Bruce Booth - 17 Jun 2026 Form 4 Insider Report for Kymera Therapeutics, Inc. (KYMR)

Reporting relationship: Director
Issuer ticker: KYMR
Reported as of: 17 Jun 2026
Net transaction value: -$45,293,294
SEC form: 4
Accepted by SEC: 22 Jun 2026, 21:01:13 UTC
Prior SEC filing: 24 Apr 2026
Next SEC filing: 25 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Ommer Chohan, Attorney-in-Fact

Key filing fact

Bruce Booth filed Form 4 for Kymera Therapeutics, Inc. (KYMR) on 22 Jun 2026.

Key facts

This page summarizes Bruce Booth's Form 4 filing for Kymera Therapeutics, Inc. (KYMR).
31 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 22 Jun 2026, 21:01.

Change

Previous filing in this sequence was filed on 24 Apr 2026.
Current net transaction value: -$45,293,294.

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

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001451612 Primary reporting owner

Booth Bruce

Relationship: Director
Address: C/O KYMERA THERAPEUTICS, INC., 500 NORTH BEACON STREET, FLOOR 4, WATERTOWN
Signature: /s/ Ommer Chohan, Attorney-in-Fact
Signature date: 22 Jun 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

KYMR transaction

Common Stock

Options Exercise

Transaction value
Shares: +11,741
Change %
Price: $20.00^*
Shares after: 11,741
Date: 17 Jun 2026
Ownership: Direct

KYMR transaction

Common Stock

Sale

Transaction value: $1,056,455
Shares: -11,741
Change %: -100%
Price: $89.98
Shares after: 0
Date: 17 Jun 2026
Ownership: Direct
Footnotes: F1, F2

KYMR transaction

Common Stock

Sale

Transaction value: $8,330,234
Shares: -92,169
Change %: -2.4%
Price: $90.38
Shares after: 3,807,660
Date: 17 Jun 2026
Ownership: See footnote
Footnotes: F3, F4, F5

KYMR transaction

Common Stock

Sale

Transaction value: $1,166,083
Shares: -12,902
Change %: -1.9%
Price: $90.38
Shares after: 662,042
Date: 17 Jun 2026
Ownership: See footnote
Footnotes: F3, F4, F6

KYMR transaction

Common Stock

Sale

Transaction value: $5,690,921
Shares: -62,897
Change %: -1.7%
Price: $90.48
Shares after: 3,744,763
Date: 18 Jun 2026
Ownership: See footnote
Footnotes: F3, F5, F7

KYMR transaction

Common Stock

Sale

Transaction value: $2,972,174
Shares: -32,359
Change %: -0.86%
Price: $91.85
Shares after: 3,712,404
Date: 18 Jun 2026
Ownership: See footnote
Footnotes: F3, F5, F8

KYMR transaction

Common Stock

Sale

Transaction value: $522,732
Shares: -5,672
Change %: -0.15%
Price: $92.16
Shares after: 3,706,732
Date: 18 Jun 2026
Ownership: See footnote
Footnotes: F3, F5, F9

KYMR transaction

Common Stock

Sale

Transaction value: $797,038
Shares: -8,809
Change %: -1.3%
Price: $90.48
Shares after: 653,233
Date: 18 Jun 2026
Ownership: See footnote
Footnotes: F3, F6, F7

KYMR transaction

Common Stock

Sale

Transaction value: $415,713
Shares: -4,526
Change %: -0.69%
Price: $91.85
Shares after: 648,707
Date: 18 Jun 2026
Ownership: See footnote
Footnotes: F3, F6, F8

KYMR transaction

Common Stock

Sale

Transaction value: $73,083
Shares: -793
Change %: -0.12%
Price: $92.16
Shares after: 647,914
Date: 18 Jun 2026
Ownership: See footnote
Footnotes: F3, F6, F9

KYMR transaction

Common Stock

Sale

Transaction value: $1,374,821
Shares: -14,921
Change %: -0.4%
Price: $92.14
Shares after: 3,691,811
Date: 22 Jun 2026
Ownership: See footnote
Footnotes: F3, F5, F10

KYMR transaction

Common Stock

Sale

Transaction value: $192,267
Shares: -2,035
Change %: -0.06%
Price: $94.48
Shares after: 3,689,776
Date: 22 Jun 2026
Ownership: See footnote
Footnotes: F3, F5, F11

KYMR transaction

Common Stock

Sale

Transaction value: $1,120,799
Shares: -11,783
Change %: -0.32%
Price: $95.12
Shares after: 3,677,993
Date: 22 Jun 2026
Ownership: See footnote
Footnotes: F3, F5, F12

KYMR transaction

Common Stock

Sale

Transaction value: $2,011,705
Shares: -20,903
Change %: -0.57%
Price: $96.24
Shares after: 3,657,090
Date: 22 Jun 2026
Ownership: See footnote
Footnotes: F3, F5, F13

KYMR transaction

Common Stock

Sale

Transaction value: $1,571,085
Shares: -16,084
Change %: -0.44%
Price: $97.68
Shares after: 3,641,006
Date: 22 Jun 2026
Ownership: See footnote
Footnotes: F3, F5, F14

KYMR transaction

Common Stock

Sale

Transaction value: $2,560,714
Shares: -25,976
Change %: -0.71%
Price: $98.58
Shares after: 3,615,030
Date: 22 Jun 2026
Ownership: See footnote
Footnotes: F3, F5, F15

KYMR transaction

Common Stock

Sale

Transaction value: $5,221,650
Shares: -52,442
Change %: -1.5%
Price: $99.57
Shares after: 3,562,588
Date: 22 Jun 2026
Ownership: See footnote
Footnotes: F3, F5, F16

KYMR transaction

Common Stock

Sale

Transaction value: $5,644,379
Shares: -56,348
Change %: -1.6%
Price: $100.17
Shares after: 3,506,240
Date: 22 Jun 2026
Ownership: See footnote
Footnotes: F3, F5, F17

KYMR transaction

Common Stock

Sale

Transaction value: $670,321
Shares: -6,597
Change %: -0.19%
Price: $101.61
Shares after: 3,499,643
Date: 22 Jun 2026
Ownership: See footnote
Footnotes: F3, F5, F18

KYMR transaction

Common Stock

Sale

Transaction value: $921,295
Shares: -8,990
Change %: -0.26%
Price: $102.48
Shares after: 3,490,653
Date: 22 Jun 2026
Ownership: See footnote
Footnotes: F3, F5, F19

KYMR transaction

Common Stock

Sale

Transaction value: $200,773
Shares: -2,179
Change %: -0.34%
Price: $92.14
Shares after: 645,735
Date: 22 Jun 2026
Ownership: See footnote
Footnotes: F3, F6, F10

KYMR transaction

Common Stock

Sale

Transaction value: $27,021
Shares: -286
Change %: -0.04%
Price: $94.48
Shares after: 645,449
Date: 22 Jun 2026
Ownership: See footnote
Footnotes: F3, F6, F11

KYMR transaction

Common Stock

Sale

Transaction value: $156,758
Shares: -1,648
Change %: -0.26%
Price: $95.12
Shares after: 643,801
Date: 22 Jun 2026
Ownership: See footnote
Footnotes: F3, F6, F12

KYMR transaction

Common Stock

Sale

Transaction value: $280,925
Shares: -2,919
Change %: -0.45%
Price: $96.24
Shares after: 640,882
Date: 22 Jun 2026
Ownership: See footnote
Footnotes: F3, F6, F13

KYMR transaction

Common Stock

Sale

Transaction value: $219,487
Shares: -2,247
Change %: -0.35%
Price: $97.68
Shares after: 638,635
Date: 22 Jun 2026
Ownership: See footnote
Footnotes: F3, F6, F14

KYMR transaction

Common Stock

Sale

Transaction value: $355,184
Shares: -3,603
Change %: -0.56%
Price: $98.58
Shares after: 635,032
Date: 22 Jun 2026
Ownership: See footnote
Footnotes: F3, F6, F15

KYMR transaction

Common Stock

Sale

Transaction value: $728,753
Shares: -7,319
Change %: -1.2%
Price: $99.57
Shares after: 627,713
Date: 22 Jun 2026
Ownership: See footnote
Footnotes: F3, F6, F16

KYMR transaction

Common Stock

Sale

Transaction value: $789,239
Shares: -7,879
Change %: -1.3%
Price: $100.17
Shares after: 619,834
Date: 22 Jun 2026
Ownership: See footnote
Footnotes: F3, F6, F17

KYMR transaction

Common Stock

Sale

Transaction value: $93,278
Shares: -918
Change %: -0.15%
Price: $101.61
Shares after: 618,916
Date: 22 Jun 2026
Ownership: See footnote
Footnotes: F3, F6, F18

KYMR transaction

Common Stock

Sale

Transaction value: $128,407
Shares: -1,253
Change %: -0.2%
Price: $102.48
Shares after: 617,663
Date: 22 Jun 2026
Ownership: See footnote
Footnotes: F3, F6, F19

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

KYMR transaction Derivative

Stock Option (Right to Buy)

Options Exercise

Transaction value
Shares: -11,741
Change %: -29%
Price: $0.000000^*
Shares after: 28,127
Date: 17 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 11,741
Exercise price: $20.00
Footnotes: F20

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 20 footnotes

Footnote F1

This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 16, 2025.

Footnote F2

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $89.95 to $90.20 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold each separate price within the ranges set forth in footnotes (2), (4) and (7) through (19).

Footnote F3

This transaction was made pursuant to a Rule 10b5-1 trading plan adopted by Atlas Venture Fund X, L.P. and Atlas Venture Opportunity Fund I, L.P. on December 11, 2025.

Footnote F4

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $90.05 to $91.03 inclusive.

Footnote F5

These shares are held directly by Atlas Venture Fund X, L.P. ("Atlas Venture Fund X"). The general partner of Atlas Venture Fund X is Atlas Venture Associates X, L.P. ("AVA X LP"). Atlas Venture Associates X, LLC ("AVA X LLC") is the general partner of AVA X LP. The Reporting Person is a member of AVA X LLC and disclaims Section 16 beneficial ownership of the securities held by Atlas Venture Fund X, except to the extent of his pecuniary interest therein, if any.

Footnote F6

The shares are owned directly by Atlas Venture Opportunity Fund I, L.P. ("AVOF"). Atlas Venture Associates Opportunity I, L.P. ("AVAO LP") is the general partner of AVOF. Atlas Venture Associates Opportunity I, LLC ("AVAO LLC") is the general partner of AVAO LP. The Reporting Person is a member of AVAO LLC and disclaims Section 16 beneficial ownership of such securities held by AVOF, except to the extent of his pecuniary interest therein, if any.

Footnote F7

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $90.05 to $91.04 inclusive.

Footnote F8

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $91.10 to $92.085 inclusive.

Footnote F9

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $92.1191 to $92.2833 inclusive.

Footnote F10

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $92.11 to $92.50 inclusive.

Footnote F11

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $93.93 to $94.91 inclusive.

Footnote F12

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $94.99 to $95.76 inclusive.

Footnote F13

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $96.00 to $96.959 inclusive.

Footnote F14

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $97.0018 to $97.99 inclusive.

Footnote F15

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $98.00 to $98.9997 inclusive.

Footnote F16

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $99.00 to $99.9942 inclusive.

Footnote F17

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $100.00 to $100.8925 inclusive.

Footnote F18

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $101.00 to $101.98 inclusive.

Footnote F19

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $102.01 to $103.00 inclusive.

Footnote F20

Fully vested and exercisable.

SEC remarks

Due to the 30 line limitation in Table I, this report is being filed across two forms. This is the first of two filings.