Nantahala Capital Management’s Altimmune ALT Stock Holding History

Nantahala Capital Management’s Portfolio ALT Stock Details ALT Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$4.56M	Buy	+1,500,000	New	+$4.48M	0.15%	110
2017 Q1	–	Sell	-10,673	Closed	-$10.4M	–	56
2016 Q4	$10.4M	Hold	10,673	–	–	1.08%	28
2016 Q3	$9.29M	Sell	10,673 -167	-2%	-$131K	1.12%	26
2016 Q2	$7.93M	Buy	10,840 +1	+0%	+$684	0.86%	28
2016 Q1	$6.39M	Sell	10,839 -459	-4%	-$235K	0.66%	37
2015 Q4	$6.44M	Buy	11,298 +1,745	+18%	+$870K	0.84%	36
2015 Q3	$3.81M	Buy	9,553 +1,180	+14%	+$559K	0.52%	48
2015 Q2	$4.52M	Buy	8,373 +60	+0.7%	+$30.3K	0.66%	49
2015 Q1	$4.07M	Buy	8,313 +585	+8%	+$291K	0.68%	48
2014 Q4	$4.2M	Buy	7,728 +2,661	+53%	+$1.37M	0.59%	48
2014 Q3	$2.71M	Buy	+5,067	New	+$2.65M	0.33%	77

Other funds holding ALT

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

DTC

Deep Track Capital Greenwich, Connecticut $6.87B AUM 205.24% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

TCM

TCG Crossover Management Palo Alto, California $4.16B AUM 983.43% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Marshall Wace London, United Kingdom $127B AUM 46.06% 1-Year Est. Return

Viking Global Investors Stamford, Connecticut $35.1B AUM 21.36% 1-Year Est. Return

RCM

RA Capital Management Boston, Massachusetts $11.5B AUM 168.77% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Nantahala Capital Management's ALT Position: Q2 2026 in Review

Nantahala Capital Management opened a new position in Altimmune (ALT) in Q2 2026: 1,500,000 shares worth $4.56M. The stake represents 0.15% of the portfolio and ranks #110 among its holdings. This is a return to the name: Nantahala Capital Management previously reported a position in ALT as recently as Q4 2016.

Nantahala Capital Management first reported a position in ALT in Q3 2014 and has held it in 11 quarters since. The position peaked at $10.4M in Q4 2016. 210 funds tracked by Wall St. Rank hold ALT as of Q2 2026.

Nantahala Capital Management held 1,500,000 shares of Altimmune worth $4.56M as of Q2 2026.
Altimmune was a new Nantahala Capital Management position in Q2 2026.
Altimmune made up 0.15% of Nantahala Capital Management's portfolio in Q2 2026, its #110 holding.
Nantahala Capital Management first reported a position in Altimmune in Q3 2014 and has held it in 11 quarters since.
Nantahala Capital Management's Altimmune position peaked at $10.4M in Q4 2016.
210 funds tracked by Wall St. Rank held Altimmune as of Q2 2026.

Based on Nantahala Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.