date
07 Apr 2025
Price
$17.10
Ownership
Indirect
Form 4 holding Director

Invivyd, Inc.

Security class
Common Stock
Shares / value
3,066,757
Estimated value
$1,366,240
Report date
31 Dec 2024
Price
$0.4455
Ownership
Indirect
Form 4 holding Director, 10%+ Owner

Alector, Inc.

Security class
Common Stock
Shares / value
54,996
Estimated value
$305,778
Report date
11 Sep 2023
Price
$5.56
Ownership
Direct
Form 4 holding Director

Cyclerion Therapeutics, Inc.

Security class
Common Stock
Shares / value
34,866
Estimated value
$118,370
Report date
30 Nov 2023
Price
$3.40
Ownership
By Polaris Partners VIII, L.P
Form 4 holding Director

Cyclerion Therapeutics, Inc.

Security class
Common Stock
Shares / value
1,247
Estimated value
$4,234
Report date
30 Nov 2023
Price
$3.40
Ownership
By Polaris Entrepreneurs 'Fund VIII, L.P.
Form 4 holding Director

Cyclerion Therapeutics, Inc.

Security class
Common Stock
Shares / value
345
Estimated value
$1,171
Report date
30 Nov 2023
Price
$3.40
Ownership
By Bartlett Partners, LLC
Form 4 holding Director

Invivyd, Inc.

Security class
Stock Option (Right to Buy)
Shares / value
50,000
Estimated value
Report date
19 May 2026
Price
Ownership
Direct
Underlying class
Common Stock
Underlying amount
Form 4 holding Director

Seer, Inc.

Security class
Stock Option (right to buy)
Shares / value
25,000
Estimated value
Report date
28 Jul 2026
Price
Ownership
Direct
Underlying class
Class A Common Stock
Underlying amount
Form 4 holding Director

Seer, Inc.

Security class
Class B Common Stock
Shares / value
0
Estimated value
Report date
09 Dec 2025
Price
Ownership
Indirect
Underlying class
Class A Common Stock
Underlying amount

Insider Reports Filed by Terrance McGuire

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