WATSON DAVID O. (General Counsel) received a stock award from APELLIS PHARMACEUTICALS, INC.

Compensation award — not an open‑market transaction. Less informative as a directional signal.

A · 4 awards

WATSON DAVID O.

Filed: 5/14/2026ACC: 0001193125-26-224583

InsiderWATSON DAVID O.CIK 1657719

→

IssuerAPELLIS PHARMACEUTICALS, INC.CIK 1492422

Officer· General Counsel

Since Sep 2018

-620.91K

Net shares

Net seller

$0.00

Total acquired

Open market trades

0B · 0S

Total transactions

153.74K acquired · 774.65K disposed

Non-Derivative Transactions16

Common Stock

Direct

U · U

−144.52K

Price / share

—

Trade value

—

% of position

New position

5/14/2026

144.52K→0.00

Common Stock

Indirect

U · U

−10K

Price / share

—

Trade value

—

% of position

New position

5/14/2026

10K→0.00

Common Stock

Indirect

U · U

−50.14K

Price / share

—

Trade value

—

% of position

New position

5/14/2026

50.14K→0.00

Common Stock

Direct

A · Award

+41.25K

Price / share

—

Trade value

—

% of position

New position

5/14/2026

0.00→41.25K

Common Stock

Direct

D · Disposition

−41.25K

Price / share

—

Trade value

—

% of position

New position

5/14/2026

41.25K→0.00

Common Stock

Direct

A · Award

+28.51K

Price / share

—

Trade value

—

% of position

New position

5/14/2026

0.00→28.51K

Common Stock

Direct

D · Disposition

−28.51K

Price / share

—

Trade value

—

% of position

New position

5/14/2026

28.51K→0.00

Common Stock

Direct

A · Award

+27.99K

Price / share

—

Trade value

—

% of position

New position

5/14/2026

0.00→27.99K

Common Stock

Direct

D · Disposition

−27.99K

Price / share

—

Trade value

—

% of position

New position

5/14/2026

27.99K→0.00

Common Stock

Direct

A · Award

+55.99K

Price / share

—

Trade value

—

% of position

New position

5/14/2026

0.00→55.99K

Common Stock

Direct

D · Disposition

−55.99K

Price / share

—

Trade value

—

% of position

New position

5/14/2026

55.99K→0.00

Common Stock

Direct

D · Disposition

−32.07K

Price / share

—

Trade value

—

% of position

New position

5/14/2026

32.07K→0.00

Common Stock

Direct

D · Disposition

−55.99K

Price / share

—

Trade value

—

% of position

New position

5/14/2026

55.99K→0.00

Common Stock

Direct

D · Disposition

−11.87K

Price / share

—

Trade value

—

% of position

New position

5/14/2026

11.87K→0.00

Common Stock

Direct

D · Disposition

−6K

Price / share

—

Trade value

—

% of position

New position

5/14/2026

6K→0.00

Common Stock

Direct

D · Disposition

−7.36K

Price / share

—

Trade value

—

% of position

New position

5/14/2026

7.36K→0.00

Total

Net shares

−317.95K

Net value

$0.00

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	5/14/2026	U · U	−144.52K	—	—	New position	144.52K	0.00
Common Stock Indirect	5/14/2026	U · U	−10K	—	—	New position	10K	0.00
Common Stock Indirect	5/14/2026	U · U	−50.14K	—	—	New position	50.14K	0.00
Common Stock Direct	5/14/2026	A · Award	+41.25K	—	—	New position	0.00	41.25K
Common Stock Direct	5/14/2026	D · Disposition	−41.25K	—	—	New position	41.25K	0.00
Common Stock Direct	5/14/2026	A · Award	+28.51K	—	—	New position	0.00	28.51K
Common Stock Direct	5/14/2026	D · Disposition	−28.51K	—	—	New position	28.51K	0.00
Common Stock Direct	5/14/2026	A · Award	+27.99K	—	—	New position	0.00	27.99K
Common Stock Direct	5/14/2026	D · Disposition	−27.99K	—	—	New position	27.99K	0.00
Common Stock Direct	5/14/2026	A · Award	+55.99K	—	—	New position	0.00	55.99K
Common Stock Direct	5/14/2026	D · Disposition	−55.99K	—	—	New position	55.99K	0.00
Common Stock Direct	5/14/2026	D · Disposition	−32.07K	—	—	New position	32.07K	0.00
Common Stock Direct	5/14/2026	D · Disposition	−55.99K	—	—	New position	55.99K	0.00
Common Stock Direct	5/14/2026	D · Disposition	−11.87K	—	—	New position	11.87K	0.00
Common Stock Direct	5/14/2026	D · Disposition	−6K	—	—	New position	6K	0.00
Common Stock Direct	5/14/2026	D · Disposition	−7.36K	—	—	New position	7.36K	0.00
Total			−317.95K		$0.00

Derivative Transactions7

Stock Option (right to buy)

Direct

D · Disposition

Converts to

Common Stock

82.50K shares

−82.50K

Strike price

19.39

Held after

0.00

Exercisable

—

5/14/2026

Stock Option (right to buy)

Direct

D · Disposition

Converts to

Common Stock

14K shares

−14K

Strike price

14.95

Held after

0.00

Exercisable

—

5/14/2026

Stock Option (right to buy)

Direct

D · Disposition

Converts to

Common Stock

50.97K shares

−50.97K

Strike price

35.46

Held after

0.00

Exercisable

—

5/14/2026

Stock Option (right to buy)

Direct

D · Disposition

Converts to

Common Stock

38.25K shares

−38.25K

Strike price

44.33

Held after

0.00

Exercisable

—

5/14/2026

Stock Option (right to buy)

Direct

D · Disposition

Converts to

Common Stock

45K shares

−45K

Strike price

44.90

Held after

0.00

Exercisable

—

5/14/2026

Stock Option (right to buy)

Direct

D · Disposition

Converts to

Common Stock

37.71K shares

−37.71K

Strike price

52.66

Held after

0.00

Exercisable

—

5/14/2026

Stock Option (right to buy)

Direct

D · Disposition

Converts to

Common Stock

34.53K shares

−34.53K

Strike price

66.30

Held after

0.00

Exercisable

—

5/14/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable
Stock Option (right to buy) Direct	Common Stock82.50K shares	5/14/2026	D · Disposition	−82.50K	19.39	—
Stock Option (right to buy) Direct	Common Stock14K shares	5/14/2026	D · Disposition	−14K	14.95	—
Stock Option (right to buy) Direct	Common Stock50.97K shares	5/14/2026	D · Disposition	−50.97K	35.46	—
Stock Option (right to buy) Direct	Common Stock38.25K shares	5/14/2026	D · Disposition	−38.25K	44.33	—
Stock Option (right to buy) Direct	Common Stock45K shares	5/14/2026	D · Disposition	−45K	44.90	—
Stock Option (right to buy) Direct	Common Stock37.71K shares	5/14/2026	D · Disposition	−37.71K	52.66	—
Stock Option (right to buy) Direct	Common Stock34.53K shares	5/14/2026	D · Disposition	−34.53K	66.30	—