John Gill

ALT

DIRECTOR · ALTIMMUNE, INC. · CIK 0001409939

FILING MIX · LIFETIME79%/21%

BUYS

SELLS

TOTAL VALUE

$183.0K

COMPANIES

ACTIVE SINCE

Jun 2020

HOLDINGS NOW

48,800

AVG SELL PX

$11.92

Trades · vs SPY

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Performance · forward returns vs SPY

3 backtested trades · 8 horizons · 6 pending

Forward-return performance of every backtestable P/S trade by John Gill, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.

HORIZON	TRADES	WIN RATE	INSIDER RETURN	SPY RETURN	MEAN EXCESS	MEDIAN EXCESS	T-STAT
7d	3	+0.00%	-2.51%	+1.98%	-4.48%	-7.13%	—
14d	3	+33.33%	+4.99%	+2.95%	+2.05%	-0.65%	—
30d	3	+66.67%	+8.27%	+4.90%	+3.37%	-10.79%	—
60d	3	+33.33%	+4.10%	+5.92%	-1.82%	+9.29%	—
90d	3(1 pending)	+0.00%	+10.09%	+1.66%	+8.43%	+8.43%	—
180d	3(1 pending)	+0.00%	-14.53%	+12.72%	-27.25%	-27.25%	—
1y	3(2 pending)	+100.00%	-14.23%	+27.60%	-41.83%	-41.83%	—
2y	3(2 pending)	+100.00%	-18.64%	+15.93%	-34.57%	-34.57%	—

How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.

Holdings over time

ALT · 48,800 shares · as of May 1, 2026

Trading cadence · quarterly flow

BUY ● SELL ●

2020

2021

2022

2023

2024

2025

2026

FLOW · 11 buys / 3 sellsCOVERAGE · 25 quarters

Form 4 filings · all activity

COMPANY	TYPE	SHARES	PRICE	VALUE	HELD AFTER	TRADE DATE	FILED	DETAILS
ALT ALTIMMUNE, INC.	PURCHASEGRANT Stock grant	48,800	—	—	48,800	May 1, 2026	May 1, 2026 ↗	View →
ALT ALTIMMUNE, INC.	PURCHASE	9,200	$3.41	$31.3K	21,700	Apr 6, 2026	Apr 6, 2026 ↗	View →
ALT ALTIMMUNE, INC.	PURCHASE	12,500	$4.10	$51.3K	12,500	Dec 23, 2025	Dec 23, 2025 ↗	View →
ALT ALTIMMUNE, INC.	PURCHASEGRANT Stock grant	48,800	—	—	48,800	Sep 25, 2025	Sep 29, 2025 ↗	View →
ALT ALTIMMUNE, INC.	PURCHASEGRANT Stock grant	34,900	—	—	34,900	Sep 26, 2024	Sep 30, 2024 ↗	View →
ALT ALTIMMUNE, INC.	PURCHASEGRANT Stock grant	26,100	—	—	26,100	Sep 28, 2023	Sep 29, 2023 ↗	View →
ALT ALTIMMUNE, INC.	PURCHASEGRANT Stock grant	23,500	—	—	23,500	Sep 29, 2022	Sep 30, 2022 ↗	View →
ALT ALTIMMUNE, INC.	SALEGRANT Gift	2,714	—	—	0	Jan 6, 2022	Sep 29, 2025 ↗	View →
ALT ALTIMMUNE, INC.	PURCHASEGRANT Stock grant	24,100	—	—	24,100	Sep 23, 2021	Sep 24, 2021 ↗	View →
ALT ALTIMMUNE, INC.	SALE	8,425	$11.92	$100.4K	11,199	Nov 30, 2020	Dec 2, 2020 ↗	View →
ALT ALTIMMUNE, INC.	SALE	16,850	—	—	0	Sep 24, 2020	Oct 16, 2020 ↗	View →
ALT ALTIMMUNE, INC.	PURCHASE	16,850	—	—	19,624	Sep 24, 2020	Oct 16, 2020 ↗	View →
ALT ALTIMMUNE, INC.	PURCHASEGRANT Stock grant	25,500	—	—	25,500	Sep 24, 2020	Sep 28, 2020 ↗	View →
ALT ALTIMMUNE, INC.	PURCHASEGRANT Stock grant	16,850	—	—	16,850	Jun 25, 2020	Jun 29, 2020 ↗	View →

Other insiders · ALT

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About this filer

CIK 0001409939

ROLE

Director

PRIMARY

ALT

COMPANIES

ACTIVE SINCE

Jun 2020

MARKETPEEL · /INSIDER/0001409939DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE

John Gill

The morning brief, before the bell.