Key facts
- This page summarizes Michael Brian Bell's Form 4 filing for Guardant Health, Inc. (GH).
- 16 reported transactions and 2 derivative rows are listed below.
- Accepted by SEC: 08 Dec 2025, 21:37.
Michael Brian Bell - 05 Dec 2025 Form 4 Insider Report for Guardant Health, Inc. (GH)
- Reporting relationship
- Chief Financial Officer
- Issuer ticker
- GH
- Reported as of
- 05 Dec 2025
- Net transaction value
- -$6,559,954
- SEC form
- 4
- Accepted by SEC
- 08 Dec 2025, 21:37:06 UTC
- Prior SEC filing
- 02 Oct 2025
- Next SEC filing
- 17 Dec 2025
- Source filing
- View source filing
- Reporting owner signature
- /s/ John G. Saia, as attorney-in-fact for Michael Brian Bell
Source evidence
Original filing metadata and source links for verification.
5 source fields
Reporting owner
1 detail
Key filing fact
Michael Brian Bell filed Form 4 for Guardant Health, Inc. (GH) on 08 Dec 2025.
Change
- Previous filing in this sequence was filed on 02 Oct 2025.
- Current net transaction value: -$6,559,954.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001702824
Primary reporting owner
Bell Michael Brian
- Relationship
- Chief Financial Officer
- Address
- 3100 HANOVER STREET, PALO ALTO
- Signature
- /s/ John G. Saia, as attorney-in-fact for Michael Brian Bell
- Signature date
- 08 Dec 2025
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
GH
transaction
Common Stock
Options Exercise
- Transaction value
- $965,493
- Shares
- +29,382
- Change %
- +56%
- Price
- $32.86
- Shares after
- 81,509
- Date
- 05 Dec 2025
- Ownership
- Direct
GH
transaction
Common Stock
Options Exercise
- Transaction value
- $763,295
- Shares
- +26,905
- Change %
- +33%
- Price
- $28.37
- Shares after
- 108,414
- Date
- 05 Dec 2025
- Ownership
- Direct
GH
transaction
Common Stock
Sale
- Transaction value
- $814,736
- Shares
- -8,033
- Change %
- -7.4%
- Price
- $101.42
- Shares after
- 100,381
- Date
- 05 Dec 2025
- Ownership
- Direct
- Footnotes
- F1
GH
transaction
Common Stock
Sale
- Transaction value
- $2,337,302
- Shares
- -22,891
- Change %
- -23%
- Price
- $102.11
- Shares after
- 77,490
- Date
- 05 Dec 2025
- Ownership
- Direct
- Footnotes
- F2
GH
transaction
Common Stock
Sale
- Transaction value
- $781,394
- Shares
- -7,567
- Change %
- -9.8%
- Price
- $103.26
- Shares after
- 69,923
- Date
- 05 Dec 2025
- Ownership
- Direct
- Footnotes
- F3
GH
transaction
Common Stock
Sale
- Transaction value
- $1,245,252
- Shares
- -11,978
- Change %
- -17%
- Price
- $103.96
- Shares after
- 57,945
- Date
- 05 Dec 2025
- Ownership
- Direct
- Footnotes
- F4
GH
transaction
Common Stock
Sale
- Transaction value
- $26,454
- Shares
- -250
- Change %
- -0.43%
- Price
- $105.82
- Shares after
- 57,695
- Date
- 05 Dec 2025
- Ownership
- Direct
- Footnotes
- F5
GH
transaction
Common Stock
Sale
- Transaction value
- $594,018
- Shares
- -5,568
- Change %
- -9.7%
- Price
- $106.68
- Shares after
- 52,127
- Date
- 05 Dec 2025
- Ownership
- Direct
- Footnotes
- F6
GH
transaction
Common Stock
Sale
- Transaction value
- $331,483
- Shares
- -3,267
- Change %
- -6.3%
- Price
- $101.46
- Shares after
- 48,860
- Date
- 05 Dec 2025
- Ownership
- Direct
- Footnotes
- F7
GH
transaction
Common Stock
Sale
- Transaction value
- $895,932
- Shares
- -8,774
- Change %
- -18%
- Price
- $102.11
- Shares after
- 40,086
- Date
- 05 Dec 2025
- Ownership
- Direct
- Footnotes
- F8
GH
transaction
Common Stock
Sale
- Transaction value
- $261,509
- Shares
- -2,533
- Change %
- -6.3%
- Price
- $103.24
- Shares after
- 37,553
- Date
- 05 Dec 2025
- Ownership
- Direct
- Footnotes
- F3
GH
transaction
Common Stock
Sale
- Transaction value
- $522,611
- Shares
- -5,027
- Change %
- -13%
- Price
- $103.96
- Shares after
- 32,526
- Date
- 05 Dec 2025
- Ownership
- Direct
- Footnotes
- F9
GH
transaction
Common Stock
Sale
- Transaction value
- $350,408
- Shares
- -3,284
- Change %
- -10%
- Price
- $106.70
- Shares after
- 29,242
- Date
- 05 Dec 2025
- Ownership
- Direct
- Footnotes
- F10
GH
transaction
Common Stock
Sale
- Transaction value
- $127,642
- Shares
- -1,190
- Change %
- -4.1%
- Price
- $107.26
- Shares after
- 28,052
- Date
- 05 Dec 2025
- Ownership
- Direct
- Footnotes
- F11
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
GH
transaction
Derivative
Stock Option (Right to Buy)
Options Exercise
- Transaction value
- $0
- Shares
- -29,382
- Change %
- -80%
- Price
- $0.000000
- Shares after
- 7,137
- Date
- 05 Dec 2025
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 29,382
- Exercise price
- $32.86
- Footnotes
- F12
GH
transaction
Derivative
Stock Option (Right to Buy)
Options Exercise
- Transaction value
- $0
- Shares
- -26,905
- Change %
- -72%
- Price
- $0.000000
- Shares after
- 10,421
- Date
- 05 Dec 2025
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 26,905
- Exercise price
- $28.37
- Footnotes
- F13
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 13 footnotes
Footnote F1
Represents the weighted average sales price per share. These shares were sold in multiple transactions at prices ranging from $100.715 to $101.705. The Reporting Person has provided to the Issuer, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of shares sold at each separate price within the range.
Footnote F2
Represents the weighted average sales price per share. These shares were sold in multiple transactions at prices ranging from $101.715 to $102.690. The Reporting Person has provided to the Issuer, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of shares sold at each separate price within the range.
Footnote F3
Represents the weighted average sales price per share. These shares were sold in multiple transactions at prices ranging from $102.720 to $103.710. The Reporting Person has provided to the Issuer, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of shares sold at each separate price within the range.
Footnote F4
Represents the weighted average sales price per share. These shares were sold in multiple transactions at prices ranging from $103.720 to $104.440. The Reporting Person has provided to the Issuer, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of shares sold at each separate price within the range.
Footnote F5
Represents the weighted average sales price per share. These shares were sold in multiple transactions at prices ranging from $105.415 to $106.390. The Reporting Person has provided to the Issuer, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of shares sold at each separate price within the range.
Footnote F6
Represents the weighted average sales price per share. These shares were sold in multiple transactions at prices ranging from $106.420 to $106.980. The Reporting Person has provided to the Issuer, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of shares sold at each separate price within the range.
Footnote F7
Represents the weighted average sales price per share. These shares were sold in multiple transactions at prices ranging from $100.710 to $101.700. The Reporting Person has provided to the Issuer, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of shares sold at each separate price within the range.
Footnote F8
Represents the weighted average sales price per share. These shares were sold in multiple transactions at prices ranging from $101.715 to $102.670. The Reporting Person has provided to the Issuer, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of shares sold at each separate price within the range.
Footnote F9
Represents the weighted average sales price per share. These shares were sold in multiple transactions at prices ranging from $103.720 to $104.510. The Reporting Person has provided to the Issuer, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of shares sold at each separate price within the range.
Footnote F10
Represents the weighted average sales price per share. These shares were sold in multiple transactions at prices ranging from $105.935 to $106.925. The Reporting Person has provided to the Issuer, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of shares sold at each separate price within the range.
Footnote F11
Represents the weighted average sales price per share. These shares were sold in multiple transactions at prices ranging from $107.010 to $107.390. The Reporting Person has provided to the Issuer, and undertakes to provide to the staff of the Securities and Exchange Commission or any security holder of the Issuer, upon request, full information regarding the number of shares sold at each separate price within the range.
Footnote F12
The stock option vests as to 33% of the shares subject to such award on June 9, 2024, and as to the remaining 67% of the shares subject to such award in substantially equity installments on each monthly anniversary of June 9, 2024, during the two-year period thereafter.
Footnote F13
This represents a stock option granted on December 13, 2023 that vests over a three-year period. 33% of the shares subject to such award vested on October 1, 2024 and the remaining 67% of the shares vests in equal monthly installments over the remaining two-year period thereafter.