Annexon, Inc.

For the period ended Sep 30, 2026. Filed Nov 9, 2026.

About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Sep 30, 2026 · Filed Nov 9, 2026

ANNX$4.21-0.5%Stored close · as of Nov 10, 2026

Extracted filing text, with the paragraph anchors used by the comparison.

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Contents

Condensed Consolidated Statements of Stockholders’ Equity

(in thousands, except share amounts)

Common Stock · AdditionalPaid-In · Accumulated OtherComprehensive · Accumulated · TotalStockholders’
	Shares	Cost	Capital	Loss	Deficit	Equity
Balances as of December 31, 2025	149,362,800	$149	$1,128,917	$(29)	$(917,389)	$211,648
Exercise of stock options	61,306	—	229	—	—	229
Restricted stock vested in the period	501,341	—	—	—	—	—
Issuance of common stock, net of issuance costs $909	6,049,762	6	32,688	—	—	32,694
Exercise of pre-funded warrants	6,526,508	7	(7)	—	—	—
Stock-based compensation	—	—	4,156	—	—	4,156
Other comprehensive loss	—	—	—	(52)	—	(52)
Net loss	—	—	—	—	(44,142)	(44,142)
Balances as of March 31, 2026	162,501,717	162	1,165,983	(81)	(961,531)	204,533
Exercise of stock options	179,664	1	563	—	—	564
Issuance of common stock, net of issuance costs $1,150	5,734,361	6	31,007	—	—	31,013
Exercise of pre-funded warrants	5,998,871	6	(6)	—	—	—
Issuance of common stock per Employee Stock Purchase Plan purchase	189,585	—	487	—	—	487
Stock-based compensation	—	—	4,813	—	—	4,813
Other comprehensive loss	—	—	—	(1)	—	(1)
Net loss	—	—	—	—	(55,348)	(55,348)
Balances as of June 30, 2026	174,604,198	175	1,202,847	(82)	(1,016,879)	186,061
Exercise of stock options	105,137	—	398	—	—	398
Issuance of common stock, net of issuance costs $103	485,754	—	2,516	—	—	2,516
Exercise of pre-funded warrants	14,897,630	15	(15)	—	—	—
Stock-based compensation	—	—	5,110	—	—	5,110
Other comprehensive loss	—	—	—	(72)	—	(72)
Net loss	—	—	—	—	(51,218)	(51,218)
Balances as of September 30, 2026	190,092,719	$190	$1,210,856	$(154)	$(1,068,097)	$142,795

Condensed Consolidated Statements of Stockholders’ Equity

(in thousands, except share amounts)

Common Stock · AdditionalPaid-In · Accumulated OtherComprehensive · Accumulated · TotalStockholders’
	Shares	Cost	Capital	Income (Loss)	Deficit	Equity
Balances as of December 31, 2024	109,381,556	$109	$1,003,685	$10	$(710,699)	$293,105
Exercise of stock options	43,113	—	62	—	—	62
Restricted stock vested in the period	289,735	—	—	—	—	—
Stock-based compensation	—	—	5,078	—	—	5,078
Other comprehensive loss	—	—	—	(101)	—	(101)
Net loss	—	—	—	—	(54,356)	(54,356)
Balances as of March 31, 2025	109,714,404	109	1,008,825	(91)	(765,055)	243,788
Issuance of common stock per Employee Stock Purchase Plan purchase	117,743	1	181	—	—	182
Stock-based compensation	—	—	4,205	—	—	4,205
Other comprehensive loss	—	—	—	(2)	—	(2)
Net loss	—	—	—	—	(49,156)	(49,156)
Balances as of June 30, 2025	109,832,147	110	1,013,211	(93)	(814,211)	199,017
Exercise of stock options	1,289	—	3	—	—	3
Restricted stock vested in the period	53,187	—	—	—	—	—
Issuance of common stock, net of issuance costs $697	5,235,959	5	13,487	—	—	13,492
Stock-based compensation	—	—	3,835	—	—	3,835
Other comprehensive income	—	—	—	17	—	17
Net loss	—	—	—	—	(54,922)	(54,922)
Balances as of September 30, 2025	115,122,582	$115	$1,030,536	$(76)	$(869,133)	$161,442

ContentsView on SEC.gov

The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.