Form 4
Compensation award
Tax / Compensation Filing
2026-09-09
KLRA insider Form 4 filed for equity award, exercise, or tax withholding
Nicholson Nur (Chief Technology Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.
Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
A |
Compensation award
derivative · Stock Option (right to buy)
|
220,000 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: Nicholson Nur (Chief Technology Officer)
Form 4
Compensation award
Tax / Compensation Filing
2026-07-08
KLRA insider Form 4 filed for equity award, exercise, or tax withholding
Tregoning Kathleen (See Remarks) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.
Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
A |
Compensation award
derivative · Stock Option (right to buy)
|
175,000 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: Tregoning Kathleen (See Remarks)
Form 4
Option exercise
Tax / Compensation Filing
2026-06-11
KLRA insider Form 4 filed for equity award, exercise, or tax withholding
Renaud Ronald C JR (Director, CEO & President) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.
The insider converted options into shares. The exercise price was fixed when the options were granted, so the timing usually tracks an expiry schedule.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
M |
Option exercise
|
38,094 |
$5.25 |
$200.0K |
M |
Option exercise
derivative · Stock Option (right to buy)
|
38,094 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: Renaud Ronald C JR (Director, CEO & President)
Shares: 38,094
Form 4
Open-market purchase
Insider Buying
2026-04-22
KLRA insider RTW INVESTMENTS, LP (10% Owner) bought 500,000 shares (~$8.00M)
RTW INVESTMENTS, LP, listed as 10% Owner at Kailera Therapeutics, Inc., reported an open-market purchase of 500,000 KLRA shares in a Form 4 filing. Insider buying is often treated as a bullish signal because company insiders are committing their own capital.
The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
C |
Derivative conversion
|
10,276,820 |
— |
— |
P |
Open-market purchase
|
500,000 |
$16.00 |
$8.00M |
C |
Derivative conversion
derivative · Series A Preferred Stock
|
8,250,000 |
— |
— |
C |
Derivative conversion
derivative · Series B Preferred Stock
|
2,026,820 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: RTW INVESTMENTS, LP (10% Owner)
Shares: 500,000
Est. Value: $8.00M
Form 4
Derivative conversion
Tax / Compensation Filing
2026-04-22
KLRA insider Form 4 filed for equity award, exercise, or tax withholding
Jiangsu Hengrui Pharmaceuticals Co., Ltd. (10% Owner) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.
A derivative security was converted into common stock under terms agreed earlier.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
C |
Derivative conversion
|
9,477,719 |
— |
— |
C |
Derivative conversion
|
2,034,133 |
— |
— |
C |
Derivative conversion
derivative · Series A-2 convertible preferred stock
|
4,968,789 |
— |
— |
C |
Derivative conversion
derivative · Series A-2 convertible non-voting preferred stock
|
708,814 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: Jiangsu Hengrui Pharmaceuticals Co., Ltd. (10% Owner)
Shares: 11,511,852
Form 4
Open-market purchase
Insider Buying
2026-04-20
KLRA insider BAIN CAPITAL INVESTORS LLC (10% Owner) bought 8,398,438 shares (~$134.38M)
BAIN CAPITAL INVESTORS LLC, listed as 10% Owner at Kailera Therapeutics, Inc., reported an open-market purchase of 8,398,438 KLRA shares in a Form 4 filing. Insider buying is often treated as a bullish signal because company insiders are committing their own capital.
The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
C |
Derivative conversion
|
17,857,143 |
— |
— |
P |
Open-market purchase
|
8,398,438 |
$16.00 |
$134.38M |
C |
Derivative conversion
derivative · Series B Preferred Stock
|
17,857,143 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: BAIN CAPITAL INVESTORS LLC (10% Owner)
Shares: 8,398,438
Est. Value: $134.38M
Form 4
Open-market purchase
Insider Buying
2026-04-20
KLRA insider Koppel Adam (Director, 10% Owner) bought 1,562,500 shares (~$25.00M)
Koppel Adam, listed as Director, 10% Owner at Kailera Therapeutics, Inc., reported an open-market purchase of 1,562,500 KLRA shares in a Form 4 filing. Insider buying is often treated as a bullish signal because company insiders are committing their own capital.
The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
C |
Derivative conversion
|
16,875,000 |
— |
— |
C |
Derivative conversion
|
4,145,768 |
— |
— |
P |
Open-market purchase
|
1,562,500 |
$16.00 |
$25.00M |
C |
Derivative conversion
derivative · Series A-1 Preferred Stock
|
16,875,000 |
— |
— |
C |
Derivative conversion
derivative · Series B Preferred Stock
|
4,145,768 |
— |
— |
A |
Compensation award
derivative · Stock Option (right to buy)
|
38,300 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: Koppel Adam (Director, 10% Owner)
Shares: 1,562,500
Est. Value: $25.00M
Form 4
Open-market purchase
Insider Buying
2026-04-20
KLRA insider Bain Capital Life Sciences Investors, LLC (10% Owner) bought 1,562,500 shares (~$25.00M)
Bain Capital Life Sciences Investors, LLC, listed as 10% Owner at Kailera Therapeutics, Inc., reported an open-market purchase of 1,562,500 KLRA shares in a Form 4 filing. Insider buying is often treated as a bullish signal because company insiders are committing their own capital.
The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
C |
Derivative conversion
|
16,875,000 |
— |
— |
C |
Derivative conversion
|
4,145,768 |
— |
— |
P |
Open-market purchase
|
1,562,500 |
$16.00 |
$25.00M |
C |
Derivative conversion
derivative · Series A-1 Preferred Stock
|
16,875,000 |
— |
— |
C |
Derivative conversion
derivative · Series B Preferred Stock
|
4,145,768 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: Bain Capital Life Sciences Investors, LLC (10% Owner)
Shares: 1,562,500
Est. Value: $25.00M
Form 4
Open-market purchase
Insider Buying
2026-04-20
KLRA insider Kaplan Andrew T. (Director, 10% Owner) bought 8,398,438 shares (~$134.38M)
Kaplan Andrew T., listed as Director, 10% Owner at Kailera Therapeutics, Inc., reported an open-market purchase of 8,398,438 KLRA shares in a Form 4 filing. Insider buying is often treated as a bullish signal because company insiders are committing their own capital.
The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
C |
Derivative conversion
|
17,857,143 |
— |
— |
P |
Open-market purchase
|
8,398,438 |
$16.00 |
$134.38M |
C |
Derivative conversion
derivative · Series B Preferred Stock
|
17,857,143 |
— |
— |
A |
Compensation award
derivative · Stock Option (right to buy)
|
38,300 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: Kaplan Andrew T. (Director, 10% Owner)
Shares: 8,398,438
Est. Value: $134.38M
Form 4
Compensation award
Tax / Compensation Filing
2026-04-20
KLRA insider Form 4 filed for equity award, exercise, or tax withholding
Cloghessy Paula (Chief People Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.
Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
A |
Compensation award
derivative · Stock Option (right to buy)
|
60,000 |
— |
— |
A |
Compensation award
derivative · Stock Option (right to buy)
|
60,000 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: Cloghessy Paula (Chief People Officer)
Form 4
Compensation award
Tax / Compensation Filing
2026-04-20
KLRA insider Form 4 filed for equity award, exercise, or tax withholding
Akamine Scott (Chief Legal Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.
Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
A |
Compensation award
derivative · Stock Option (right to buy)
|
60,000 |
— |
— |
A |
Compensation award
derivative · Stock Option (right to buy)
|
60,000 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: Akamine Scott (Chief Legal Officer)
Form 4
Compensation award
Tax / Compensation Filing
2026-04-20
KLRA insider Form 4 filed for equity award, exercise, or tax withholding
Renaud Ronald C JR (Director, CEO & President) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.
Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
A |
Compensation award
derivative · Stock Option (right to buy)
|
300,000 |
— |
— |
A |
Compensation award
derivative · Stock Option (right to buy)
|
300,000 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: Renaud Ronald C JR (Director, CEO & President)
Form 4
Compensation award
Tax / Compensation Filing
2026-04-20
KLRA insider Form 4 filed for equity award, exercise, or tax withholding
Burgess Paul D. (See Remarks) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.
Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
A |
Compensation award
derivative · Stock Option (right to buy)
|
100,000 |
— |
— |
A |
Compensation award
derivative · Stock Option (right to buy)
|
100,000 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: Burgess Paul D. (See Remarks)
Form 4
Compensation award
Tax / Compensation Filing
2026-04-20
KLRA insider Form 4 filed for equity award, exercise, or tax withholding
MILLIGAN JOHN F (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.
Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
A |
Compensation award
derivative · Stock Option (right to buy)
|
38,300 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: MILLIGAN JOHN F (Director)
Form 4
Compensation award
Tax / Compensation Filing
2026-04-20
KLRA insider Form 4 filed for equity award, exercise, or tax withholding
Coleman Jamie Beth (Chief Commercial Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.
Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
A |
Compensation award
derivative · Stock Option (right to buy)
|
75,000 |
— |
— |
A |
Compensation award
derivative · Stock Option (right to buy)
|
75,000 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: Coleman Jamie Beth (Chief Commercial Officer)
Form 4
Compensation award
Tax / Compensation Filing
2026-04-20
KLRA insider Form 4 filed for equity award, exercise, or tax withholding
MACKAY MARTIN (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.
Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
A |
Compensation award
derivative · Stock Option (right to buy)
|
38,300 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: MACKAY MARTIN (Director)