Insider · CIK 0001856078

DeLong Mark Jeffrey

Reports to the SEC for 1 company · WALTHAM, MA

sec.gov

Transactions

Companies

Filings

CIK

0001856078

Forms 4 and 5

Insider transactions

50 trades

Date	Company	Role	Code	Shares	Price	Value	Shares after
2026-05-14	APLSApellis Pharmaceuticals, Inc.U Disposition from Tender	Chief Business & Strat Officer	UDisposition from Tender	−115K sh	—	—	0
2026-05-14	APLSApellis Pharmaceuticals, Inc.A Award	Chief Business & Strat Officer	AAward	+41.3K sh	—	—	41,250
2026-05-14	APLSApellis Pharmaceuticals, Inc.D Disposition to Issuer	Chief Business & Strat Officer	DDisposition to Issuer	−41.3K sh	—	—	0
2026-05-14	APLSApellis Pharmaceuticals, Inc.A Award	Chief Business & Strat Officer	AAward	+19K sh	—	—	19,006
2026-05-14	APLSApellis Pharmaceuticals, Inc.D Disposition to Issuer	Chief Business & Strat Officer	DDisposition to Issuer	−19K sh	—	—	0
2026-05-14	APLSApellis Pharmaceuticals, Inc.A Award	Chief Business & Strat Officer	AAward	+36.6K sh	—	—	36,606
2026-05-14	APLSApellis Pharmaceuticals, Inc.D Disposition to Issuer	Chief Business & Strat Officer	DDisposition to Issuer	−36.6K sh	—	—	0
2026-05-14	APLSApellis Pharmaceuticals, Inc.A Award	Chief Business & Strat Officer	AAward	+18.3K sh	—	—	18,303
2026-05-14	APLSApellis Pharmaceuticals, Inc.D Disposition to Issuer	Chief Business & Strat Officer	DDisposition to Issuer	−18.3K sh	—	—	0
2026-05-14	APLSApellis Pharmaceuticals, Inc.D Disposition to Issuer	Chief Business & Strat Officer	DDisposition to Issuer	−36.6K sh	—	—	0
2026-05-14	APLSApellis Pharmaceuticals, Inc.D Disposition to Issuer	Chief Business & Strat Officer	DDisposition to Issuer	−4,909 sh	—	—	0
2026-05-14	APLSApellis Pharmaceuticals, Inc.D Disposition to Issuer	Chief Business & Strat Officer	DDisposition to Issuer	−8,482 sh	—	—	0
2026-05-14	APLSApellis Pharmaceuticals, Inc.D Disposition to Issuer	Chief Business & Strat Officer	DDisposition to Issuer	−21.4K sh	—	—	0
2026-05-14	APLSApellis Pharmaceuticals, Inc. · Stock Option (right to buy)D Disposition to Issuer	Chief Business & Strat Officer	DDisposition to Issuer	−82.5K sh	—	—	0
2026-05-14	APLSApellis Pharmaceuticals, Inc. · Stock Option (right to buy)D Disposition to Issuer	Chief Business & Strat Officer	DDisposition to Issuer	−14.8K sh	—	—	0
2026-05-14	APLSApellis Pharmaceuticals, Inc. · Stock Option (right to buy)D Disposition to Issuer	Chief Business & Strat Officer	DDisposition to Issuer	−27.2K sh	—	—	0
2026-05-14	APLSApellis Pharmaceuticals, Inc. · Stock Option (right to buy)D Disposition to Issuer	Chief Business & Strat Officer	DDisposition to Issuer	−18.8K sh	—	—	0
2026-05-14	APLSApellis Pharmaceuticals, Inc. · Stock Option (right to buy)D Disposition to Issuer	Chief Business & Strat Officer	DDisposition to Issuer	−30K sh	—	—	0
2026-05-14	APLSApellis Pharmaceuticals, Inc. · Stock Option (right to buy)D Disposition to Issuer	Chief Business & Strat Officer	DDisposition to Issuer	−6,952 sh	—	—	0
2026-05-14	APLSApellis Pharmaceuticals, Inc. · Stock Option (right to buy)D Disposition to Issuer	Chief Business & Strat Officer	DDisposition to Issuer	−30.8K sh	—	—	0
2026-05-14	APLSApellis Pharmaceuticals, Inc. · Stock Option (right to buy)D Disposition to Issuer	Chief Business & Strat Officer	DDisposition to Issuer	−24.7K sh	—	—	0
2026-02-11	APLSApellis Pharmaceuticals, Inc.S Sale	Chief Business & Strat Officer	SSale	−368 sh	$22.15	−$8,152.562	114,591
2026-01-28	APLSApellis Pharmaceuticals, Inc.A Award	Chief Business & Strat Officer	AAward	+36.6K sh	—	—	114,959
2026-01-22	APLSApellis Pharmaceuticals, Inc.S Sale	Chief Business & Strat Officer	SSale	−3,371 sh	$21.77	−$73.4K	78,353
2026-01-20	APLSApellis Pharmaceuticals, Inc.S Sale	Chief Business & Strat Officer	SSale	−1,334 sh	$19.79	−$26.4K	81,724
2026-01-13	APLSApellis Pharmaceuticals, Inc.S Sale	Chief Business & Strat Officer	SSale	−1,780 sh	$22.19	−$39.5K	83,058
2025-06-09	APLSApellis Pharmaceuticals, Inc. · Stock Option (Right to Buy)A Award	Chief Business & Strat Officer	AAward	+82.5K sh	$19.39	+$1.6M	82,500
2025-02-11	APLSApellis Pharmaceuticals, Inc.S Sale	Chief Business & Strat Officer	SSale	−363 sh	$28.54	−$10.4K	83,945
2025-01-29	APLSApellis Pharmaceuticals, Inc.S Sale	Chief Business & Strat Officer	SSale	−365 sh	$29.52	−$10.8K	84,308
2025-01-22	APLSApellis Pharmaceuticals, Inc.S Sale	Chief Business & Strat Officer	SSale	−1,396 sh	$30.43	−$42.5K	84,673
2025-01-21	APLSApellis Pharmaceuticals, Inc.A Award	Chief Business & Strat Officer	AAward	+28.5K sh	—	—	86,069
2025-01-17	APLSApellis Pharmaceuticals, Inc.S Sale	Chief Business & Strat Officer	SSale	−1,235 sh	$29.96	−$37K	57,561
2025-01-13	APLSApellis Pharmaceuticals, Inc.S Sale	Chief Business & Strat Officer	SSale	−1,599 sh	$28.70	−$45.9K	58,796
2024-08-12	APLSApellis Pharmaceuticals, Inc.M Exercise/Conversion	Chief Business & Strat Officer	MExercise/Conversion	+5,201 sh	$13.85	+$72K	60,395
2024-08-12	APLSApellis Pharmaceuticals, Inc. · Stock Option (Right to Buy)M Exercise/Conversion	Chief Business & Strat Officer	MExercise/Conversion	−5,201 sh	—	—	14,799
2024-03-18	APLSApellis Pharmaceuticals, Inc.S Sale	Chief Business & Strat Officer	SSale	−9,913 sh	$56.90	−$564K	54,693
2024-02-12	APLSApellis Pharmaceuticals, Inc.S Sale	Chief Business & Strat Officer	SSale	−597 sh	$67.77	−$40.5K	64,606
2024-01-29	APLSApellis Pharmaceuticals, Inc.S Sale	Chief Business & Strat Officer	SSale	−367 sh	$64.14	−$23.5K	65,203
2024-01-22	APLSApellis Pharmaceuticals, Inc.S Sale	Chief Business & Strat Officer	SSale	−1,384 sh	$65.00	−$90K	65,570
2024-01-16	APLSApellis Pharmaceuticals, Inc.A Award	Chief Business & Strat Officer	AAward	+17K sh	—	—	68,585
2024-01-16	APLSApellis Pharmaceuticals, Inc.S Sale	Chief Business & Strat Officer	SSale	−1,631 sh	$66.81	−$109K	66,954
2024-01-16	APLSApellis Pharmaceuticals, Inc. · Stock Option (Right to Buy)A Award	Chief Business & Strat Officer	AAward	+24.7K sh	$66.30	+$1.64M	24,666
2023-10-23	APLSApellis Pharmaceuticals, Inc.S Sale	Chief Business & Strat Officer	SSale	−131 sh	$46.04	−$6,030.742	51,622
2023-02-21	APLSApellis Pharmaceuticals, Inc.A Award	Chief Business & Strat Officer	AAward	+5,280 sh	—	—	51,782
2023-02-21	APLSApellis Pharmaceuticals, Inc.F Tax Payment	Chief Business & Strat Officer	FTax Payment	−441 sh	$58.50	−$25.8K	51,341
2023-02-21	APLSApellis Pharmaceuticals, Inc. · Stock Option (Right to Buy)A Award	Chief Business & Strat Officer	AAward	+7,489 sh	—	—	7,489
2023-02-10	APLSApellis Pharmaceuticals, Inc.F Tax Payment	Chief Business & Strat Officer	FTax Payment	−670 sh	$51.21	−$34.3K	46,502
2023-01-27	APLSApellis Pharmaceuticals, Inc.F Tax Payment	Chief Business & Strat Officer	FTax Payment	−367 sh	$52.77	−$19.4K	47,172
2023-01-20	APLSApellis Pharmaceuticals, Inc.F Tax Payment	Chief Business & Strat Officer	FTax Payment	−1,149 sh	$52.05	−$59.8K	47,539
2023-01-12	APLSApellis Pharmaceuticals, Inc.A Award	Chief Business & Strat Officer	AAward	+19.6K sh	—	—	48,688

Recent filings

Accepted (ET)
May 144
DeLong Mark Jeffrey0001193125-26-224597
SEC(opens sec.gov)

Companies

Apellis Pharmaceuticals, Inc.Chief Business & Strat OfficerAPLS

Address

C/O APELLIS PHARMACEUTICALS, INC. 100 FIFTH AVENUE, 3RD FLOOR

WALTHAM, MA, 02451